September 2020 - LKP - Ml01.01.Org

[sched/hotplug] c59ee15948: kernel_BUG_at_kernel/sched/core.c

by kernel test robot

Greeting, FYI, we noticed the following commit (built with gcc-9): commit: c59ee15948b8de2828d9175a4b58e2b8ce1c9131 ("sched/hotplug: Consolidate task migration on CPU unplug") https://git.kernel.org/cgit/linux/kernel/git/tglx/devel.git highmem in testcase: locktorture version: with following parameters: runtime: 300s test: cpuhotplug test-description: This torture test consists of creating a number of kernel threads which acquire the lock and hold it for specific amount of time, thus simulating different critical region behaviors. test-url: https://www.kernel.org/doc/Documentation/locking/locktorture.txt on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +------------------------------------------+------------+------------+ | | 98f6f9834e | c59ee15948 | +------------------------------------------+------------+------------+ | boot_successes | 6 | 2 | | boot_failures | 0 | 5 | | kernel_BUG_at_kernel/sched/core.c | 0 | 5 | | invalid_opcode:#[##] | 0 | 5 | | RIP:sched_cpu_dying | 0 | 5 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 5 | +------------------------------------------+------------+------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot <lkp(a)intel.com> [ 310.168118] kernel BUG at kernel/sched/core.c:7081! [ 310.168945] invalid opcode: 0000 [#1] SMP PTI [ 310.169679] CPU: 0 PID: 11 Comm: migration/0 Not tainted 5.9.0-rc6-00005-gc59ee15948b8d #1 [ 310.170965] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 310.172371] Stopper: multi_cpu_stop+0x0/0x120 <- 0x0 [ 310.173247] RIP: 0010:sched_cpu_dying+0x153/0x160 [ 310.173920] Code: 5d 5d c3 80 3d 16 8f 75 01 00 0f 85 0c ff ff ff 48 c7 c7 b3 07 35 82 c6 05 02 8f 75 01 01 e8 56 20 fc ff 0f 0b e9 f2 fe ff ff <0f> 0b 0f 0b 0f 0b eb 86 0f 1f 44 00 00 66 66 66 66 90 55 48 89 e5 [ 310.189289] RSP: 0018:ffffc90000063db0 EFLAGS: 00010002 [ 310.190174] RAX: ffff88822a504860 RBX: ffff88823fc2c100 RCX: 0000000000000000 [ 310.191351] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88823fc2c180 [ 310.192513] RBP: ffffc90000063dc8 R08: 0000000000000000 R09: ffff88822a504bb0 [ 310.193731] R10: 0000000000000006 R11: 0000000000000000 R12: 0000000000000000 [ 310.194919] R13: 0000000000000086 R14: ffffffff810db6e0 R15: 0000000000000003 [ 310.196109] FS: 0000000000000000(0000) GS:ffff88823fc00000(0000) knlGS:0000000000000000 [ 310.197477] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 310.198422] CR2: 00000000080a2190 CR3: 000000000260a000 CR4: 00000000000006f0 [ 310.199607] Call Trace: [ 310.200089] cpuhp_invoke_callback+0x8d/0x5c0 [ 310.212974] ? native_apic_msr_write+0x27/0x40 [ 310.213855] take_cpu_down+0x60/0xa0 [ 310.214483] multi_cpu_stop+0x6d/0x120 [ 310.215089] ? stop_machine_yield+0x20/0x20 [ 310.215819] cpu_stopper_thread+0x59/0x140 [ 310.216558] ? smpboot_thread_fn+0x26/0x1e0 [ 310.217312] smpboot_thread_fn+0x10b/0x1e0 [ 310.218028] ? sort_range+0x20/0x20 [ 310.218629] kthread+0x116/0x160 [ 310.219202] ? kthread_park+0xa0/0xa0 [ 310.219843] ret_from_fork+0x22/0x30 [ 310.220473] Modules linked in: locktorture(-) torture sr_mod cdrom ata_generic pata_acpi ppdev parport_pc parport floppy ata_piix libata i2c_piix4 [ 310.222706] ---[ end trace ae2e7e9fc379c741 ]--- To reproduce: # build kernel cd linux cp config-5.9.0-rc6-00005-gc59ee15948b8d .config make HOSTCC=gcc-9 CC=gcc-9 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules make HOSTCC=gcc-9 CC=gcc-9 ARCH=x86_64 INSTALL_MOD_PATH=<mod-install-dir> modules_install cd <mod-install-dir> find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email Thanks, lkp

1 year, 10 months

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[mm/lru] 28e332d5c5: kernel_BUG_at_mm/swap.c

by kernel test robot

Greeting, FYI, we noticed the following commit (built with gcc-9): commit: 28e332d5c5943b86b08af15abd745708b2af44c9 ("mm/lru: replace pgdat lru_lock with lruvec lock") https://github.com/alexshi/linux.git lruv19.6 in testcase: boot on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +------------------------------------------+------------+------------+ | | ec6f8eee56 | 28e332d5c5 | +------------------------------------------+------------+------------+ | boot_successes | 8 | 0 | | boot_failures | 0 | 9 | | kernel_BUG_at_mm/swap.c | 0 | 9 | | invalid_opcode:#[##] | 0 | 9 | | RIP:__page_cache_release | 0 | 9 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 9 | +------------------------------------------+------------+------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot <lkp(a)intel.com> [ 4.101691] kernel BUG at mm/swap.c:87! [ 4.102693] invalid opcode: 0000 [#1] SMP PTI [ 4.103509] CPU: 1 PID: 442 Comm: khugepaged Not tainted 5.9.0-rc6-00018-g28e332d5c5943 #1 [ 4.104825] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 4.106188] RIP: 0010:__page_cache_release+0x6f/0x155 [ 4.107055] Code: e6 48 89 ef e8 2a 3a 06 00 48 89 ef 49 89 c5 e8 f5 f4 ff ff 48 8b 00 a8 10 75 11 48 c7 c6 9b b7 2b 82 48 89 ef e8 fe ee 01 00 <0f> 0b 48 89 ef e8 d5 f4 ff ff 48 89 ef 48 8b 00 0f ba e0 14 73 12 [ 4.116822] RSP: 0018:ffffc90000bd7c40 EFLAGS: 00010082 [ 4.117876] RAX: 0000000000000000 RBX: ffff8882235c4020 RCX: 0000000000000000 [ 4.118989] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffffffff82c8370c [ 4.120139] RBP: ffffea0008625180 R08: 0000000000000000 R09: ffffffff82c8574f [ 4.121244] R10: 0000000000000000 R11: ffffc90000bd79ad R12: 0000000000800000 [ 4.122316] R13: ffff88822a585000 R14: ffffea0008645b28 R15: ffff88821916c060 [ 4.123488] FS: 0000000000000000(0000) GS:ffff88823fd00000(0000) knlGS:0000000000000000 [ 4.124867] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4.125788] CR2: 0000564112a7e8b8 CR3: 000000021915a000 CR4: 00000000000406e0 [ 4.126883] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 4.128004] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 4.129305] Call Trace: [ 4.129859] __put_page+0x6f/0x82 [ 4.130493] collapse_huge_page+0x4a8/0x6ea [ 4.131203] khugepaged_scan_pmd+0x332/0x3d8 [ 4.131979] khugepaged_scan_mm_slot+0x4dc/0x592 [ 4.132760] khugepaged+0x18e/0x394 [ 4.133396] ? prepare_to_wait_exclusive+0x89/0x89 [ 4.134224] ? khugepaged_scan_mm_slot+0x592/0x592 [ 4.135032] kthread+0x107/0x10f [ 4.135631] ? kthread_flush_worker+0x75/0x75 [ 4.136364] ret_from_fork+0x22/0x30 [ 4.137047] Modules linked in: [ 4.137621] ---[ end trace 5757c96c397e7d37 ]--- To reproduce: # build kernel cd linux cp config-5.9.0-rc6-00018-g28e332d5c5943 .config make HOSTCC=gcc-9 CC=gcc-9 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email Thanks, lkp

1 year, 10 months

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[sched] 25d95d0623: BUG:assuming_atomic_context_at_include/linux/filter.h

by kernel test robot

Greeting, FYI, we noticed the following commit (built with gcc-9): commit: 25d95d0623751d029c3177527d44563040ae828b ("sched: Make migrate_disable/enable() independent of RT") https://git.kernel.org/cgit/linux/kernel/git/tglx/devel.git highmem in testcase: boot on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +-------------------------------------------------------+------------+------------+ | | c321556668 | 25d95d0623 | +-------------------------------------------------------+------------+------------+ | boot_successes | 4 | 0 | | boot_failures | 0 | 4 | | BUG:assuming_atomic_context_at_include/linux/filter.h | 0 | 4 | +-------------------------------------------------------+------------+------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot <lkp(a)intel.com> [ 9.819373] BUG: assuming atomic context at include/linux/filter.h:597 [ 9.820843] in_atomic(): 0, irqs_disabled(): 0, pid: 156, name: (journald) [ 9.822369] CPU: 1 PID: 156 Comm: (journald) Not tainted 5.9.0-rc6-00010-g25d95d0623751 #1 [ 9.824286] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 9.826275] Call Trace: [ 9.826998] dump_stack+0x57/0x80 [ 9.827909] __cant_sleep.cold+0x68/0x75 [ 9.828932] __seccomp_filter+0x7e/0x680 [ 9.829876] syscall_trace_enter+0x83/0x1e0 [ 9.830892] do_syscall_64+0xf/0x40 [ 9.831719] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 9.832868] RIP: 0033:0x7fc1402c6f59 [ 9.833730] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 07 6f 0c 00 f7 d8 64 89 01 48 [ 9.837478] RSP: 002b:00007ffd5ecb9488 EFLAGS: 00000246 ORIG_RAX: 000000000000013d [ 9.839240] RAX: ffffffffffffffda RBX: 0000561bf42ee750 RCX: 00007fc1402c6f59 [ 9.840827] RDX: 0000561bf42ee750 RSI: 0000000000000000 RDI: 0000000000000001 [ 9.842247] RBP: 0000561bf434d700 R08: 0000561bf42f5970 R09: 00000000c000003e [ 9.843799] R10: 0000561bf42f59d0 R11: 0000000000000246 R12: 00007ffd5ecb94e0 [ 9.845242] R13: 00007ffd5ecb94d8 R14: 00007fc1400f7818 R15: 000000000000002c [ OK ] Started Load Kernel Modules. Mounting Kernel Configuration File System... Starting Apply Kernel Variables... [ OK ] Started Apply Kernel Variables. [ OK ] Mounted Kernel Configuration File System. [ OK ] Started Remount Root and Kernel File Systems. Starting Create System Users... Starting Load/Save Random Seed... [ OK ] Started Create System Users. Starting Create Static Device Nodes in /dev... [ OK ] Started Load/Save Random Seed. [ OK ] Started Create Static Device Nodes in /dev. Starting udev Kernel Device Manager... [ OK ] Reached target Local File Systems (Pre). [ OK ] Reached target Local File Systems. Starting Preprocess NFS configuration... [ OK ] Started udev Kernel Device Manager. [ OK ] Started Preprocess NFS configuration. [ OK ] Reached target NFS client services. [ OK ] Started Journal Service. Starting Flush Journal to Persistent Storage... [ OK ] Started udev Coldplug all Devices. Starting Helper to synchronize boot up for ifupdown... [ OK ] Started Flush Journal to Persistent Storage. [ OK ] Started Helper to synchronize boot up for ifupdown. Starting Raise network interfaces... Starting Create Volatile Files and Directories... [ OK ] Started Raise network interfaces. [ OK ] Reached target Network. [ OK ] Started Create Volatile Files and Directories. Starting Update UTMP about System Boot/Shutdown... Starting Network Time Synchronization... Starting RPC bind portmap service... [ OK ] Started RPC bind portmap service. [ OK ] Started Update UTMP about System Boot/Shutdown. [ OK ] Reached target Remote File Systems (Pre). [ OK ] Reached target Remote File Systems. [ OK ] Reached target RPC Port Mapper. [ 10.337714] piix4_smbus 0000:00:01.3: SMBus Host Controller at 0x700, revision 0 [ 10.450838] libata version 3.00 loaded. [ OK ] Started Network Time Synchronization. [ OK ] Reached target System Initialization. [ OK ] Listening on D-Bus System Message Bus Socket. [ OK ] Reached target Sockets. [ OK ] Reached target Basic System. Starting LKP bootstrap... Starting Permit User Sessions... [ OK ] Started D-Bus System Message Bus. Starting System Logging Service... Starting Login Service... [ 10.531472] parport_pc 00:04: reported by Plug and Play ACPI Starting /etc/rc.local Compatibility... [ 10.537909] parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE] Starting OpenBSD Secure Shell server... [ OK ] Started Regular background program processing daemon. Starting LSB: OpenIPMI Driver init script... [ OK ] Started Daily Cleanup of Temporary Directories. [ OK ] Reached target System Time Synchronized. [ OK ] Started Daily rotation of log files. [ OK ] Started Daily apt download activities. [ OK ] Started Daily apt upgrade and clean activities. [ OK ] Reached target Timers. [ OK ] Started System Logging Service. [ OK ] Started LKP bootstrap. [ OK ] Started Permit User Sessions. [ 10.757740] ata_piix 0000:00:01.1: version 2.13 [ 10.820897] BUG: assuming atomic context at include/linux/filter.h:597 [ 10.824958] in_atomic(): 0, irqs_disabled(): 0, pid: 189, name: systemd-udevd [ 10.826545] CPU: 0 PID: 189 Comm: systemd-udevd Tainted: G W 5.9.0-rc6-00010-g25d95d0623751 #1 [ 10.828636] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 10.830631] Call Trace: [ 10.831348] dump_stack+0x57/0x80 [ 10.832253] __cant_sleep.cold+0x68/0x75 [ 10.833228] __seccomp_filter+0x7e/0x680 [ 10.834143] ? __switch_to_asm+0x42/0x70 [ 10.835154] syscall_trace_enter+0x83/0x1e0 [ 10.836505] do_syscall_64+0xf/0x40 [ 10.837349] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 10.838368] RIP: 0033:0x7f31b4f36fd7 [ 10.839137] Code: 48 83 ec 80 5b 5d 41 5c c3 66 2e 0f 1f 84 00 00 00 00 00 b8 ff ff ff ff eb d6 e8 e4 07 02 00 0f 1f 40 00 b8 5f 00 00 00 0f 05 <c3> 0f 1f 84 00 00 00 00 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff [ 10.842410] RSP: 002b:00007fff9f8539f8 EFLAGS: 00000206 ORIG_RAX: 000000000000005f [ 10.843757] RAX: ffffffffffffffda RBX: 0000559f0874b960 RCX: 00007f31b4f36fd7 [ 10.845012] RDX: 00000000000800c2 RSI: 0000559f0874b960 RDI: 0000000000000012 [ 10.846208] RBP: 00007fff9f853a80 R08: 0000000000000016 R09: 0000559f0874b97c [ 10.847426] R10: 0000000000000180 R11: 0000000000000206 R12: 00007fff9f853a78 [ 10.848608] R13: 00007fff9f853a4f R14: 0000000000000012 R15: 0000000000000006 Starting LSB: Load kernel image with kexec... [ OK ] Started LSB: Load kernel image with kexec. [ 10.893602] scsi host0: ata_piix [ 10.896952] IPMI message handler: version 39.2 [ 10.905583] ipmi device interface [ OK ] Started Login Service. LKP: HOSTNAME vm-snb-11, MAC 52:54:00:12:34:56, kernel 5.9.0-rc6-00010-g25d95d0623751 1, serial console /dev/ttyS0 [ 10.920625] scsi host1: ata_piix [ 10.921689] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc040 irq 14 [ 10.923123] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc048 irq 15 [ 10.985404] ipmi_si: IPMI System Interface driver [ 10.986829] ipmi_si: Unable to find any System Interface(s) [FAILED] Failed to start LSB: OpenIPMI Driver init script. See 'systemctl status openipmi.service' for details. [ 11.090976] ata2.01: NODEV after polling detection [ 11.096434] ata2.00: ATAPI: QEMU DVD-ROM, 2.5+, max UDMA/100 [ 11.099079] scsi 1:0:0:0: CD-ROM QEMU QEMU DVD-ROM 2.5+ PQ: 0 ANSI: 5 [ 11.120492] ppdev: user-space parallel port driver [ 11.193498] scsi 1:0:0:0: Attached scsi generic sg0 type 5 [ 11.261908] sr 1:0:0:0: [sr0] scsi3-mmc drive: 4x/4x cd/rw xa/form2 tray [ 11.263319] cdrom: Uniform CD-ROM driver Revision: 3.20 [ 11.273346] sr 1:0:0:0: Attached scsi CD-ROM sr0 [ 11.291046] bochs-drm 0000:00:02.0: vgaarb: deactivate vga console [ 11.302594] Console: switching to colour dummy device 80x25 [ 11.304468] [drm] Found bochs VGA, ID 0xb0c0. [ 11.305151] [drm] Framebuffer size 16384 kB @ 0xfd000000, mmio @ 0xfebf0000. [ 11.309645] [TTM] Zone kernel: Available graphics memory: 4074508 KiB [ 11.310875] [TTM] Zone dma32: Available graphics memory: 2097152 KiB [ 11.311998] [TTM] Initializing pool allocator [ 11.313245] [TTM] Initializing DMA pool allocator [ 11.314735] [drm] Initialized bochs-drm 1.0.0 20130925 for 0000:00:02.0 on minor 0 [ 11.319970] fbcon: bochs-drmdrmfb (fb0) is primary device [ 11.336008] Console: switching to colour frame buffer device 128x48 [ 11.345721] bochs-drm 0000:00:02.0: [drm] fb0: bochs-drmdrmfb frame buffer device [ 12.108197] BUG: assuming atomic context at include/linux/filter.h:597 [ 12.112588] in_atomic(): 0, irqs_disabled(): 0, pid: 223, name: systemd-logind [ 12.113809] CPU: 0 PID: 223 Comm: systemd-logind Tainted: G W 5.9.0-rc6-00010-g25d95d0623751 #1 [ 12.113810] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 12.113811] Call Trace: [ 12.113822] dump_stack+0x57/0x80 [ 12.117718] __seccomp_filter+0x7e/0x680 [ 12.118367] ? ep_poll+0x1e9/0x4e0 [ 12.118958] syscall_trace_enter+0x83/0x1e0 [ 12.119783] do_syscall_64+0xf/0x40 [ 12.120371] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 12.121214] RIP: 0033:0x7fc0b76567b4 [ 12.121807] Code: 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b1 0f 1f 80 00 00 00 00 48 8d 05 49 5f 0c 00 8b 00 85 c0 75 13 b8 2f 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 41 54 41 89 d4 55 48 89 f5 53 [ 12.126243] RSP: 002b:00007ffe31fc6ca8 EFLAGS: 00000246 ORIG_RAX: 000000000000002f [ 12.127517] RAX: ffffffffffffffda RBX: 000055a169cb2e30 RCX: 00007fc0b76567b4 [ 12.128510] RDX: 0000000040000040 RSI: 00007ffe31fc6ce0 RDI: 000000000000000e [ 12.129450] RBP: 00007ffe31fc6cd0 R08: 0000000000b69f94 R09: 000000000000000b [ 12.130617] R10: 00007ffe31fec000 R11: 0000000000000246 R12: 00007ffe31fc6cc8 [ 12.131809] R13: 000055a169cb2e30 R14: 0000000000000000 R15: 0000000000000000 9mPreprocess NFS configuration... [ OK ] Reached target Host and Network Name Lookups. [ OK ] Started Preprocess NFS configuration. Starting NFS status monitor for NFSv2/3 locking.... Starting Notify NFS peers of a restart... [ OK ] Started Notify NFS peers of a restart. [ OK ] Started NFS status monitor for NFSv2/3 locking.. [ 12.284556] random: crng init done [ 12.286119] random: 7 urandom warning(s) missed due to ratelimiting [ OK ] Started OpenBSD Secure Shell server. [ 15.538606] BUG: assuming atomic context at include/linux/filter.h:597 [ 15.541153] in_atomic(): 0, irqs_disabled(): 0, pid: 165, name: systemd-udevd [ 15.543729] CPU: 0 PID: 165 Comm: systemd-udevd Tainted: G W 5.9.0-rc6-00010-g25d95d0623751 #1 [ 15.546685] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 15.549225] Call Trace: [ 15.550836] dump_stack+0x57/0x80 [ 15.552645] __cant_sleep.cold+0x68/0x75 [ 15.554421] __seccomp_filter+0x7e/0x680 [ 15.556343] ? ep_poll+0x1e9/0x4e0 [ 15.558116] syscall_trace_enter+0x83/0x1e0 [ 15.560069] do_syscall_64+0xf/0x40 [ 15.561873] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 15.568005] RIP: 0033:0x7f31b4f37461 [ 15.569862] Code: fe ff ff 50 48 8d 3d fe d0 09 00 e8 e9 03 02 00 66 0f 1f 84 00 00 00 00 00 48 8d 05 99 62 0d 00 8b 00 85 c0 75 13 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 57 c3 66 0f 1f 44 00 00 41 54 49 89 d4 55 48 [ 15.575428] RSP: 002b:00007fff9f853e68 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 15.577996] RAX: ffffffffffffffda RBX: 0000559f08744db8 RCX: 00007f31b4f37461 [ 15.580609] RDX: 0000000000000008 RSI: 00007fff9f853e70 RDI: 000000000000000d [ 15.582964] RBP: 00007fff9f854000 R08: 0000000000eaf7a2 R09: 000000000000000f [ 15.585537] R10: 00007fff9f9a1000 R11: 0000000000000246 R12: 00007fff9f853e90 [ 15.587966] R13: 0000559f08744da0 R14: 0000000000000001 R15: 00007fff9f853e9c [ 20.538604] BUG: assuming atomic context at include/linux/filter.h:597 [ 20.541188] in_atomic(): 0, irqs_disabled(): 0, pid: 209, name: systemd-timesyn [ 20.543554] CPU: 0 PID: 209 Comm: systemd-timesyn Tainted: G W 5.9.0-rc6-00010-g25d95d0623751 #1 [ 20.546364] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 20.548822] Call Trace: [ 20.550416] dump_stack+0x57/0x80 [ 20.552250] __cant_sleep.cold+0x68/0x75 [ 20.554054] __seccomp_filter+0x7e/0x680 [ 20.555920] ? ep_poll+0x1e9/0x4e0 [ 20.557705] syscall_trace_enter+0x83/0x1e0 [ 20.559641] do_syscall_64+0xf/0x40 [ 20.561222] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 20.563248] RIP: 0033:0x7fe472a8f494 [ 20.573230] Code: 66 0f 1f 44 00 00 41 54 49 89 d4 55 48 89 f5 53 89 fb 48 83 ec 10 e8 cb c2 01 00 4c 89 e2 48 89 ee 89 df 41 89 c0 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 38 44 89 c7 48 89 44 24 08 e8 07 c3 01 00 48 [ 20.578771] RSP: 002b:00007fff46f52e10 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 20.581396] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00007fe472a8f494 [ 20.583703] RDX: 0000000000000008 RSI: 00007fff46f52e40 RDI: 0000000000000010 [ 20.585996] RBP: 00007fff46f52e40 R08: 0000000000000000 R09: 0000000000000014 [ 20.588598] R10: 00007fff46f6a000 R11: 0000000000000246 R12: 0000000000000008 [ 20.590957] R13: 0000000000000001 R14: 00007fff46f52e6c R15: 00007fff46f52e60 [ 23.728449] sysrq: Emergency Sync [ 23.731860] BUG: assuming atomic context at include/linux/filter.h:597 [ 23.732416] Emergency Sync complete [ 23.734323] in_atomic(): 0, irqs_disabled(): 0, pid: 156, name: systemd-journal [ 23.736313] sysrq: Resetting [ Kboot worker: lkp-worker47 Elapsed time: 60 kvm=( qemu-system-x86_64 -enable-kvm -cpu SandyBridge -kernel $kernel -initrd initrd-vm-snb-11.cgz -m 8192 -smp 2 -device e1000,netdev=net0 -netdev user,id=net0,hostfwd=tcp::32032-:22 -boot order=nc -no-reboot -watchdog i6300esb -watchdog-action debug -rtc base=localtime -serial stdio -display none -monitor null ) append=( ip=::::vm-snb-11::dhcp root=/dev/ram0 user=lkp job=/job-script ARCH=x86_64 kconfig=x86_64-rhel-8.3 branch=tglx-devel/highmem commit=25d95d0623751d029c3177527d44563040ae828b BOOT_IMAGE=/pkg/linux/x86_64-rhel-8.3/gcc-9/25d95d0623751d029c3177527d44563040ae828b/vmlinuz-5.9.0-rc6-00010-g25d95d0623751 max_uptime=600 RESULT_ROOT=/result/boot/1/vm-snb/debian-10.4-x86_64-20200603.cgz/x86_64-rhel-8.3/gcc-9/25d95d0623751d029c3177527d44563040ae828b/3 result_service=tmpfs selinux=0 debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 net.ifnames=0 printk.devkmsg=on panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 drbd.minor_count=8 systemd.log_level=err ignore_loglevel console=tty0 earlyprintk=ttyS0,115200 console=ttyS0,115200 vga=normal rw rcuperf.shutdown=0 watchdog_thresh=60 ) "${kvm[@]}" -append "${append[*]}" To reproduce: # build kernel cd linux cp config-5.9.0-rc6-00010-g25d95d0623751 .config make HOSTCC=gcc-9 CC=gcc-9 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email Thanks, lkp

1 year, 10 months

1
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[x86/msi] 3b9c1d377d: BUG:kernel_NULL_pointer_dereference,address

by kernel test robot

Greeting, FYI, we noticed the following commit (built with gcc-9): commit: 3b9c1d377d67072d1d8a2373b4969103cca00dab ("x86/msi: Consolidate MSI allocation") https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git x86/irq in testcase: boot on test machine: 8 threads Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz with 16G memory caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): If you fix the issue, kindly add following tag Reported-by: kernel test robot <rong.a.chen(a)intel.com> [ 6.377874] BUG: kernel NULL pointer dereference, address: 0000000000000018 [ 6.378864] #PF: supervisor read access in kernel mode [ 6.378864] #PF: error_code(0x0000) - not-present page [ 6.378864] PGD 0 P4D 0 [ 6.378864] Oops: 0000 [#1] SMP PTI [ 6.378864] CPU: 3 PID: 1 Comm: swapper/0 Tainted: G I 5.9.0-rc5-00018-g3b9c1d377d670 #1 [ 6.378864] Hardware name: Dell Inc. OptiPlex 7040/0Y7WYT, BIOS 1.2.8 01/26/2016 [ 6.378864] RIP: 0010:msi_desc_to_pci_dev+0x5/0x20 [ 6.378864] Code: cc cc cc cc cc 0f 1f 44 00 00 8b 05 35 cc 12 01 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 <48> 8b 47 18 48 2d b0 00 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 [ 6.378864] RSP: 0000:ffffc9000002bad8 EFLAGS: 00010297 [ 6.378864] RAX: 0000000000000000 RBX: ffff88845956a000 RCX: 0000000000000000 [ 6.378864] RDX: ffffc9000002bae8 RSI: 0000000000000000 RDI: 0000000000000000 [ 6.378864] RBP: ffff888459a98c00 R08: ffff88845956a2e0 R09: 0000000000000000 [ 6.378864] R10: 0000000000000008 R11: 0000000000000000 R12: 0000000000000001 [ 6.378864] R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000000 [ 6.378864] FS: 0000000000000000(0000) GS:ffff888459cc0000(0000) knlGS:0000000000000000 [ 6.378864] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6.378864] CR2: 0000000000000018 CR3: 000000045860a001 CR4: 00000000003706e0 [ 6.378864] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 6.378864] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 6.378864] Call Trace: [ 6.378864] intel_get_irq_domain+0x24/0xc0 [ 6.378864] native_setup_msi_irqs+0x3b/0xa0 [ 6.378864] __pci_enable_msi_range+0x187/0x2c0 [ 6.378864] pci_alloc_irq_vectors_affinity+0xbf/0x100 [ 6.378864] pcie_port_device_register+0x138/0x560 [ 6.378864] ? _cond_resched+0x19/0x40 [ 6.378864] pcie_portdrv_probe+0x2d/0xc0 [ 6.378864] local_pci_probe+0x42/0x80 [ 6.378864] ? _cond_resched+0x19/0x40 [ 6.378864] pci_device_probe+0x107/0x1c0 [ 6.378864] really_probe+0x1ca/0x420 [ 6.378864] driver_probe_device+0xe1/0x160 [ 6.378864] device_driver_attach+0x53/0x60 [ 6.378864] __driver_attach+0x8a/0x160 [ 6.378864] ? device_driver_attach+0x60/0x60 [ 6.378864] ? device_driver_attach+0x60/0x60 [ 6.378864] bus_for_each_dev+0x78/0xc0 [ 6.378864] bus_add_driver+0x14d/0x200 [ 6.378864] driver_register+0x6c/0xc0 [ 6.378864] ? dmi_pcie_pme_disable_msi+0x1f/0x1f [ 6.378864] do_one_initcall+0x46/0x204 [ 6.378864] kernel_init_freeable+0x1da/0x23c [ 6.378864] ? rest_init+0xc6/0xc6 [ 6.378864] kernel_init+0xa/0x11a [ 6.378864] ret_from_fork+0x22/0x30 [ 6.378864] Modules linked in: [ 6.378864] CR2: 0000000000000018 [ 6.378864] ---[ end trace 33aa934cfab777f0 ]--- To reproduce: # build kernel cd linux cp config-5.9.0-rc5-00018-g3b9c1d377d670 .config make HOSTCC=gcc-9 CC=gcc-9 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email Thanks, Rong Chen

1 year, 10 months

1
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0 / 0

[mm/lru] 44c86dfabf: fio.read_iops -11.8% regression

by kernel test robot

Greeting, FYI, we noticed a -11.8% regression of fio.read_iops due to commit: commit: 44c86dfabfbbb310b5135c0e8b66b193b9d7e896 ("mm/lru: replace pgdat lru_lock with lruvec lock") https://github.com/alexshi/linux.git lruv19.5 in testcase: fio-basic on test machine: 96 threads Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 256G memory with following parameters: disk: 2pmem fs: btrfs runtime: 200s nr_task: 50% time_based: tb rw: read bs: 2M ioengine: sync test_size: 100G cpufreq_governor: performance ucode: 0x5002f01 test-description: Fio is a tool that will spawn a number of threads or processes doing a particular type of I/O action as specified by the user. test-url: https://github.com/axboe/fio In addition to that, the commit also has significant impact on the following tests: +------------------+----------------------------------------------------------------+ | testcase: change | will-it-scale: will-it-scale.per_process_ops -11.1% regression | | test machine | 104 threads Skylake with 192G memory | | test parameters | cpufreq_governor=performance | | | mode=process | | | nr_task=100% | | | test=page_fault2 | | | ucode=0x2006906 | +------------------+----------------------------------------------------------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot <rong.a.chen(a)intel.com> Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml ========================================================================================= bs/compiler/cpufreq_governor/disk/fs/ioengine/kconfig/nr_task/rootfs/runtime/rw/tbox_group/test_size/testcase/time_based/ucode: 2M/gcc-9/performance/2pmem/btrfs/sync/x86_64-rhel-8.3/50%/debian-10.4-x86_64-20200603.cgz/200s/read/lkp-csl-2sp6/100G/fio-basic/tb/0x5002f01 commit: 0c5e8d9feb ("mm/mlock: remove __munlock_isolate_lru_page") 44c86dfabf ("mm/lru: replace pgdat lru_lock with lruvec lock") 0c5e8d9febd9f026 44c86dfabfbbb310b5135c0e8b6 ---------------- --------------------------- %stddev %change %stddev \ | \ 10.99 ± 3% -1.0 10.00 fio.latency_1000us% 0.94 ± 3% +0.3 1.26 ± 10% fio.latency_100ms% 7.42 -2.9 4.51 ± 2% fio.latency_10ms% 10.09 +0.9 11.01 fio.latency_20ms% 24.65 -2.0 22.69 fio.latency_2ms% 4.20 ± 8% -0.9 3.29 ± 3% fio.latency_4ms% 17.35 ± 3% +5.6 22.96 fio.latency_500us% 6.55 +1.6 8.12 fio.latency_50ms% 17.80 -1.7 16.14 fio.latency_750us% 15477 -11.8% 13658 fio.read_bw_MBps 15597568 +22.3% 19070976 fio.read_clat_90%_us 33161216 ± 2% +7.1% 35520512 fio.read_clat_95%_us 49545216 +4.8% 51904512 fio.read_clat_99%_us 5548318 +9.8% 6093570 fio.read_clat_mean_us 10774701 +7.7% 11604571 fio.read_clat_stddev 7738 -11.8% 6829 fio.read_iops 6.35e+09 -11.7% 5.604e+09 fio.time.file_system_inputs 264480 -12.5% 231508 fio.time.involuntary_context_switches 18.04 -10.7% 16.11 fio.time.user_time 1548992 -11.7% 1367144 fio.workload 7.31 ± 10% +13.9% 8.32 ± 6% sched_debug.cpu.nr_uninterruptible.stddev 37.03 +6.0% 39.25 iostat.cpu.idle 62.85 -3.5% 60.64 iostat.cpu.system 1.09 -0.1 0.96 mpstat.cpu.all.irq% 0.11 ± 2% -0.0 0.08 mpstat.cpu.all.soft% 2121 ± 10% +14.9% 2436 ± 6% slabinfo.kmalloc-rcl-96.active_objs 2121 ± 10% +14.9% 2436 ± 6% slabinfo.kmalloc-rcl-96.num_objs 3.314e+08 ± 3% -11.4% 2.937e+08 ± 2% numa-numastat.node0.local_node 3.314e+08 ± 3% -11.4% 2.938e+08 ± 2% numa-numastat.node0.numa_hit 3.425e+08 ± 4% -9.5% 3.1e+08 numa-numastat.node1.local_node 3.425e+08 ± 4% -9.5% 3.1e+08 numa-numastat.node1.numa_hit 36.25 +6.9% 38.75 vmstat.cpu.id 62.25 -3.6% 60.00 vmstat.cpu.sy 15563182 -11.8% 13719448 vmstat.io.bi 32059 ± 6% -16.0% 26929 vmstat.system.cs 168.00 ± 4% -36.3% 107.00 ± 11% numa-vmstat.node0.nr_isolated_file 1.781e+08 ± 6% -14.2% 1.528e+08 ± 8% numa-vmstat.node0.numa_hit 1.78e+08 ± 6% -14.2% 1.527e+08 ± 8% numa-vmstat.node0.numa_local 20557 ± 3% -15.4% 17389 ± 6% numa-vmstat.node0.workingset_nodes 155.00 ± 6% -30.3% 108.00 ± 8% numa-vmstat.node1.nr_isolated_file 8686 ± 11% -11.4% 7691 softirqs.CPU23.RCU 12327 ± 17% +29.9% 16011 ± 8% softirqs.CPU23.SCHED 8707 ± 4% +77.0% 15413 ± 44% softirqs.CPU26.RCU 15704 ± 5% -24.2% 11902 ± 8% softirqs.CPU34.SCHED 15612 ± 5% -19.8% 12523 ± 11% softirqs.CPU46.SCHED 19364 ± 7% -11.7% 17107 ± 6% softirqs.CPU74.SCHED 18491 ± 8% -10.2% 16597 ± 8% softirqs.CPU80.SCHED 9169 ± 24% -25.5% 6833 ± 4% softirqs.CPU82.RCU 16991 ± 7% -19.4% 13690 ± 11% softirqs.CPU9.SCHED 100144 ± 2% -15.2% 84953 proc-vmstat.allocstall_movable 5335 ± 19% -46.5% 2855 ± 19% proc-vmstat.allocstall_normal 1127 ± 5% +18.3% 1333 ± 10% proc-vmstat.compact_daemon_wake 663260 ± 29% +60.5% 1064753 ± 6% proc-vmstat.compact_isolated 2941 ± 4% +11.4% 3276 proc-vmstat.kswapd_low_wmark_hit_quickly 324.75 -33.3% 216.50 ± 2% proc-vmstat.nr_isolated_file 1.201e+08 ± 3% -18.6% 97790056 ± 5% proc-vmstat.numa_foreign 6.726e+08 -10.4% 6.025e+08 proc-vmstat.numa_hit 6.726e+08 -10.4% 6.025e+08 proc-vmstat.numa_local 1.201e+08 ± 3% -18.6% 97790056 ± 5% proc-vmstat.numa_miss 1.201e+08 ± 3% -18.6% 97821690 ± 5% proc-vmstat.numa_other 3009 ± 4% +15.6% 3478 proc-vmstat.pageoutrun 28720822 -12.6% 25115422 ± 2% proc-vmstat.pgalloc_dma32 7.667e+08 -11.7% 6.772e+08 proc-vmstat.pgalloc_normal 7.856e+08 -11.8% 6.929e+08 proc-vmstat.pgfree 341910 ± 28% +60.0% 546934 ± 7% proc-vmstat.pgmigrate_success 3.173e+09 -11.7% 2.8e+09 proc-vmstat.pgpgin 2.665e+08 -16.8% 2.217e+08 proc-vmstat.pgscan_direct 3.527e+08 -15.5% 2.98e+08 proc-vmstat.pgscan_file 86172597 -11.4% 76352858 ± 2% proc-vmstat.pgscan_kswapd 2.665e+08 -16.8% 2.216e+08 proc-vmstat.pgsteal_direct 3.527e+08 -15.5% 2.98e+08 proc-vmstat.pgsteal_file 86162757 -11.4% 76344354 ± 2% proc-vmstat.pgsteal_kswapd 32455 -9.2% 29454 proc-vmstat.workingset_nodes 29.22 -3.8% 28.12 perf-stat.i.MPKI 9.106e+09 -7.8% 8.4e+09 perf-stat.i.branch-instructions 0.31 -0.0 0.28 perf-stat.i.branch-miss-rate% 27498123 -17.1% 22805880 perf-stat.i.branch-misses 1.149e+09 -12.2% 1.009e+09 perf-stat.i.cache-misses 1.437e+09 -12.3% 1.26e+09 perf-stat.i.cache-references 32277 ± 6% -15.8% 27164 perf-stat.i.context-switches 3.47 +6.1% 3.68 perf-stat.i.cpi 1.694e+11 -3.3% 1.638e+11 perf-stat.i.cpu-cycles 199.09 ± 2% -10.8% 177.56 perf-stat.i.cpu-migrations 155.84 +9.9% 171.22 perf-stat.i.cycles-between-cache-misses 1.316e+10 -9.2% 1.195e+10 perf-stat.i.dTLB-loads 6.432e+09 -12.3% 5.64e+09 perf-stat.i.dTLB-stores 2945413 -6.9% 2742636 ± 2% perf-stat.i.iTLB-load-misses 2348427 ± 2% -4.9% 2233557 ± 3% perf-stat.i.iTLB-loads 4.901e+10 -8.9% 4.465e+10 perf-stat.i.instructions 0.29 -5.8% 0.27 perf-stat.i.ipc 1.76 -3.3% 1.71 perf-stat.i.metric.GHz 0.40 -10.8% 0.35 perf-stat.i.metric.K/sec 317.63 -9.6% 287.13 perf-stat.i.metric.M/sec 25.87 ± 2% -1.3 24.57 perf-stat.i.node-load-miss-rate% 54426063 ± 2% -17.3% 45032091 perf-stat.i.node-load-misses 1.598e+08 -11.1% 1.421e+08 perf-stat.i.node-loads 33.50 ± 2% -2.0 31.51 ± 3% perf-stat.i.node-store-miss-rate% 47107474 ± 3% -17.3% 38976821 ± 4% perf-stat.i.node-store-misses 94320159 -9.4% 85453107 perf-stat.i.node-stores 29.33 -3.7% 28.23 perf-stat.overall.MPKI 0.30 -0.0 0.27 perf-stat.overall.branch-miss-rate% 3.46 +6.1% 3.67 perf-stat.overall.cpi 147.39 +10.1% 162.33 perf-stat.overall.cycles-between-cache-misses 0.29 -5.8% 0.27 perf-stat.overall.ipc 25.38 ± 2% -1.3 24.03 perf-stat.overall.node-load-miss-rate% 33.29 ± 2% -2.0 31.27 ± 3% perf-stat.overall.node-store-miss-rate% 6360319 +3.3% 6568417 perf-stat.overall.path-length 9.052e+09 -7.7% 8.354e+09 perf-stat.ps.branch-instructions 27321158 -17.0% 22669616 perf-stat.ps.branch-misses 1.143e+09 -12.2% 1.004e+09 perf-stat.ps.cache-misses 1.429e+09 -12.3% 1.254e+09 perf-stat.ps.cache-references 32159 ± 6% -16.0% 27007 perf-stat.ps.context-switches 1.685e+11 -3.3% 1.63e+11 perf-stat.ps.cpu-cycles 198.36 ± 2% -10.7% 177.07 perf-stat.ps.cpu-migrations 1.308e+10 -9.2% 1.188e+10 perf-stat.ps.dTLB-loads 6.397e+09 -12.3% 5.612e+09 perf-stat.ps.dTLB-stores 2928738 -6.9% 2727615 ± 2% perf-stat.ps.iTLB-load-misses 2334022 ± 2% -4.9% 2220752 ± 3% perf-stat.ps.iTLB-loads 4.873e+10 -8.9% 4.441e+10 perf-stat.ps.instructions 54095968 ± 2% -17.3% 44762722 perf-stat.ps.node-load-misses 1.591e+08 -11.0% 1.416e+08 perf-stat.ps.node-loads 46879405 ± 3% -17.3% 38763251 ± 4% perf-stat.ps.node-store-misses 93903849 -9.3% 85155066 perf-stat.ps.node-stores 9.852e+12 -8.9% 8.98e+12 perf-stat.total.instructions 317.00 ±150% -99.4% 1.75 ±142% interrupts.56:PCI-MSI.31981589-edge.i40e-eth0-TxRx-20 187865 ± 20% -25.6% 139835 ± 3% interrupts.CAL:Function_call_interrupts 1073 ± 7% -21.1% 847.00 ± 7% interrupts.CPU0.RES:Rescheduling_interrupts 2159 ± 51% -43.3% 1225 ± 4% interrupts.CPU1.CAL:Function_call_interrupts 853.25 ± 23% -30.9% 589.50 ± 8% interrupts.CPU1.RES:Rescheduling_interrupts 734.75 ± 9% -16.8% 611.00 ± 13% interrupts.CPU10.RES:Rescheduling_interrupts 1568 ± 17% -19.6% 1260 ± 6% interrupts.CPU11.CAL:Function_call_interrupts 728.50 ± 10% -17.6% 600.25 ± 11% interrupts.CPU11.RES:Rescheduling_interrupts 699.50 ± 12% -17.1% 579.75 ± 7% interrupts.CPU12.RES:Rescheduling_interrupts 1610 ± 8% -23.3% 1234 ± 9% interrupts.CPU13.CAL:Function_call_interrupts 727.00 ± 11% -21.9% 568.00 ± 11% interrupts.CPU13.RES:Rescheduling_interrupts 764.00 ± 10% -15.2% 647.75 ± 10% interrupts.CPU14.RES:Rescheduling_interrupts 2019 ± 42% -37.2% 1269 ± 15% interrupts.CPU15.CAL:Function_call_interrupts 755.00 ± 22% -18.7% 613.75 ± 6% interrupts.CPU16.RES:Rescheduling_interrupts 736.25 ± 10% -18.6% 599.00 ± 7% interrupts.CPU17.RES:Rescheduling_interrupts 1596 ± 19% -22.3% 1240 ± 9% interrupts.CPU18.CAL:Function_call_interrupts 706.00 ± 11% -15.1% 599.25 ± 12% interrupts.CPU18.RES:Rescheduling_interrupts 702.25 ± 8% -17.1% 582.50 ± 7% interrupts.CPU19.RES:Rescheduling_interrupts 2081 ± 40% -39.3% 1262 ± 10% interrupts.CPU2.CAL:Function_call_interrupts 316.75 ±150% -99.6% 1.25 ±173% interrupts.CPU20.56:PCI-MSI.31981589-edge.i40e-eth0-TxRx-20 1744 ± 43% -33.4% 1161 ± 5% interrupts.CPU20.CAL:Function_call_interrupts 758.25 ± 23% -20.6% 602.25 ± 7% interrupts.CPU20.RES:Rescheduling_interrupts 1786 ± 32% -33.7% 1184 ± 7% interrupts.CPU22.CAL:Function_call_interrupts 764.50 ± 15% -25.4% 570.50 ± 8% interrupts.CPU22.RES:Rescheduling_interrupts 7068 ± 7% -28.6% 5048 ± 33% interrupts.CPU23.NMI:Non-maskable_interrupts 7068 ± 7% -28.6% 5048 ± 33% interrupts.CPU23.PMI:Performance_monitoring_interrupts 692.25 ± 10% -15.3% 586.00 ± 6% interrupts.CPU23.RES:Rescheduling_interrupts 1579 ± 9% -14.4% 1352 ± 4% interrupts.CPU24.CAL:Function_call_interrupts 653.00 ± 6% -11.2% 579.75 ± 5% interrupts.CPU24.RES:Rescheduling_interrupts 661.25 ± 6% -14.1% 567.75 ± 8% interrupts.CPU25.RES:Rescheduling_interrupts 707.50 ± 6% -15.6% 597.25 ± 14% interrupts.CPU27.RES:Rescheduling_interrupts 1891 ± 12% -26.5% 1390 ± 7% interrupts.CPU29.CAL:Function_call_interrupts 688.25 ± 5% -18.3% 562.50 ± 6% interrupts.CPU29.RES:Rescheduling_interrupts 1756 ± 9% -20.7% 1391 ± 5% interrupts.CPU32.CAL:Function_call_interrupts 688.25 ± 6% -11.5% 609.25 ± 3% interrupts.CPU32.RES:Rescheduling_interrupts 1791 ± 17% -27.8% 1292 ± 15% interrupts.CPU33.CAL:Function_call_interrupts 1776 ± 6% -26.1% 1312 ± 4% interrupts.CPU34.CAL:Function_call_interrupts 669.25 ± 6% -11.5% 592.50 ± 2% interrupts.CPU34.RES:Rescheduling_interrupts 6762 ± 8% -46.8% 3599 ± 13% interrupts.CPU35.NMI:Non-maskable_interrupts 6762 ± 8% -46.8% 3599 ± 13% interrupts.CPU35.PMI:Performance_monitoring_interrupts 1900 ± 11% -19.9% 1521 ± 19% interrupts.CPU37.CAL:Function_call_interrupts 708.75 ± 3% -12.5% 620.25 ± 14% interrupts.CPU37.RES:Rescheduling_interrupts 6945 ± 6% -32.5% 4685 ± 35% interrupts.CPU39.NMI:Non-maskable_interrupts 6945 ± 6% -32.5% 4685 ± 35% interrupts.CPU39.PMI:Performance_monitoring_interrupts 1750 ± 31% -26.9% 1279 ± 7% interrupts.CPU4.CAL:Function_call_interrupts 722.00 ± 9% -16.8% 600.50 ± 11% interrupts.CPU4.RES:Rescheduling_interrupts 1699 ± 7% -17.5% 1401 ± 13% interrupts.CPU41.CAL:Function_call_interrupts 651.75 ± 7% -13.8% 561.75 ± 8% interrupts.CPU41.RES:Rescheduling_interrupts 1672 ± 4% -16.0% 1405 ± 16% interrupts.CPU42.CAL:Function_call_interrupts 1563 ± 6% -12.6% 1366 ± 2% interrupts.CPU44.CAL:Function_call_interrupts 667.25 ± 5% -17.4% 551.00 ± 8% interrupts.CPU45.RES:Rescheduling_interrupts 903.00 ± 29% -32.6% 608.50 ± 12% interrupts.CPU48.RES:Rescheduling_interrupts 2112 ± 18% -35.6% 1359 ± 6% interrupts.CPU49.CAL:Function_call_interrupts 797.25 ± 11% -23.9% 607.00 ± 11% interrupts.CPU49.RES:Rescheduling_interrupts 1880 ± 38% -35.5% 1213 ± 9% interrupts.CPU5.CAL:Function_call_interrupts 734.50 ± 16% -22.2% 571.75 ± 8% interrupts.CPU5.RES:Rescheduling_interrupts 2418 ± 46% -42.3% 1395 ± 8% interrupts.CPU50.CAL:Function_call_interrupts 830.50 ± 17% -30.2% 579.75 ± 12% interrupts.CPU50.RES:Rescheduling_interrupts 2390 ± 48% -42.2% 1382 interrupts.CPU51.CAL:Function_call_interrupts 2274 ± 35% -36.0% 1455 ± 6% interrupts.CPU52.CAL:Function_call_interrupts 827.75 ± 29% -28.5% 592.25 ± 5% interrupts.CPU53.RES:Rescheduling_interrupts 2180 ± 34% -31.8% 1486 ± 8% interrupts.CPU54.CAL:Function_call_interrupts 774.00 ± 18% -22.7% 598.00 ± 8% interrupts.CPU54.RES:Rescheduling_interrupts 2461 ± 46% -39.9% 1480 interrupts.CPU55.CAL:Function_call_interrupts 818.75 ± 17% -25.3% 611.75 ± 11% interrupts.CPU55.RES:Rescheduling_interrupts 1969 ± 8% -25.4% 1469 ± 11% interrupts.CPU56.CAL:Function_call_interrupts 783.50 ± 9% -22.0% 610.75 ± 9% interrupts.CPU56.RES:Rescheduling_interrupts 1811 ± 8% -17.7% 1491 ± 9% interrupts.CPU59.CAL:Function_call_interrupts 709.50 ± 5% -18.7% 577.00 ± 10% interrupts.CPU59.RES:Rescheduling_interrupts 2466 ± 35% -43.3% 1397 ± 6% interrupts.CPU60.CAL:Function_call_interrupts 4211 ± 27% +57.4% 6629 ± 14% interrupts.CPU60.NMI:Non-maskable_interrupts 4211 ± 27% +57.4% 6629 ± 14% interrupts.CPU60.PMI:Performance_monitoring_interrupts 796.75 ± 16% -27.4% 578.50 ± 10% interrupts.CPU60.RES:Rescheduling_interrupts 2703 ± 59% -45.8% 1464 ± 11% interrupts.CPU61.CAL:Function_call_interrupts 823.75 ± 20% -25.1% 617.25 ± 9% interrupts.CPU61.RES:Rescheduling_interrupts 2957 ± 67% -50.5% 1464 ± 5% interrupts.CPU62.CAL:Function_call_interrupts 933.00 ± 30% -33.9% 616.50 ± 4% interrupts.CPU62.RES:Rescheduling_interrupts 2366 ± 40% -37.6% 1477 ± 8% interrupts.CPU63.CAL:Function_call_interrupts 752.50 ± 5% -18.7% 612.00 ± 8% interrupts.CPU64.RES:Rescheduling_interrupts 1822 ± 15% -22.3% 1415 ± 6% interrupts.CPU65.CAL:Function_call_interrupts 703.00 ± 13% -19.7% 564.75 ± 4% interrupts.CPU65.RES:Rescheduling_interrupts 2142 ± 31% -33.2% 1431 ± 4% interrupts.CPU66.CAL:Function_call_interrupts 706.50 ± 15% -20.8% 559.25 ± 6% interrupts.CPU66.RES:Rescheduling_interrupts 2465 ± 45% -40.4% 1469 ± 6% interrupts.CPU67.CAL:Function_call_interrupts 1864 ± 7% -22.9% 1438 ± 2% interrupts.CPU68.CAL:Function_call_interrupts 786.50 ± 7% -25.3% 587.25 ± 4% interrupts.CPU68.RES:Rescheduling_interrupts 2686 ± 43% -42.6% 1541 ± 5% interrupts.CPU69.CAL:Function_call_interrupts 847.00 ± 26% -28.4% 606.50 ± 5% interrupts.CPU69.RES:Rescheduling_interrupts 2006 ± 36% -39.2% 1220 ± 4% interrupts.CPU7.CAL:Function_call_interrupts 2426 ± 41% -36.4% 1544 ± 7% interrupts.CPU70.CAL:Function_call_interrupts 755.75 ± 22% -23.2% 580.50 ± 7% interrupts.CPU70.RES:Rescheduling_interrupts 3307 ± 63% -58.3% 1378 ± 8% interrupts.CPU71.CAL:Function_call_interrupts 864.50 ± 28% -34.0% 570.50 ± 11% interrupts.CPU71.RES:Rescheduling_interrupts 1897 ± 7% -14.6% 1619 ± 8% interrupts.CPU77.CAL:Function_call_interrupts 2209 ± 21% -30.4% 1537 ± 5% interrupts.CPU78.CAL:Function_call_interrupts 667.75 ± 5% -16.8% 555.75 ± 11% interrupts.CPU78.RES:Rescheduling_interrupts 1906 ± 3% -16.2% 1598 ± 12% interrupts.CPU79.CAL:Function_call_interrupts 622.25 ± 8% -13.5% 538.00 ± 9% interrupts.CPU81.RES:Rescheduling_interrupts 1917 -14.8% 1632 ± 10% interrupts.CPU83.CAL:Function_call_interrupts 1985 ± 8% -19.0% 1608 ± 8% interrupts.CPU84.CAL:Function_call_interrupts 2316 ± 5% -27.5% 1679 ± 8% interrupts.CPU85.CAL:Function_call_interrupts 679.75 ± 9% -17.6% 560.00 ± 3% interrupts.CPU85.RES:Rescheduling_interrupts 677.75 ± 3% -15.4% 573.25 ± 12% interrupts.CPU86.RES:Rescheduling_interrupts 2145 ± 14% -30.8% 1484 ± 8% interrupts.CPU87.CAL:Function_call_interrupts 641.25 ± 5% -13.9% 552.25 ± 3% interrupts.CPU87.RES:Rescheduling_interrupts 1923 ± 6% -13.3% 1666 ± 4% interrupts.CPU88.CAL:Function_call_interrupts 2201 ± 7% -18.2% 1799 ± 14% interrupts.CPU89.CAL:Function_call_interrupts 2369 ± 60% -48.7% 1215 ± 14% interrupts.CPU9.CAL:Function_call_interrupts 791.00 ± 26% -23.7% 603.25 ± 13% interrupts.CPU9.RES:Rescheduling_interrupts 1818 ± 7% -10.1% 1634 ± 7% interrupts.CPU90.CAL:Function_call_interrupts 1897 ± 6% -16.2% 1590 ± 10% interrupts.CPU92.CAL:Function_call_interrupts 2067 ± 7% -24.2% 1567 ± 9% interrupts.CPU93.CAL:Function_call_interrupts 2059 ± 10% -21.8% 1611 ± 10% interrupts.CPU95.CAL:Function_call_interrupts 68476 ± 6% -17.0% 56847 interrupts.RES:Rescheduling_interrupts 5.80 ± 5% -5.8 0.00 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.__pagevec_lru_add.lru_cache_add.add_to_page_cache_lru.page_cache_readahead_unbounded 5.75 ± 5% -5.7 0.00 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.__pagevec_lru_add.lru_cache_add.add_to_page_cache_lru 22.83 -5.3 17.49 ± 4% perf-profile.calltrace.cycles-pp.__alloc_pages_nodemask.page_cache_readahead_unbounded.generic_file_buffered_read.new_sync_read.vfs_read 12.61 ± 4% -5.1 7.54 ± 7% perf-profile.calltrace.cycles-pp.shrink_page_list.shrink_inactive_list.shrink_lruvec.shrink_node.do_try_to_free_pages 7.78 ± 8% -3.3 4.47 ± 9% perf-profile.calltrace.cycles-pp.btrfs_releasepage.shrink_page_list.shrink_inactive_list.shrink_lruvec.shrink_node 7.67 ± 8% -3.3 4.40 ± 9% perf-profile.calltrace.cycles-pp.try_release_extent_mapping.btrfs_releasepage.shrink_page_list.shrink_inactive_list.shrink_lruvec 18.40 ± 2% -2.7 15.65 ± 5% perf-profile.calltrace.cycles-pp.__alloc_pages_slowpath.__alloc_pages_nodemask.page_cache_readahead_unbounded.generic_file_buffered_read.new_sync_read 4.31 ± 7% -2.6 1.72 ± 7% perf-profile.calltrace.cycles-pp.get_page_from_freelist.__alloc_pages_nodemask.page_cache_readahead_unbounded.generic_file_buffered_read.new_sync_read 17.87 ± 4% -2.6 15.31 ± 5% perf-profile.calltrace.cycles-pp.shrink_node.do_try_to_free_pages.try_to_free_pages.__alloc_pages_slowpath.__alloc_pages_nodemask 17.75 ± 4% -2.5 15.23 ± 5% perf-profile.calltrace.cycles-pp.shrink_lruvec.shrink_node.do_try_to_free_pages.try_to_free_pages.__alloc_pages_slowpath 17.74 ± 4% -2.5 15.22 ± 5% perf-profile.calltrace.cycles-pp.shrink_inactive_list.shrink_lruvec.shrink_node.do_try_to_free_pages.try_to_free_pages 3.98 ± 7% -2.5 1.50 ± 9% perf-profile.calltrace.cycles-pp.rmqueue.get_page_from_freelist.__alloc_pages_nodemask.page_cache_readahead_unbounded.generic_file_buffered_read 3.74 ± 8% -2.5 1.29 ± 10% perf-profile.calltrace.cycles-pp.rmqueue_bulk.rmqueue.get_page_from_freelist.__alloc_pages_nodemask.page_cache_readahead_unbounded 3.08 ± 8% -2.4 0.73 ± 13% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.rmqueue_bulk.rmqueue.get_page_from_freelist 3.08 ± 9% -2.4 0.73 ± 13% perf-profile.calltrace.cycles-pp._raw_spin_lock.rmqueue_bulk.rmqueue.get_page_from_freelist.__alloc_pages_nodemask 17.59 ± 3% -2.3 15.31 ± 5% perf-profile.calltrace.cycles-pp.try_to_free_pages.__alloc_pages_slowpath.__alloc_pages_nodemask.page_cache_readahead_unbounded.generic_file_buffered_read 17.58 ± 3% -2.3 15.31 ± 5% perf-profile.calltrace.cycles-pp.do_try_to_free_pages.try_to_free_pages.__alloc_pages_slowpath.__alloc_pages_nodemask.page_cache_readahead_unbounded 4.49 ± 4% -2.0 2.44 ± 6% perf-profile.calltrace.cycles-pp.__remove_mapping.shrink_page_list.shrink_inactive_list.shrink_lruvec.shrink_node 3.32 -1.6 1.69 ± 8% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.__remove_mapping.shrink_page_list.shrink_inactive_list.shrink_lruvec 3.15 -1.6 1.56 ± 8% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.__remove_mapping.shrink_page_list.shrink_inactive_list 3.65 ± 7% -1.4 2.23 ± 10% perf-profile.calltrace.cycles-pp.__clear_extent_bit.try_release_extent_mapping.btrfs_releasepage.shrink_page_list.shrink_inactive_list 3.26 ± 7% -1.3 1.94 ± 9% perf-profile.calltrace.cycles-pp.test_range_bit.try_release_extent_mapping.btrfs_releasepage.shrink_page_list.shrink_inactive_list 3.15 ± 7% -1.3 1.87 ± 11% perf-profile.calltrace.cycles-pp._raw_spin_lock.__clear_extent_bit.try_release_extent_mapping.btrfs_releasepage.shrink_page_list 3.03 ± 7% -1.2 1.79 ± 11% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.__clear_extent_bit.try_release_extent_mapping.btrfs_releasepage 3.02 ± 7% -1.2 1.78 ± 10% perf-profile.calltrace.cycles-pp._raw_spin_lock.test_range_bit.try_release_extent_mapping.btrfs_releasepage.shrink_page_list 2.93 ± 8% -1.2 1.73 ± 10% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.test_range_bit.try_release_extent_mapping.btrfs_releasepage 1.82 ± 7% -0.7 1.12 ± 6% perf-profile.calltrace.cycles-pp.free_unref_page_list.release_pages.__pagevec_release.invalidate_mapping_pages.generic_fadvise 1.72 ± 7% -0.7 1.03 ± 6% perf-profile.calltrace.cycles-pp.free_pcppages_bulk.free_unref_page_list.release_pages.__pagevec_release.invalidate_mapping_pages 2.14 ± 3% -0.5 1.61 ± 4% perf-profile.calltrace.cycles-pp.__add_to_page_cache_locked.add_to_page_cache_lru.page_cache_readahead_unbounded.generic_file_buffered_read.new_sync_read 4.13 ± 6% -0.4 3.69 ± 2% perf-profile.calltrace.cycles-pp.ret_from_fork 4.13 ± 6% -0.4 3.69 ± 2% perf-profile.calltrace.cycles-pp.kthread.ret_from_fork 1.36 ± 9% -0.4 0.96 ± 4% perf-profile.calltrace.cycles-pp.shrink_page_list.shrink_inactive_list.shrink_lruvec.shrink_node.balance_pgdat 0.58 ± 6% -0.3 0.26 ±100% perf-profile.calltrace.cycles-pp.__list_del_entry_valid.rmqueue_bulk.rmqueue.get_page_from_freelist.__alloc_pages_nodemask 2.12 ± 7% -0.3 1.81 perf-profile.calltrace.cycles-pp.worker_thread.kthread.ret_from_fork 2.02 ± 7% -0.3 1.73 perf-profile.calltrace.cycles-pp.process_one_work.worker_thread.kthread.ret_from_fork 2.57 -0.3 2.32 ± 7% perf-profile.calltrace.cycles-pp.lru_note_cost.shrink_inactive_list.shrink_lruvec.shrink_node.do_try_to_free_pages 1.59 ± 5% -0.2 1.38 ± 2% perf-profile.calltrace.cycles-pp.pagecache_get_page.generic_file_buffered_read.new_sync_read.vfs_read.ksys_read 1.56 ± 5% -0.2 1.36 ± 2% perf-profile.calltrace.cycles-pp.find_get_entry.pagecache_get_page.generic_file_buffered_read.new_sync_read.vfs_read 0.83 ± 8% -0.2 0.64 ± 2% perf-profile.calltrace.cycles-pp.mem_cgroup_charge.__add_to_page_cache_locked.add_to_page_cache_lru.page_cache_readahead_unbounded.generic_file_buffered_read 1.12 ± 5% -0.1 0.99 perf-profile.calltrace.cycles-pp.btrfs_submit_bio_hook.submit_one_bio.extent_readahead.read_pages.page_cache_readahead_unbounded 1.10 ± 5% -0.1 0.97 perf-profile.calltrace.cycles-pp.btrfs_map_bio.btrfs_submit_bio_hook.submit_one_bio.extent_readahead.read_pages 1.10 ± 5% -0.1 0.97 perf-profile.calltrace.cycles-pp.submit_bio.btrfs_map_bio.btrfs_submit_bio_hook.submit_one_bio.extent_readahead 1.12 ± 5% -0.1 0.99 perf-profile.calltrace.cycles-pp.submit_one_bio.extent_readahead.read_pages.page_cache_readahead_unbounded.generic_file_buffered_read 0.80 ± 6% -0.1 0.68 ± 3% perf-profile.calltrace.cycles-pp.crc_42 6.53 ± 8% +1.9 8.44 ± 5% perf-profile.calltrace.cycles-pp.__x64_sys_fadvise64.do_syscall_64.entry_SYSCALL_64_after_hwframe 6.53 ± 8% +1.9 8.44 ± 5% perf-profile.calltrace.cycles-pp.ksys_fadvise64_64.__x64_sys_fadvise64.do_syscall_64.entry_SYSCALL_64_after_hwframe 6.53 ± 8% +1.9 8.44 ± 5% perf-profile.calltrace.cycles-pp.generic_fadvise.ksys_fadvise64_64.__x64_sys_fadvise64.do_syscall_64.entry_SYSCALL_64_after_hwframe 6.52 ± 8% +1.9 8.43 ± 5% perf-profile.calltrace.cycles-pp.invalidate_mapping_pages.generic_fadvise.ksys_fadvise64_64.__x64_sys_fadvise64.do_syscall_64 4.73 ± 8% +2.1 6.82 ± 6% perf-profile.calltrace.cycles-pp.__pagevec_release.invalidate_mapping_pages.generic_fadvise.ksys_fadvise64_64.__x64_sys_fadvise64 4.73 ± 8% +2.1 6.82 ± 6% perf-profile.calltrace.cycles-pp.release_pages.__pagevec_release.invalidate_mapping_pages.generic_fadvise.ksys_fadvise64_64 47.16 ± 3% +2.3 49.51 perf-profile.calltrace.cycles-pp.page_cache_readahead_unbounded.generic_file_buffered_read.new_sync_read.vfs_read.ksys_read 1.88 +3.0 4.91 ± 7% perf-profile.calltrace.cycles-pp._raw_spin_lock_irq.shrink_inactive_list.shrink_lruvec.shrink_node.do_try_to_free_pages 63.88 ± 4% +3.2 67.03 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe 63.88 ± 4% +3.2 67.03 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe 1.86 +3.2 5.03 ± 11% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irq.shrink_inactive_list.shrink_lruvec.shrink_node 0.00 +5.0 4.96 ± 7% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.lock_page_lruvec_irqsave.release_pages.__pagevec_release 0.00 +5.0 5.00 ± 7% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.lock_page_lruvec_irqsave.release_pages.__pagevec_release.invalidate_mapping_pages 0.00 +5.0 5.00 ± 7% perf-profile.calltrace.cycles-pp.lock_page_lruvec_irqsave.release_pages.__pagevec_release.invalidate_mapping_pages.generic_fadvise 8.93 ± 4% +9.4 18.30 perf-profile.calltrace.cycles-pp.add_to_page_cache_lru.page_cache_readahead_unbounded.generic_file_buffered_read.new_sync_read.vfs_read 6.76 ± 5% +9.9 16.65 ± 2% perf-profile.calltrace.cycles-pp.lru_cache_add.add_to_page_cache_lru.page_cache_readahead_unbounded.generic_file_buffered_read.new_sync_read 6.68 ± 5% +9.9 16.59 ± 2% perf-profile.calltrace.cycles-pp.__pagevec_lru_add.lru_cache_add.add_to_page_cache_lru.page_cache_readahead_unbounded.generic_file_buffered_read 0.00 +15.3 15.27 ± 2% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.lock_page_lruvec_irqsave.__pagevec_lru_add.lru_cache_add 0.00 +15.3 15.33 ± 2% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.lock_page_lruvec_irqsave.__pagevec_lru_add.lru_cache_add.add_to_page_cache_lru 0.00 +15.3 15.33 ± 2% perf-profile.calltrace.cycles-pp.lock_page_lruvec_irqsave.__pagevec_lru_add.lru_cache_add.add_to_page_cache_lru.page_cache_readahead_unbounded 12.23 ± 2% -6.5 5.76 ± 8% perf-profile.children.cycles-pp._raw_spin_lock 14.49 ± 4% -5.8 8.70 ± 6% perf-profile.children.cycles-pp.shrink_page_list 23.67 -5.7 17.93 ± 4% perf-profile.children.cycles-pp.__alloc_pages_nodemask 8.61 ± 7% -3.3 5.31 ± 8% perf-profile.children.cycles-pp.btrfs_releasepage 8.42 ± 7% -3.3 5.16 ± 8% perf-profile.children.cycles-pp.try_release_extent_mapping 19.13 ± 3% -3.1 16.05 ± 5% perf-profile.children.cycles-pp.__alloc_pages_slowpath 5.15 ± 6% -3.1 2.08 ± 6% perf-profile.children.cycles-pp.get_page_from_freelist 4.78 ± 6% -3.0 1.83 ± 7% perf-profile.children.cycles-pp.rmqueue 4.40 ± 7% -2.9 1.55 ± 8% perf-profile.children.cycles-pp.rmqueue_bulk 20.22 ± 3% -2.7 17.50 ± 5% perf-profile.children.cycles-pp.shrink_node 20.09 ± 3% -2.7 17.42 ± 5% perf-profile.children.cycles-pp.shrink_lruvec 20.08 ± 3% -2.7 17.41 ± 5% perf-profile.children.cycles-pp.shrink_inactive_list 18.30 ± 4% -2.6 15.70 ± 5% perf-profile.children.cycles-pp.try_to_free_pages 18.29 ± 4% -2.6 15.69 ± 5% perf-profile.children.cycles-pp.do_try_to_free_pages 5.63 -2.2 3.40 ± 5% perf-profile.children.cycles-pp.__remove_mapping 4.42 ± 7% -1.6 2.77 ± 8% perf-profile.children.cycles-pp.__clear_extent_bit 3.96 ± 7% -1.6 2.40 ± 8% perf-profile.children.cycles-pp.test_range_bit 2.45 ± 4% -1.0 1.48 ± 5% perf-profile.children.cycles-pp.free_pcppages_bulk 2.54 ± 4% -1.0 1.58 ± 3% perf-profile.children.cycles-pp.free_unref_page_list 2.15 ± 3% -0.5 1.62 ± 4% perf-profile.children.cycles-pp.__add_to_page_cache_locked 4.13 ± 6% -0.4 3.69 ± 2% perf-profile.children.cycles-pp.kthread 4.14 ± 6% -0.4 3.70 ± 3% perf-profile.children.cycles-pp.ret_from_fork 0.99 ± 20% -0.4 0.59 ± 19% perf-profile.children.cycles-pp.kmem_cache_alloc 0.79 ± 26% -0.4 0.41 ± 27% perf-profile.children.cycles-pp.allocate_slab 0.80 ± 26% -0.4 0.42 ± 27% perf-profile.children.cycles-pp.___slab_alloc 0.80 ± 26% -0.4 0.42 ± 27% perf-profile.children.cycles-pp.__slab_alloc 2.12 ± 7% -0.3 1.81 perf-profile.children.cycles-pp.worker_thread 2.91 -0.3 2.60 ± 7% perf-profile.children.cycles-pp.lru_note_cost 2.02 ± 7% -0.3 1.73 perf-profile.children.cycles-pp.process_one_work 1.66 ± 3% -0.3 1.37 perf-profile.children.cycles-pp.__list_del_entry_valid 0.66 ± 22% -0.2 0.42 ± 19% perf-profile.children.cycles-pp.alloc_extent_state 0.69 ± 19% -0.2 0.46 ± 17% perf-profile.children.cycles-pp.__set_extent_bit 0.62 ± 22% -0.2 0.40 ± 20% perf-profile.children.cycles-pp.lock_extent_bits 0.64 ± 21% -0.2 0.42 ± 19% perf-profile.children.cycles-pp.btrfs_lock_and_flush_ordered_range 1.24 ± 3% -0.2 1.03 ± 3% perf-profile.children.cycles-pp.__delete_from_page_cache 1.59 ± 5% -0.2 1.38 ± 2% perf-profile.children.cycles-pp.pagecache_get_page 1.57 ± 5% -0.2 1.36 ± 2% perf-profile.children.cycles-pp.find_get_entry 0.84 ± 7% -0.2 0.65 ± 2% perf-profile.children.cycles-pp.mem_cgroup_charge 0.51 ± 4% -0.1 0.38 ± 5% perf-profile.children.cycles-pp.__etree_search 0.75 ± 4% -0.1 0.62 ± 2% perf-profile.children.cycles-pp.xas_store 0.23 ± 30% -0.1 0.10 ± 32% perf-profile.children.cycles-pp.xas_nomem 0.39 ± 3% -0.1 0.28 ± 4% perf-profile.children.cycles-pp.xas_create 0.55 ± 5% -0.1 0.46 perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt 0.51 ± 8% -0.1 0.42 ± 3% perf-profile.children.cycles-pp.__mod_memcg_state 0.47 ± 6% -0.1 0.38 ± 2% perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt 0.47 ± 5% -0.1 0.39 ± 2% perf-profile.children.cycles-pp.asm_call_on_stack 0.32 ± 3% -0.1 0.24 ± 4% perf-profile.children.cycles-pp.workingset_eviction 0.30 ± 3% -0.1 0.22 ± 3% perf-profile.children.cycles-pp.unlock_page 0.51 ± 5% -0.1 0.43 ± 7% perf-profile.children.cycles-pp.unaccount_page_cache_page 0.39 ± 4% -0.1 0.32 ± 2% perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt 0.40 ± 4% -0.1 0.33 ± 4% perf-profile.children.cycles-pp.clear_state_bit 0.44 ± 6% -0.1 0.37 ± 6% perf-profile.children.cycles-pp.mem_cgroup_uncharge_list 0.38 ± 5% -0.1 0.31 ± 2% perf-profile.children.cycles-pp.hrtimer_interrupt 0.18 ± 6% -0.1 0.12 ± 3% perf-profile.children.cycles-pp._raw_write_lock 0.36 ± 6% -0.1 0.30 ± 5% perf-profile.children.cycles-pp.uncharge_batch 0.23 ± 9% -0.1 0.18 ± 2% perf-profile.children.cycles-pp.__count_memcg_events 0.17 ± 11% -0.1 0.12 ± 7% perf-profile.children.cycles-pp.get_mem_cgroup_from_mm 0.31 ± 5% -0.1 0.26 perf-profile.children.cycles-pp.try_charge 0.12 ± 7% -0.0 0.07 ± 6% perf-profile.children.cycles-pp.xas_alloc 0.30 ± 7% -0.0 0.26 ± 5% perf-profile.children.cycles-pp.page_counter_uncharge 0.21 ± 3% -0.0 0.16 ± 5% perf-profile.children.cycles-pp.__mod_node_page_state 0.16 ± 2% -0.0 0.11 ± 3% perf-profile.children.cycles-pp.split_state 0.24 ± 2% -0.0 0.20 perf-profile.children.cycles-pp.xas_init_marks 0.24 ± 5% -0.0 0.20 ± 4% perf-profile.children.cycles-pp.__mod_lruvec_state 0.18 ± 10% -0.0 0.13 ± 3% perf-profile.children.cycles-pp.mem_cgroup_charge_statistics 0.30 ± 6% -0.0 0.26 ± 5% perf-profile.children.cycles-pp.page_counter_cancel 0.26 ± 7% -0.0 0.22 ± 3% perf-profile.children.cycles-pp.__hrtimer_run_queues 0.13 ± 8% -0.0 0.09 ± 7% perf-profile.children.cycles-pp.__softirqentry_text_start 0.19 ± 7% -0.0 0.15 ± 5% perf-profile.children.cycles-pp.kmem_cache_free 0.20 ± 8% -0.0 0.17 ± 6% perf-profile.children.cycles-pp.tick_sched_timer 0.22 ± 3% -0.0 0.18 ± 2% perf-profile.children.cycles-pp.xa_load 0.18 ± 8% -0.0 0.15 ± 6% perf-profile.children.cycles-pp.update_process_times 0.11 ± 9% -0.0 0.08 ± 8% perf-profile.children.cycles-pp.rcu_core 0.18 ± 8% -0.0 0.15 ± 5% perf-profile.children.cycles-pp.tick_sched_handle 0.11 ± 10% -0.0 0.08 ± 10% perf-profile.children.cycles-pp.rcu_do_batch 0.08 ± 10% -0.0 0.06 ± 14% perf-profile.children.cycles-pp.run_ksoftirqd 0.12 ± 8% -0.0 0.10 ± 4% perf-profile.children.cycles-pp.scheduler_tick 0.12 ± 5% -0.0 0.10 ± 5% perf-profile.children.cycles-pp.__mod_zone_page_state 0.16 ± 6% -0.0 0.14 ± 5% perf-profile.children.cycles-pp.page_counter_try_charge 0.08 ± 10% -0.0 0.06 ± 11% perf-profile.children.cycles-pp.smpboot_thread_fn 0.12 ± 5% -0.0 0.10 ± 8% perf-profile.children.cycles-pp.workingset_age_nonresident 0.15 -0.0 0.13 perf-profile.children.cycles-pp.xas_clear_mark 0.12 ± 5% -0.0 0.10 perf-profile.children.cycles-pp.__schedule 0.10 ± 4% -0.0 0.08 perf-profile.children.cycles-pp.schedule 0.08 ± 8% -0.0 0.06 ± 6% perf-profile.children.cycles-pp.task_tick_fair 0.11 ± 4% -0.0 0.09 perf-profile.children.cycles-pp.xas_start 0.08 ± 6% -0.0 0.06 ± 11% perf-profile.children.cycles-pp._cond_resched 0.10 ± 4% -0.0 0.09 perf-profile.children.cycles-pp.free_extent_state 0.06 ± 6% -0.0 0.05 perf-profile.children.cycles-pp.pick_next_task_fair 0.15 ± 3% -0.0 0.14 ± 3% perf-profile.children.cycles-pp.__lookup_extent_mapping 0.06 -0.0 0.05 perf-profile.children.cycles-pp.workingset_update_node 0.14 ± 6% +0.0 0.15 ± 3% perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore 0.09 ± 7% +0.0 0.13 ± 6% perf-profile.children.cycles-pp.__list_add_valid 0.50 ± 3% +0.0 0.55 ± 4% perf-profile.children.cycles-pp.isolate_lru_pages 6.53 ± 8% +1.9 8.44 ± 5% perf-profile.children.cycles-pp.__x64_sys_fadvise64 6.53 ± 8% +1.9 8.44 ± 5% perf-profile.children.cycles-pp.ksys_fadvise64_64 6.53 ± 8% +1.9 8.44 ± 5% perf-profile.children.cycles-pp.generic_fadvise 6.52 ± 8% +1.9 8.44 ± 5% perf-profile.children.cycles-pp.invalidate_mapping_pages 4.83 ± 8% +2.1 6.90 ± 6% perf-profile.children.cycles-pp.release_pages 4.73 ± 8% +2.1 6.82 ± 6% perf-profile.children.cycles-pp.__pagevec_release 47.17 ± 3% +2.3 49.51 perf-profile.children.cycles-pp.page_cache_readahead_unbounded 5.29 +3.0 8.26 ± 7% perf-profile.children.cycles-pp._raw_spin_lock_irq 63.99 ± 4% +3.1 67.13 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 63.98 ± 4% +3.1 67.12 perf-profile.children.cycles-pp.do_syscall_64 28.11 ± 2% +7.2 35.36 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath 8.94 ± 4% +9.4 18.30 perf-profile.children.cycles-pp.add_to_page_cache_lru 6.76 ± 5% +9.9 16.67 ± 2% perf-profile.children.cycles-pp.lru_cache_add 6.70 ± 5% +9.9 16.64 ± 2% perf-profile.children.cycles-pp.__pagevec_lru_add 11.74 ± 4% +10.6 22.30 ± 3% perf-profile.children.cycles-pp._raw_spin_lock_irqsave 0.00 +20.4 20.40 ± 3% perf-profile.children.cycles-pp.lock_page_lruvec_irqsave 1.66 ± 3% -0.3 1.37 perf-profile.self.cycles-pp.__list_del_entry_valid 1.22 ± 8% -0.2 1.03 ± 2% perf-profile.self.cycles-pp.end_bio_extent_readpage 1.32 ± 5% -0.2 1.14 ± 2% perf-profile.self.cycles-pp.find_get_entry 0.49 ± 5% -0.1 0.36 ± 5% perf-profile.self.cycles-pp.__etree_search 0.63 ± 4% -0.1 0.52 perf-profile.self.cycles-pp._raw_spin_lock 0.32 ± 5% -0.1 0.21 ± 2% perf-profile.self.cycles-pp.get_page_from_freelist 0.73 ± 5% -0.1 0.63 perf-profile.self.cycles-pp.free_pcppages_bulk 0.50 ± 9% -0.1 0.42 ± 3% perf-profile.self.cycles-pp.__mod_memcg_state 0.29 ± 2% -0.1 0.22 perf-profile.self.cycles-pp.unlock_page 0.26 ± 3% -0.1 0.19 ± 3% perf-profile.self.cycles-pp.__remove_mapping 0.37 ± 3% -0.1 0.30 perf-profile.self.cycles-pp._raw_spin_lock_irqsave 0.18 ± 6% -0.1 0.12 ± 3% perf-profile.self.cycles-pp._raw_write_lock 0.20 ± 6% -0.1 0.14 ± 3% perf-profile.self.cycles-pp.workingset_eviction 0.27 -0.1 0.21 ± 3% perf-profile.self.cycles-pp.xas_create 0.23 ± 9% -0.1 0.18 ± 2% perf-profile.self.cycles-pp.__count_memcg_events 0.17 ± 11% -0.1 0.12 ± 7% perf-profile.self.cycles-pp.get_mem_cgroup_from_mm 0.30 ± 6% -0.0 0.25 ± 7% perf-profile.self.cycles-pp.__add_to_page_cache_locked 0.16 ± 4% -0.0 0.11 ± 4% perf-profile.self.cycles-pp.try_release_extent_mapping 0.37 ± 3% -0.0 0.33 ± 2% perf-profile.self.cycles-pp.__do_readpage 0.20 ± 5% -0.0 0.16 ± 4% perf-profile.self.cycles-pp.__mod_node_page_state 0.19 ± 6% -0.0 0.15 ± 2% perf-profile.self.cycles-pp.btrfs_releasepage 0.16 ± 8% -0.0 0.12 ± 7% perf-profile.self.cycles-pp.mem_cgroup_charge 0.12 ± 5% -0.0 0.08 ± 5% perf-profile.self.cycles-pp.split_state 0.26 ± 7% -0.0 0.22 ± 6% perf-profile.self.cycles-pp.page_counter_cancel 0.19 ± 4% -0.0 0.16 ± 10% perf-profile.self.cycles-pp.unaccount_page_cache_page 0.15 ± 2% -0.0 0.12 ± 3% perf-profile.self.cycles-pp.kmem_cache_alloc 0.15 ± 5% -0.0 0.12 ± 4% perf-profile.self.cycles-pp.page_counter_try_charge 0.12 ± 3% -0.0 0.09 ± 7% perf-profile.self.cycles-pp.__mod_zone_page_state 0.12 ± 10% -0.0 0.09 ± 4% perf-profile.self.cycles-pp.crc_36 0.15 ± 3% -0.0 0.12 perf-profile.self.cycles-pp.xas_clear_mark 0.11 ± 6% -0.0 0.09 ± 5% perf-profile.self.cycles-pp.rmqueue_bulk 0.10 ± 4% -0.0 0.07 ± 5% perf-profile.self.cycles-pp.xas_init_marks 0.12 ± 5% -0.0 0.10 ± 8% perf-profile.self.cycles-pp.workingset_age_nonresident 0.10 ± 8% -0.0 0.08 ± 6% perf-profile.self.cycles-pp.__delete_from_page_cache 0.08 -0.0 0.06 ± 6% perf-profile.self.cycles-pp.clear_state_bit 0.15 ± 3% -0.0 0.13 ± 5% perf-profile.self.cycles-pp._raw_spin_lock_irq 0.09 ± 4% -0.0 0.08 ± 5% perf-profile.self.cycles-pp.test_range_bit 0.07 ± 5% -0.0 0.06 perf-profile.self.cycles-pp.pmem_submit_bio 0.15 ± 3% -0.0 0.14 ± 3% perf-profile.self.cycles-pp.xas_store 0.08 ± 8% +0.0 0.12 ± 6% perf-profile.self.cycles-pp.__list_add_valid 0.60 ± 5% +0.1 0.68 ± 2% perf-profile.self.cycles-pp.extent_readahead 0.11 ± 3% +0.1 0.25 ± 2% perf-profile.self.cycles-pp.isolate_lru_pages 0.29 ± 3% +0.4 0.66 perf-profile.self.cycles-pp.__pagevec_lru_add 28.07 ± 2% +7.3 35.34 perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath fio.read_bw_MBps 16000 +-------------------------------------------------------------------+ | .+. : +.. + +. | 15500 |.+ +..+. : +.+..+.+.. .. + .. +.. .+.+..+..+. | | +..+..+ + + +. +..+ | | | 15000 |-+ | | | 14500 |-+ | | | 14000 |-+ O | | O O O | | O O O O O O O O O O | 13500 |-+O O O O O O O | | O O O O | 13000 +-------------------------------------------------------------------+ fio.read_iops 8000 +--------------------------------------------------------------------+ | +. | 7800 |-.+.+..+.. .. +..+.. .+..+.. .+.. .+..+.. .+..+.. .+.. | |. +.+..+ + + + + + +..+ | 7600 |-+ | | | 7400 |-+ | | | 7200 |-+ | | | 7000 |-+ O | | O O O O O | 6800 |-+ O O O O O O O O O O | | O O O O O | 6600 +--------------------------------------------------------------------+ fio.read_clat_mean_us 6.4e+06 +-----------------------------------------------------------------+ 6.3e+06 |-+ O | | O O | 6.2e+06 |-+O O O O O O O O O O | 6.1e+06 |-+ O O O O O O O O O | 6e+06 |-+ O O O | 5.9e+06 |-+ | | | 5.8e+06 |-+ | 5.7e+06 |-+ | 5.6e+06 |-+ +..+ | 5.5e+06 |.. .+.+.. .+.. .+.. .+.. .+..+.+..+.+.. + | | +.+..+.+. .+..+ +.+. + + + | 5.4e+06 |-+ + | 5.3e+06 +-----------------------------------------------------------------+ fio.read_clat_90__us 2.05e+07 +----------------------------------------------------------------+ 2e+07 |-+ O | | O O O O O O O O O | 1.95e+07 |-+ O O O O O O | 1.9e+07 |-+ O O O O O O O O | 1.85e+07 |-+ O | 1.8e+07 |-+ | | | 1.75e+07 |-+ | 1.7e+07 |-+ | 1.65e+07 |-+ | 1.6e+07 |.. .+.+..+.+.. .+.+.. .+. .+. .+.+.. | | +.+. .+. +.+. +. +. +.+..+. .+.+ | 1.55e+07 |-+ + +. | 1.5e+07 +----------------------------------------------------------------+ fio.latency_500us_ 26 +----------------------------------------------------------------------+ 25 |-+ O | | O O O O O O O O O | 24 |-+ O O O O O O O O | 23 |-+ O O O O O O O | 22 |-+ | 21 |-+ | | | 20 |-+ | 19 |-+ | 18 |-+ .+ .+ | 17 |..+. .+.. .+. + .+.. +..+.+.. .+. | | +. +..+.+. + .+..+..+..+.+..+..+ .. +. | 16 |-+ + + | 15 +----------------------------------------------------------------------+ fio.latency_10ms_ 8 +---------------------------------------------------------------------+ | .+ | 7.5 |-+ +..+..+.+..+. | 7 |..+. .+.. .+..+. .+.+.. .+. .+..+ + | | +. +.+..+. +..+. +. +. + + | 6.5 |-+ + | 6 |-+ | | | 5.5 |-+ | 5 |-+ | | O O O O O | 4.5 |-+ O O O O O O O O O O O O O | 4 |-+ O O O O O | | O O | 3.5 +---------------------------------------------------------------------+ fio.latency_50ms_ 9 +---------------------------------------------------------------------+ | O | 8.5 |-+ O O O | | O O O O O O O O | | O O O O O O O O O | 8 |-+ O O O O | | | 7.5 |-+ | | | 7 |-+ .+. .+.. .+. | |..+.+..+. +..+..+..+ +.. .+.. .+. .+. +.. | | + +. +. +..+..+. .+..+ | 6.5 |-+ +. | | | 6 +---------------------------------------------------------------------+ fio.workload 1.6e+06 +----------------------------------------------------------------+ | .+. + +.. +.. +.. | 1.55e+06 |.+ +..+.+.. + +.+..+.+.. + + +. .+.+..+.+.. | | +.+ + + +. +.+ | | | 1.5e+06 |-+ | | | 1.45e+06 |-+ | | | 1.4e+06 |-+ O | | O O O O | | O O O O O O O O O | 1.35e+06 |-+O O O O O O O | | O O O O | 1.3e+06 +----------------------------------------------------------------+ fio.time.file_system_inputs 6.6e+09 +-----------------------------------------------------------------+ | +. | 6.4e+09 |-.+.+..+. .. +.. .+.+.. .+. .+.+.. .+. | |. +..+.+ +.+. +. +. +.+..+.+. +..+ | | | 6.2e+09 |-+ | | | 6e+09 |-+ | | | 5.8e+09 |-+ | | O | | O O O O O O O | 5.6e+09 |-+ O O O O O O O O O | | O O O O O O O | 5.4e+09 +-----------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample *************************************************************************************************** lkp-skl-fpga01: 104 threads Skylake with 192G memory ========================================================================================= compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase/ucode: gcc-9/performance/x86_64-rhel-8.3/process/100%/debian-10.4-x86_64-20200603.cgz/lkp-skl-fpga01/page_fault2/will-it-scale/0x2006906 commit: 0c5e8d9feb ("mm/mlock: remove __munlock_isolate_lru_page") 44c86dfabf ("mm/lru: replace pgdat lru_lock with lruvec lock") 0c5e8d9febd9f026 44c86dfabfbbb310b5135c0e8b6 ---------------- --------------------------- fail:runs %reproduction fail:runs | | | 1:2 64% 2:4 perf-profile.calltrace.cycles-pp.sync_regs.error_entry.testcase 2:2 130% 5:4 perf-profile.calltrace.cycles-pp.error_entry.testcase 3:2 136% 5:4 perf-profile.children.cycles-pp.error_entry 1:2 68% 2:4 perf-profile.self.cycles-pp.error_entry %stddev %change %stddev \ | \ 74710 -11.1% 66448 will-it-scale.per_process_ops 7769969 -11.1% 6910637 will-it-scale.workload 3.64 ± 3% -0.5 3.11 mpstat.cpu.all.usr% 1390 -2.0% 1362 vmstat.system.cs 1.151e+09 -11.0% 1.025e+09 ± 2% numa-numastat.node0.local_node 1.151e+09 -11.0% 1.025e+09 ± 2% numa-numastat.node0.numa_hit 1.198e+09 -11.1% 1.066e+09 numa-numastat.node1.local_node 1.198e+09 -11.1% 1.066e+09 numa-numastat.node1.numa_hit 1670 ± 14% +25.3% 2091 ± 4% slabinfo.dmaengine-unmap-16.active_objs 1670 ± 14% +25.3% 2091 ± 4% slabinfo.dmaengine-unmap-16.num_objs 918.00 +20.4% 1105 ± 6% slabinfo.mnt_cache.active_objs 918.00 +20.4% 1105 ± 6% slabinfo.mnt_cache.num_objs 0.50 ±100% +12550.0% 63.25 ±114% numa-vmstat.node1.nr_active_file 5990 ± 4% -7.2% 5560 ± 2% numa-vmstat.node1.nr_mapped 0.50 ±100% +12550.0% 63.25 ±114% numa-vmstat.node1.nr_zone_active_file 6.007e+08 -11.2% 5.332e+08 numa-vmstat.node1.numa_hit 6.005e+08 -11.2% 5.331e+08 numa-vmstat.node1.numa_local 2.347e+09 -11.1% 2.088e+09 proc-vmstat.numa_hit 2.347e+09 -11.1% 2.088e+09 proc-vmstat.numa_local 2.35e+09 -11.1% 2.09e+09 proc-vmstat.pgalloc_normal 2.34e+09 -11.1% 2.081e+09 proc-vmstat.pgfault 2.349e+09 -11.1% 2.087e+09 proc-vmstat.pgfree 67117 -3.0% 65096 proc-vmstat.pgreuse 165746 ± 16% -44.0% 92831 ± 45% sched_debug.cfs_rq:/.MIN_vruntime.avg 12794315 ± 5% -50.2% 6372286 ± 28% sched_debug.cfs_rq:/.MIN_vruntime.max 1408188 ± 9% -48.8% 720458 ± 33% sched_debug.cfs_rq:/.MIN_vruntime.stddev 80320 ± 4% -31.3% 55186 ± 42% sched_debug.cfs_rq:/.load.stddev 165746 ± 16% -44.0% 92831 ± 45% sched_debug.cfs_rq:/.max_vruntime.avg 12794315 ± 5% -50.2% 6372286 ± 28% sched_debug.cfs_rq:/.max_vruntime.max 1408188 ± 9% -48.8% 720458 ± 33% sched_debug.cfs_rq:/.max_vruntime.stddev 59.32 ± 3% -8.7% 54.14 ± 6% sched_debug.cfs_rq:/.nr_spread_over.stddev 125.03 +13.9% 142.40 ± 4% sched_debug.cfs_rq:/.runnable_avg.stddev 248861 ± 91% +124.5% 558786 ± 3% sched_debug.cpu.avg_idle.min 155314 ± 4% -16.1% 130352 ± 7% sched_debug.cpu.avg_idle.stddev 14.05 ± 23% -19.0% 11.38 ± 25% sched_debug.cpu.clock.stddev 732.03 ± 4% -11.3% 648.96 ± 4% sched_debug.cpu.clock_task.stddev 605543 ± 7% -10.5% 541811 ± 4% sched_debug.cpu.max_idle_balance_cost.max 12349 ± 22% -48.9% 6314 ± 62% sched_debug.cpu.max_idle_balance_cost.stddev 13987 ± 4% +18.9% 16636 ± 6% sched_debug.cpu.nr_switches.max 1596 ± 6% -9.4% 1446 ± 7% sched_debug.cpu.sched_count.stddev 730.51 ± 2% -12.7% 637.48 ± 7% sched_debug.cpu.ttwu_count.stddev 60057 -2.6% 58474 interrupts.CAL:Function_call_interrupts 562.50 ± 8% -32.2% 381.50 ± 8% interrupts.CPU2.RES:Rescheduling_interrupts 318.50 ± 30% -32.3% 215.75 ± 2% interrupts.CPU21.RES:Rescheduling_interrupts 212.50 +49.1% 316.75 ± 47% interrupts.CPU25.RES:Rescheduling_interrupts 1156 ± 43% -45.6% 629.00 ± 25% interrupts.CPU29.CAL:Function_call_interrupts 317.50 ± 18% -19.9% 254.25 ± 9% interrupts.CPU31.RES:Rescheduling_interrupts 258.00 ± 5% -8.7% 235.50 ± 2% interrupts.CPU32.RES:Rescheduling_interrupts 525.00 -9.8% 473.75 interrupts.CPU37.CAL:Function_call_interrupts 435.50 ± 40% -57.9% 183.25 ± 5% interrupts.CPU37.RES:Rescheduling_interrupts 141.00 ± 4% -19.1% 114.00 ± 15% interrupts.CPU45.RES:Rescheduling_interrupts 124.50 ± 17% -31.5% 85.25 ± 11% interrupts.CPU48.RES:Rescheduling_interrupts 826.50 ± 2% -12.7% 721.75 ± 3% interrupts.CPU53.CAL:Function_call_interrupts 859.00 ± 29% -29.5% 606.00 ± 2% interrupts.CPU58.CAL:Function_call_interrupts 763.50 ± 28% -19.1% 617.75 ± 33% interrupts.CPU6.CAL:Function_call_interrupts 791.00 ± 11% -27.9% 570.25 ± 6% interrupts.CPU60.CAL:Function_call_interrupts 77.50 ± 14% +441.9% 420.00 ± 81% interrupts.CPU62.RES:Rescheduling_interrupts 3911 +101.9% 7896 interrupts.CPU63.NMI:Non-maskable_interrupts 3911 +101.9% 7896 interrupts.CPU63.PMI:Performance_monitoring_interrupts 36.50 ± 17% +90.4% 69.50 ± 35% interrupts.CPU65.RES:Rescheduling_interrupts 26.00 ± 11% +749.0% 220.75 ±106% interrupts.CPU68.RES:Rescheduling_interrupts 7859 -37.3% 4927 ± 34% interrupts.CPU70.NMI:Non-maskable_interrupts 7859 -37.3% 4927 ± 34% interrupts.CPU70.PMI:Performance_monitoring_interrupts 7839 -37.2% 4926 ± 34% interrupts.CPU71.NMI:Non-maskable_interrupts 7839 -37.2% 4926 ± 34% interrupts.CPU71.PMI:Performance_monitoring_interrupts 503.50 ± 3% -7.2% 467.25 interrupts.CPU72.CAL:Function_call_interrupts 506.00 ± 3% -6.8% 471.75 interrupts.CPU74.CAL:Function_call_interrupts 799.00 ± 8% -9.3% 724.50 ± 6% interrupts.CPU78.CAL:Function_call_interrupts 1163 ± 10% -34.9% 757.75 ± 8% interrupts.CPU80.CAL:Function_call_interrupts 941.50 ± 14% -25.3% 703.50 ± 10% interrupts.CPU81.CAL:Function_call_interrupts 1109 ± 35% -67.5% 360.50 ± 7% interrupts.CPU81.RES:Rescheduling_interrupts 891.00 ± 18% -28.8% 634.50 ± 4% interrupts.CPU82.CAL:Function_call_interrupts 988.50 -59.2% 403.75 ± 32% interrupts.CPU82.RES:Rescheduling_interrupts 116.50 ± 9% -28.1% 83.75 ± 15% interrupts.CPU88.RES:Rescheduling_interrupts 574.00 ± 5% -14.6% 490.25 ± 3% interrupts.CPU9.CAL:Function_call_interrupts 489.00 ± 33% -50.3% 243.00 ± 8% interrupts.CPU9.RES:Rescheduling_interrupts 473.50 +24.6% 589.75 ± 21% interrupts.CPU91.CAL:Function_call_interrupts 3904 +102.7% 7914 interrupts.CPU95.NMI:Non-maskable_interrupts 3904 +102.7% 7914 interrupts.CPU95.PMI:Performance_monitoring_interrupts 22.50 ± 6% +522.2% 140.00 ±113% interrupts.CPU98.RES:Rescheduling_interrupts 258.00 ± 75% -83.6% 42.25 ± 53% interrupts.CPU99.RES:Rescheduling_interrupts 7.708e+09 -7.7% 7.113e+09 perf-stat.i.branch-instructions 30906896 -8.1% 28391684 perf-stat.i.branch-misses 74.70 -2.4 72.34 perf-stat.i.cache-miss-rate% 6.82e+08 -11.1% 6.063e+08 perf-stat.i.cache-misses 9.092e+08 -8.2% 8.343e+08 perf-stat.i.cache-references 1361 -1.9% 1336 perf-stat.i.context-switches 7.27 +9.4% 7.95 perf-stat.i.cpi 429.82 +12.9% 485.13 perf-stat.i.cycles-between-cache-misses 17892232 ± 2% -13.7% 15448523 ± 3% perf-stat.i.dTLB-load-misses 1.058e+10 -8.9% 9.64e+09 perf-stat.i.dTLB-loads 1.24 -0.0 1.22 perf-stat.i.dTLB-store-miss-rate% 65867958 -12.5% 57633448 perf-stat.i.dTLB-store-misses 5.205e+09 -11.0% 4.633e+09 perf-stat.i.dTLB-stores 15554157 ± 3% -8.4% 14253928 ± 2% perf-stat.i.iTLB-load-misses 3.954e+10 -8.5% 3.618e+10 perf-stat.i.instructions 0.14 -8.1% 0.13 perf-stat.i.ipc 0.74 +8.4% 0.80 perf-stat.i.metric.K/sec 236.67 -9.1% 215.25 perf-stat.i.metric.M/sec 7714008 -10.9% 6876972 perf-stat.i.minor-faults 2920678 -11.5% 2583907 perf-stat.i.node-load-misses 1.514e+08 -10.8% 1.35e+08 perf-stat.i.node-loads 3356543 -11.1% 2983135 perf-stat.i.node-store-misses 44021143 -11.7% 38892081 ± 2% perf-stat.i.node-stores 7714009 -10.9% 6876973 perf-stat.i.page-faults 0.40 -0.0 0.39 perf-stat.overall.branch-miss-rate% 75.04 -2.3 72.71 perf-stat.overall.cache-miss-rate% 7.29 +9.5% 7.99 perf-stat.overall.cpi 422.48 +12.7% 475.92 perf-stat.overall.cycles-between-cache-misses 1.25 -0.0 1.23 perf-stat.overall.dTLB-store-miss-rate% 0.14 -8.7% 0.13 perf-stat.overall.ipc 1534009 +2.6% 1573577 perf-stat.overall.path-length 7.659e+09 -7.9% 7.057e+09 perf-stat.ps.branch-instructions 30443566 -8.9% 27747536 perf-stat.ps.branch-misses 6.784e+08 -11.2% 6.026e+08 perf-stat.ps.cache-misses 9.041e+08 -8.3% 8.289e+08 perf-stat.ps.cache-references 1346 -2.1% 1318 perf-stat.ps.context-switches 104.41 -1.4% 102.98 perf-stat.ps.cpu-migrations 17825946 ± 2% -13.5% 15414423 ± 3% perf-stat.ps.dTLB-load-misses 1.052e+10 -9.0% 9.567e+09 perf-stat.ps.dTLB-loads 65493569 -12.6% 57235079 perf-stat.ps.dTLB-store-misses 5.173e+09 -11.1% 4.599e+09 perf-stat.ps.dTLB-stores 15462920 ± 3% -8.4% 14157175 ± 2% perf-stat.ps.iTLB-load-misses 3.929e+10 -8.6% 3.589e+10 perf-stat.ps.instructions 0.81 ± 2% -5.8% 0.76 ± 5% perf-stat.ps.major-faults 7671341 -10.9% 6832656 perf-stat.ps.minor-faults 2898356 -11.6% 2563559 perf-stat.ps.node-load-misses 1.508e+08 -10.8% 1.345e+08 perf-stat.ps.node-loads 3337117 -11.2% 2963007 perf-stat.ps.node-store-misses 43687678 -11.7% 38554571 ± 2% perf-stat.ps.node-stores 7671342 -10.9% 6832657 perf-stat.ps.page-faults 1.192e+13 -8.8% 1.087e+13 perf-stat.total.instructions 45.97 -46.0 0.00 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.__pagevec_lru_add.lru_cache_add.alloc_set_pte.finish_fault 45.92 -45.9 0.00 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.__pagevec_lru_add.lru_cache_add.alloc_set_pte 20.05 -20.1 0.00 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.release_pages.tlb_flush_mmu.zap_pte_range.unmap_page_range 20.04 -20.0 0.00 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.release_pages.tlb_flush_mmu.zap_pte_range 3.42 -0.8 2.62 perf-profile.calltrace.cycles-pp.alloc_pages_vma.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault 3.16 -0.8 2.36 perf-profile.calltrace.cycles-pp.__alloc_pages_nodemask.alloc_pages_vma.do_fault.__handle_mm_fault.handle_mm_fault 2.93 -0.8 2.15 perf-profile.calltrace.cycles-pp.get_page_from_freelist.__alloc_pages_nodemask.alloc_pages_vma.do_fault.__handle_mm_fault 2.76 -0.8 2.00 perf-profile.calltrace.cycles-pp.rmqueue.get_page_from_freelist.__alloc_pages_nodemask.alloc_pages_vma.do_fault 2.42 -0.7 1.68 ± 2% perf-profile.calltrace.cycles-pp.rmqueue_bulk.rmqueue.get_page_from_freelist.__alloc_pages_nodemask.alloc_pages_vma 1.56 -0.7 0.89 ± 4% perf-profile.calltrace.cycles-pp._raw_spin_lock.rmqueue_bulk.rmqueue.get_page_from_freelist.__alloc_pages_nodemask 1.55 -0.7 0.88 ± 4% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.rmqueue_bulk.rmqueue.get_page_from_freelist 2.39 -0.7 1.73 ± 3% perf-profile.calltrace.cycles-pp.free_unref_page_list.release_pages.tlb_flush_mmu.zap_pte_range.unmap_page_range 2.19 -0.6 1.56 ± 3% perf-profile.calltrace.cycles-pp.free_pcppages_bulk.free_unref_page_list.release_pages.tlb_flush_mmu.zap_pte_range 6.82 -0.6 6.25 perf-profile.calltrace.cycles-pp.copy_page.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault 1.31 -0.5 0.79 ± 6% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.free_pcppages_bulk.free_unref_page_list.release_pages 1.31 -0.5 0.80 ± 5% perf-profile.calltrace.cycles-pp._raw_spin_lock.free_pcppages_bulk.free_unref_page_list.release_pages.tlb_flush_mmu 1.62 -0.3 1.37 perf-profile.calltrace.cycles-pp.mem_cgroup_charge.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault 1.29 ± 2% -0.1 1.19 perf-profile.calltrace.cycles-pp._raw_spin_lock.alloc_set_pte.finish_fault.do_fault.__handle_mm_fault 1.50 -0.1 1.43 perf-profile.calltrace.cycles-pp.irqentry_exit_to_user_mode.asm_exc_page_fault.testcase 0.67 ± 2% -0.1 0.60 ± 5% perf-profile.calltrace.cycles-pp.page_add_new_anon_rmap.alloc_set_pte.finish_fault.do_fault.__handle_mm_fault 0.73 -0.0 0.68 perf-profile.calltrace.cycles-pp.__list_del_entry_valid.rmqueue_bulk.rmqueue.get_page_from_freelist.__alloc_pages_nodemask 0.77 -0.0 0.73 perf-profile.calltrace.cycles-pp.__irqentry_text_end.testcase 2.97 +0.1 3.02 perf-profile.calltrace.cycles-pp.tlb_flush_mmu.tlb_finish_mmu.unmap_region.__do_munmap.__vm_munmap 2.97 +0.1 3.02 perf-profile.calltrace.cycles-pp.tlb_finish_mmu.unmap_region.__do_munmap.__vm_munmap.__x64_sys_munmap 2.95 +0.1 3.00 perf-profile.calltrace.cycles-pp.release_pages.tlb_flush_mmu.tlb_finish_mmu.unmap_region.__do_munmap 1.19 +0.1 1.33 perf-profile.calltrace.cycles-pp.__do_fault.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault 0.99 +0.1 1.13 perf-profile.calltrace.cycles-pp.shmem_getpage_gfp.shmem_fault.__do_fault.do_fault.__handle_mm_fault 1.13 +0.1 1.27 perf-profile.calltrace.cycles-pp.shmem_fault.__do_fault.do_fault.__handle_mm_fault.handle_mm_fault 0.89 +0.2 1.04 perf-profile.calltrace.cycles-pp.find_lock_entry.shmem_getpage_gfp.shmem_fault.__do_fault.do_fault 0.69 +0.2 0.84 perf-profile.calltrace.cycles-pp.find_get_entry.find_lock_entry.shmem_getpage_gfp.shmem_fault.__do_fault 64.82 +0.2 65.00 perf-profile.calltrace.cycles-pp.exc_page_fault.asm_exc_page_fault.testcase 64.71 +0.2 64.90 perf-profile.calltrace.cycles-pp.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase 64.06 +0.2 64.28 perf-profile.calltrace.cycles-pp.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase 23.55 +0.3 23.84 perf-profile.calltrace.cycles-pp.tlb_flush_mmu.zap_pte_range.unmap_page_range.unmap_vmas.unmap_region 63.25 +0.3 63.57 perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault 62.92 +0.3 63.24 perf-profile.calltrace.cycles-pp.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault 23.37 +0.3 23.69 perf-profile.calltrace.cycles-pp.release_pages.tlb_flush_mmu.zap_pte_range.unmap_page_range.unmap_vmas 49.48 +1.9 51.34 perf-profile.calltrace.cycles-pp.finish_fault.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault 49.45 +1.9 51.31 perf-profile.calltrace.cycles-pp.alloc_set_pte.finish_fault.do_fault.__handle_mm_fault.handle_mm_fault 47.22 +2.0 49.24 perf-profile.calltrace.cycles-pp.__pagevec_lru_add.lru_cache_add.alloc_set_pte.finish_fault.do_fault 47.31 +2.0 49.34 perf-profile.calltrace.cycles-pp.lru_cache_add.alloc_set_pte.finish_fault.do_fault.__handle_mm_fault 0.00 +2.7 2.67 perf-profile.calltrace.cycles-pp.lock_page_lruvec_irqsave.release_pages.tlb_flush_mmu.tlb_finish_mmu.unmap_region 0.00 +2.7 2.67 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.lock_page_lruvec_irqsave.release_pages.tlb_flush_mmu.tlb_finish_mmu 0.00 +21.1 21.15 perf-profile.calltrace.cycles-pp.lock_page_lruvec_irqsave.release_pages.tlb_flush_mmu.zap_pte_range.unmap_page_range 0.00 +21.1 21.15 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.lock_page_lruvec_irqsave.release_pages.tlb_flush_mmu.zap_pte_range 0.00 +23.8 23.81 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.lock_page_lruvec_irqsave.release_pages.tlb_flush_mmu 0.00 +47.8 47.75 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.lock_page_lruvec_irqsave.__pagevec_lru_add.lru_cache_add 0.00 +47.8 47.79 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.lock_page_lruvec_irqsave.__pagevec_lru_add.lru_cache_add.alloc_set_pte 0.00 +47.8 47.80 perf-profile.calltrace.cycles-pp.lock_page_lruvec_irqsave.__pagevec_lru_add.lru_cache_add.alloc_set_pte.finish_fault 4.37 -1.4 3.00 ± 3% perf-profile.children.cycles-pp._raw_spin_lock 3.45 -0.8 2.63 perf-profile.children.cycles-pp.alloc_pages_vma 3.21 -0.8 2.40 perf-profile.children.cycles-pp.__alloc_pages_nodemask 2.96 -0.8 2.19 perf-profile.children.cycles-pp.get_page_from_freelist 2.79 -0.8 2.02 perf-profile.children.cycles-pp.rmqueue 2.74 -0.8 1.97 ± 2% perf-profile.children.cycles-pp.free_unref_page_list 2.50 -0.7 1.77 ± 3% perf-profile.children.cycles-pp.free_pcppages_bulk 2.42 -0.7 1.70 ± 2% perf-profile.children.cycles-pp.rmqueue_bulk 6.84 -0.6 6.26 perf-profile.children.cycles-pp.copy_page 1.62 -0.2 1.38 perf-profile.children.cycles-pp.mem_cgroup_charge 1.14 ± 4% -0.1 1.01 ± 4% perf-profile.children.cycles-pp.__mod_memcg_lruvec_state 71.75 -0.1 71.63 perf-profile.children.cycles-pp.testcase 0.82 ± 3% -0.1 0.70 perf-profile.children.cycles-pp.__mod_memcg_state 0.57 -0.1 0.46 ± 4% perf-profile.children.cycles-pp.page_remove_rmap 0.56 -0.1 0.44 ± 4% perf-profile.children.cycles-pp.get_mem_cgroup_from_mm 0.64 ± 3% -0.1 0.53 ± 3% perf-profile.children.cycles-pp.__count_memcg_events 1.21 -0.1 1.12 perf-profile.children.cycles-pp.__list_del_entry_valid 1.52 -0.1 1.44 perf-profile.children.cycles-pp.irqentry_exit_to_user_mode 0.67 ± 2% -0.1 0.60 ± 6% perf-profile.children.cycles-pp.page_add_new_anon_rmap 0.28 ± 3% -0.0 0.24 perf-profile.children.cycles-pp.mem_cgroup_charge_statistics 0.13 -0.0 0.09 ± 7% perf-profile.children.cycles-pp.lock_page_memcg 0.77 -0.0 0.73 perf-profile.children.cycles-pp.__irqentry_text_end 0.29 -0.0 0.26 perf-profile.children.cycles-pp.__mod_lruvec_state 0.24 -0.0 0.20 ± 2% perf-profile.children.cycles-pp.__mod_node_page_state 0.96 -0.0 0.92 perf-profile.children.cycles-pp.native_irq_return_iret 0.72 -0.0 0.69 perf-profile.children.cycles-pp.sync_regs 0.40 -0.0 0.37 ± 2% perf-profile.children.cycles-pp.__perf_sw_event 0.29 -0.0 0.27 ± 3% perf-profile.children.cycles-pp.___perf_sw_event 0.18 -0.0 0.15 ± 3% perf-profile.children.cycles-pp.free_pages_and_swap_cache 0.15 ± 3% -0.0 0.14 ± 7% perf-profile.children.cycles-pp.mem_cgroup_uncharge_list 0.27 -0.0 0.25 ± 2% perf-profile.children.cycles-pp.xas_load 0.12 ± 4% -0.0 0.11 perf-profile.children.cycles-pp.__mod_zone_page_state 0.07 -0.0 0.06 perf-profile.children.cycles-pp.find_vma 2.99 +0.1 3.04 perf-profile.children.cycles-pp.tlb_finish_mmu 0.11 ± 9% +0.1 0.20 ± 6% perf-profile.children.cycles-pp.__list_add_valid 1.19 +0.1 1.33 perf-profile.children.cycles-pp.__do_fault 1.13 +0.1 1.27 perf-profile.children.cycles-pp.shmem_fault 0.90 +0.2 1.05 perf-profile.children.cycles-pp.find_lock_entry 1.00 +0.2 1.16 perf-profile.children.cycles-pp.shmem_getpage_gfp 0.69 +0.2 0.85 perf-profile.children.cycles-pp.find_get_entry 64.84 +0.2 65.02 perf-profile.children.cycles-pp.exc_page_fault 64.73 +0.2 64.92 perf-profile.children.cycles-pp.do_user_addr_fault 64.08 +0.2 64.30 perf-profile.children.cycles-pp.handle_mm_fault 63.27 +0.3 63.58 perf-profile.children.cycles-pp.__handle_mm_fault 62.94 +0.3 63.26 perf-profile.children.cycles-pp.do_fault 26.53 +0.4 26.88 perf-profile.children.cycles-pp.tlb_flush_mmu 26.45 +0.4 26.82 perf-profile.children.cycles-pp.release_pages 49.50 +1.8 51.34 perf-profile.children.cycles-pp.finish_fault 49.47 +1.9 51.32 perf-profile.children.cycles-pp.alloc_set_pte 71.62 +1.9 73.48 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath 47.34 +2.0 49.36 perf-profile.children.cycles-pp.lru_cache_add 47.28 +2.0 49.32 perf-profile.children.cycles-pp.__pagevec_lru_add 68.60 +3.1 71.70 perf-profile.children.cycles-pp._raw_spin_lock_irqsave 0.00 +71.7 71.70 perf-profile.children.cycles-pp.lock_page_lruvec_irqsave 6.81 -0.6 6.25 perf-profile.self.cycles-pp.copy_page 0.94 -0.1 0.79 ± 3% perf-profile.self.cycles-pp.zap_pte_range 0.81 ± 4% -0.1 0.70 perf-profile.self.cycles-pp.__mod_memcg_state 0.56 -0.1 0.44 ± 3% perf-profile.self.cycles-pp.get_mem_cgroup_from_mm 0.78 -0.1 0.67 perf-profile.self.cycles-pp.free_pcppages_bulk 0.63 ± 3% -0.1 0.53 ± 3% perf-profile.self.cycles-pp.__count_memcg_events 0.40 ± 2% -0.1 0.30 ± 2% perf-profile.self.cycles-pp.mem_cgroup_charge 1.30 ± 2% -0.1 1.21 perf-profile.self.cycles-pp._raw_spin_lock 1.21 -0.1 1.12 perf-profile.self.cycles-pp.__list_del_entry_valid 2.11 -0.1 2.03 perf-profile.self.cycles-pp.testcase 1.46 -0.1 1.40 perf-profile.self.cycles-pp.irqentry_exit_to_user_mode 0.96 -0.0 0.92 perf-profile.self.cycles-pp.native_irq_return_iret 0.77 -0.0 0.73 perf-profile.self.cycles-pp.__irqentry_text_end 0.23 -0.0 0.20 ± 2% perf-profile.self.cycles-pp.__mod_node_page_state 0.12 -0.0 0.09 ± 4% perf-profile.self.cycles-pp.lock_page_memcg 0.33 -0.0 0.29 perf-profile.self.cycles-pp.release_pages 0.20 ± 2% -0.0 0.17 ± 6% perf-profile.self.cycles-pp.page_remove_rmap 0.71 -0.0 0.69 perf-profile.self.cycles-pp.sync_regs 0.22 -0.0 0.19 ± 2% perf-profile.self.cycles-pp.rmqueue 0.17 ± 2% -0.0 0.15 ± 4% perf-profile.self.cycles-pp.free_pages_and_swap_cache 0.12 ± 4% -0.0 0.11 ± 4% perf-profile.self.cycles-pp.__mod_zone_page_state 0.12 ± 8% -0.0 0.10 ± 7% perf-profile.self.cycles-pp.page_add_new_anon_rmap 0.24 -0.0 0.22 perf-profile.self.cycles-pp.___perf_sw_event 0.21 -0.0 0.19 ± 4% perf-profile.self.cycles-pp.do_fault 0.19 -0.0 0.17 ± 2% perf-profile.self.cycles-pp.try_charge 0.33 -0.0 0.31 perf-profile.self.cycles-pp.__handle_mm_fault 0.10 ± 10% +0.1 0.19 ± 6% perf-profile.self.cycles-pp.__list_add_valid 0.43 +0.1 0.57 ± 6% perf-profile.self.cycles-pp.__pagevec_lru_add 0.42 +0.2 0.59 perf-profile.self.cycles-pp.find_get_entry 71.62 +1.9 73.48 perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Rong Chen

1 year, 10 months

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[core/entry] b6ec413461: will-it-scale.per_process_ops 5.0% improvement

by kernel test robot

Greeting, FYI, we noticed a 5.0% improvement of will-it-scale.per_process_ops due to commit: commit: b6ec413461034d49f9e586845825adb35ba308f6 ("core/entry: Report syscall correctly for trace and audit") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master in testcase: will-it-scale on test machine: 192 threads Intel(R) Xeon(R) Platinum 9242 CPU @ 2.30GHz with 192G memory with following parameters: nr_task: 16 mode: process test: lseek2 cpufreq_governor: performance ucode: 0x5002f01 test-description: Will It Scale takes a testcase and runs it from 1 through to n parallel copies to see if the testcase will scale. It builds both a process and threads based test in order to see any differences between the two. test-url: https://github.com/antonblanchard/will-it-scale In addition to that, the commit also has significant impact on the following tests: +------------------+---------------------------------------------------------------------------+ | testcase: change | will-it-scale: will-it-scale.per_process_ops 3.2% improvement | | test machine | 192 threads Intel(R) Xeon(R) Platinum 9242 CPU @ 2.30GHz with 192G memory | | test parameters | cpufreq_governor=performance | | | mode=process | | | nr_task=16 | | | test=eventfd1 | | | ucode=0x5002f01 | +------------------+---------------------------------------------------------------------------+ Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml ========================================================================================= compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase/ucode: gcc-9/performance/x86_64-rhel-8.3/process/16/debian-10.4-x86_64-20200603.cgz/lkp-csl-2ap2/lseek2/will-it-scale/0x5002f01 commit: v5.9-rc5 b6ec413461 ("core/entry: Report syscall correctly for trace and audit") v5.9-rc5 b6ec413461034d49f9e58684582 ---------------- --------------------------- %stddev %change %stddev \ | \ 9885233 +5.0% 10378311 will-it-scale.per_process_ops 1.582e+08 +5.0% 1.661e+08 will-it-scale.workload 24202 ± 4% +8.4% 26235 ± 4% cpuidle.C1.usage 14616 ± 20% +18.7% 17353 ± 8% sched_debug.cfs_rq:/.load.avg 235.73 ± 31% -28.8% 167.73 ± 8% sched_debug.cfs_rq:/.load_avg.max 17260 ± 31% +44.7% 24968 ± 18% softirqs.CPU10.RCU 14774 ± 48% +62.3% 23974 ± 22% softirqs.NET_RX 17491 ± 6% +16.9% 20449 ± 6% meminfo.Active 17487 ± 6% +16.9% 20445 ± 6% meminfo.Active(anon) 37041 ± 3% +8.2% 40071 ± 3% meminfo.Shmem 148143 ± 74% -93.9% 9079 ± 6% numa-numastat.node0.local_node 160532 ± 62% -75.1% 40045 numa-numastat.node0.numa_hit 12401 ±122% +149.7% 30966 numa-numastat.node0.other_node 2079 ± 61% -94.0% 125.00 ± 52% numa-meminfo.node0.Active 2078 ± 61% -94.0% 125.00 ± 52% numa-meminfo.node0.Active(anon) 79197 ± 18% -28.5% 56601 ± 15% numa-meminfo.node1.SUnreclaim 13420 ± 7% +25.0% 16775 ± 16% numa-meminfo.node3.Active 13420 ± 7% +25.0% 16774 ± 16% numa-meminfo.node3.Active(anon) 519.40 ± 61% -94.1% 30.50 ± 54% numa-vmstat.node0.nr_active_anon 519.40 ± 61% -94.1% 30.50 ± 54% numa-vmstat.node0.nr_zone_active_anon 29263 ±127% +188.4% 84386 ± 35% numa-vmstat.node0.numa_other 19799 ± 18% -28.5% 14150 ± 15% numa-vmstat.node1.nr_slab_unreclaimable 3349 ± 7% +25.0% 4186 ± 16% numa-vmstat.node3.nr_active_anon 3349 ± 7% +25.0% 4186 ± 16% numa-vmstat.node3.nr_zone_active_anon 4372 ± 6% +16.9% 5109 ± 6% proc-vmstat.nr_active_anon 9269 ± 3% +8.2% 10026 ± 3% proc-vmstat.nr_shmem 31421 -2.4% 30681 proc-vmstat.nr_slab_reclaimable 72340 -3.8% 69626 proc-vmstat.nr_slab_unreclaimable 4372 ± 6% +16.9% 5109 ± 6% proc-vmstat.nr_zone_active_anon 4838 ± 8% +24.9% 6045 ± 9% proc-vmstat.pgactivate 8152 ± 6% -16.4% 6812 ± 6% slabinfo.Acpi-State.active_objs 8152 ± 6% -16.4% 6812 ± 6% slabinfo.Acpi-State.num_objs 6952 ± 3% -18.4% 5674 ± 7% slabinfo.files_cache.active_objs 6952 ± 3% -18.4% 5674 ± 7% slabinfo.files_cache.num_objs 5555 ± 4% -12.6% 4854 ± 6% slabinfo.mm_struct.active_objs 5555 ± 4% -12.6% 4854 ± 6% slabinfo.mm_struct.num_objs 3792 ± 3% -11.5% 3357 ± 2% slabinfo.sighand_cache.active_objs 3865 ± 3% -10.6% 3454 slabinfo.sighand_cache.num_objs 6037 ± 2% -11.9% 5318 ± 4% slabinfo.signal_cache.num_objs 9626 ± 3% -14.6% 8218 ± 4% slabinfo.task_delay_info.active_objs 9626 ± 3% -14.6% 8218 ± 4% slabinfo.task_delay_info.num_objs 817.40 +80.0% 1471 ± 64% interrupts.CPU1.CAL:Function_call_interrupts 2575 ± 22% +94.1% 4999 ± 24% interrupts.CPU1.NMI:Non-maskable_interrupts 2575 ± 22% +94.1% 4999 ± 24% interrupts.CPU1.PMI:Performance_monitoring_interrupts 3166 ± 19% +95.3% 6184 ± 42% interrupts.CPU10.NMI:Non-maskable_interrupts 3166 ± 19% +95.3% 6184 ± 42% interrupts.CPU10.PMI:Performance_monitoring_interrupts 203.00 ± 97% -83.1% 34.25 ± 61% interrupts.CPU112.RES:Rescheduling_interrupts 244.60 ±193% -99.0% 2.50 ± 87% interrupts.CPU147.RES:Rescheduling_interrupts 49.80 ± 86% -95.0% 2.50 ±173% interrupts.CPU20.RES:Rescheduling_interrupts 824.20 ± 4% +32.6% 1092 ± 32% interrupts.CPU49.CAL:Function_call_interrupts 191937 ± 9% +22.9% 235809 ± 7% interrupts.NMI:Non-maskable_interrupts 191937 ± 9% +22.9% 235809 ± 7% interrupts.PMI:Performance_monitoring_interrupts 6526 ± 36% -38.0% 4047 ± 22% interrupts.RES:Rescheduling_interrupts 1.025e+10 +4.9% 1.076e+10 perf-stat.i.branch-instructions 1.13 -3.9% 1.09 perf-stat.i.cpi 1.54e+10 +4.5% 1.609e+10 perf-stat.i.dTLB-loads 1.016e+10 +4.9% 1.066e+10 perf-stat.i.dTLB-stores 1.616e+08 +1.7% 1.644e+08 perf-stat.i.iTLB-load-misses 5.044e+10 +4.9% 5.292e+10 perf-stat.i.instructions 313.59 +3.1% 323.35 perf-stat.i.instructions-per-iTLB-miss 0.88 +4.1% 0.92 perf-stat.i.ipc 186.80 +4.7% 195.64 perf-stat.i.metric.M/sec 1.13 -3.9% 1.09 perf-stat.overall.cpi 312.10 +3.2% 321.96 perf-stat.overall.instructions-per-iTLB-miss 0.88 +4.1% 0.92 perf-stat.overall.ipc 1.022e+10 +4.9% 1.072e+10 perf-stat.ps.branch-instructions 1.535e+10 +4.5% 1.604e+10 perf-stat.ps.dTLB-loads 1.012e+10 +4.9% 1.062e+10 perf-stat.ps.dTLB-stores 1.611e+08 +1.7% 1.638e+08 perf-stat.ps.iTLB-load-misses 5.027e+10 +4.9% 5.275e+10 perf-stat.ps.instructions 1.517e+13 +5.0% 1.592e+13 perf-stat.total.instructions 33.08 ± 6% -4.7 28.41 ± 9% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.llseek 24.83 ± 7% -4.4 20.40 ± 9% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.llseek 4.24 ± 7% -1.2 3.08 ± 5% perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state.cpuidle_enter.do_idle.cpu_startup_entry 30.98 ± 14% +6.4 37.39 ± 12% perf-profile.calltrace.cycles-pp.cpuidle_enter.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 29.97 ± 15% +6.8 36.78 ± 12% perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.do_idle.cpu_startup_entry.start_secondary 27.84 ± 16% +8.0 35.88 ± 15% perf-profile.calltrace.cycles-pp.intel_idle.cpuidle_enter_state.cpuidle_enter.do_idle.cpu_startup_entry 33.38 ± 6% -4.7 28.66 ± 9% perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 24.90 ± 6% -4.2 20.66 ± 9% perf-profile.children.cycles-pp.do_syscall_64 2.49 ± 6% -2.1 0.40 ± 11% perf-profile.children.cycles-pp.__x64_sys_lseek 3.56 ± 7% -0.8 2.77 ± 10% perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt 0.21 ± 7% -0.0 0.18 ± 10% perf-profile.children.cycles-pp.rebalance_domains 0.31 ± 6% -0.0 0.28 ± 3% [email protected] 0.67 ± 7% +0.1 0.82 ± 9% perf-profile.children.cycles-pp.__x86_indirect_thunk_rax 32.34 ± 14% +7.0 39.30 ± 14% perf-profile.children.cycles-pp.cpuidle_enter_state 32.35 ± 14% +7.0 39.31 ± 14% perf-profile.children.cycles-pp.cpuidle_enter 27.83 ± 16% +8.0 35.88 ± 15% perf-profile.children.cycles-pp.intel_idle 2.26 ± 6% -2.1 0.21 ± 13% perf-profile.self.cycles-pp.__x64_sys_lseek 3.02 ± 6% -0.9 2.09 ± 9% perf-profile.self.cycles-pp.ksys_lseek 1.69 ± 6% -0.7 1.02 ± 9% perf-profile.self.cycles-pp.do_syscall_64 0.11 ± 9% -0.0 0.09 ± 7% perf-profile.self.cycles-pp.read_tsc 27.83 ± 16% +8.0 35.88 ± 15% perf-profile.self.cycles-pp.intel_idle will-it-scale.per_process_ops 1.04e+07 +----------------------------------------------------------------+ | O O O O O O O O O O | 1.03e+07 |-+ | | | | | 1.02e+07 |-+ | | | 1.01e+07 |-+ | | | 1e+07 |-+ | | | | +. +. | 9.9e+06 |..+.+..+.. .. +.. .. +..+.. .+.+..+..+.+..+..+. .+..+..+.+..| | + + +. +. | 9.8e+06 +----------------------------------------------------------------+ will-it-scale.workload 1.67e+08 +----------------------------------------------------------------+ 1.66e+08 |-+O O O O O O O O O O O O O | | O | 1.65e+08 |-+ | 1.64e+08 |-+ | | | 1.63e+08 |-+ | 1.62e+08 |-+ | 1.61e+08 |-+ | | | 1.6e+08 |-+ | 1.59e+08 |-+ | |..+.+..+.. .+.+.. .+. .+.. .+. .+..+.+..+..+. .+..+..+.+..| 1.58e+08 |-+ +. +. +. +. +. +. | 1.57e+08 +----------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample *************************************************************************************************** lkp-csl-2ap2: 192 threads Intel(R) Xeon(R) Platinum 9242 CPU @ 2.30GHz with 192G memory ========================================================================================= compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase/ucode: gcc-9/performance/x86_64-rhel-8.3/process/16/debian-10.4-x86_64-20200603.cgz/lkp-csl-2ap2/eventfd1/will-it-scale/0x5002f01 commit: v5.9-rc5 b6ec413461 ("core/entry: Report syscall correctly for trace and audit") v5.9-rc5 b6ec413461034d49f9e58684582 ---------------- --------------------------- %stddev %change %stddev \ | \ 2798280 +3.2% 2887533 will-it-scale.per_process_ops 44772485 +3.2% 46200540 will-it-scale.workload 87.60 ± 24% +82.1% 159.50 ± 28% numa-vmstat.node3.nr_page_table_pages 20657 ± 22% +28.0% 26436 ± 15% sched_debug.cfs_rq:/.min_vruntime.min 2161 +2.3% 2210 vmstat.system.cs 191992 ±105% +165.2% 509166 ± 44% numa-numastat.node1.local_node 216868 ± 88% +142.0% 524722 ± 40% numa-numastat.node1.numa_hit 7105 ± 11% +17.0% 8311 ± 13% slabinfo.eventpoll_pwq.active_objs 7105 ± 11% +17.0% 8311 ± 13% slabinfo.eventpoll_pwq.num_objs 1.43 ± 9% +0.3 1.72 ± 8% perf-profile.calltrace.cycles-pp.__fget_light.__fdget_pos.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.82 ± 12% -0.7 0.12 ± 12% perf-profile.children.cycles-pp.__x64_sys_read 0.77 ± 10% -0.7 0.12 ± 7% perf-profile.children.cycles-pp.__x64_sys_write 0.52 ± 10% -0.1 0.41 ± 8% perf-profile.children.cycles-pp.apparmor_file_permission 0.47 ± 10% +0.1 0.61 ± 6% perf-profile.children.cycles-pp.__x86_indirect_thunk_rax 0.77 ± 11% -0.7 0.07 ± 21% perf-profile.self.cycles-pp.__x64_sys_read 0.71 ± 10% -0.7 0.06 ± 14% perf-profile.self.cycles-pp.__x64_sys_write 0.76 ± 9% -0.3 0.48 ± 6% perf-profile.self.cycles-pp.do_syscall_64 0.84 ± 10% -0.2 0.61 ± 11% perf-profile.self.cycles-pp.ksys_write 0.84 ± 11% -0.2 0.64 ± 9% perf-profile.self.cycles-pp.ksys_read 0.41 ± 11% -0.1 0.30 ± 8% perf-profile.self.cycles-pp.apparmor_file_permission 0.58 ± 89% -48.3% 0.30 ± 3% perf-stat.i.MPKI 1.506e+10 +3.1% 1.553e+10 perf-stat.i.branch-instructions 2117 +2.3% 2165 perf-stat.i.context-switches 0.74 -3.8% 0.71 perf-stat.i.cpi 0.00 ±185% -0.0 0.00 ± 11% perf-stat.i.dTLB-load-miss-rate% 699002 ±185% -94.3% 40038 ± 12% perf-stat.i.dTLB-load-misses 2.279e+10 +2.9% 2.346e+10 perf-stat.i.dTLB-loads 1.478e+10 +3.2% 1.525e+10 perf-stat.i.dTLB-stores 1.767e+08 ± 2% -2.6% 1.722e+08 perf-stat.i.iTLB-load-misses 3908623 ± 14% +8.4% 4235861 perf-stat.i.iTLB-loads 7.678e+10 +3.1% 7.919e+10 perf-stat.i.instructions 436.22 ± 2% +5.7% 461.03 perf-stat.i.instructions-per-iTLB-miss 1.35 +3.9% 1.40 perf-stat.i.ipc 274.35 +3.0% 282.62 perf-stat.i.metric.M/sec 0.58 ± 90% -48.6% 0.30 ± 3% perf-stat.overall.MPKI 0.74 -3.8% 0.71 perf-stat.overall.cpi 0.00 ±185% -0.0 0.00 ± 12% perf-stat.overall.dTLB-load-miss-rate% 434.74 ± 2% +5.8% 459.94 perf-stat.overall.instructions-per-iTLB-miss 1.35 +3.9% 1.40 perf-stat.overall.ipc 1.501e+10 +3.1% 1.548e+10 perf-stat.ps.branch-instructions 2110 +2.3% 2158 perf-stat.ps.context-switches 696387 ±185% -94.3% 39917 ± 12% perf-stat.ps.dTLB-load-misses 2.271e+10 +2.9% 2.338e+10 perf-stat.ps.dTLB-loads 1.473e+10 +3.2% 1.519e+10 perf-stat.ps.dTLB-stores 1.761e+08 ± 2% -2.6% 1.716e+08 perf-stat.ps.iTLB-load-misses 3895475 ± 14% +8.4% 4221532 perf-stat.ps.iTLB-loads 7.652e+10 +3.1% 7.892e+10 perf-stat.ps.instructions 2.31e+13 +3.1% 2.382e+13 perf-stat.total.instructions 12126 ± 28% +39.2% 16874 ± 34% softirqs.CPU100.RCU 11840 ± 31% +55.4% 18401 ± 39% softirqs.CPU102.RCU 10572 ± 11% +55.6% 16448 ± 35% softirqs.CPU104.RCU 11684 ± 29% +40.2% 16381 ± 34% softirqs.CPU106.RCU 11734 ± 31% +45.6% 17086 ± 36% softirqs.CPU108.RCU 10703 ± 7% +51.0% 16164 ± 30% softirqs.CPU11.RCU 13037 ± 30% +25.5% 16363 ± 35% softirqs.CPU110.RCU 9291 ± 6% +9.0% 10126 ± 6% softirqs.CPU115.RCU 9701 ± 9% +10.9% 10755 softirqs.CPU121.RCU 9730 ± 7% +9.9% 10689 ± 3% softirqs.CPU122.RCU 11788 ± 28% +42.5% 16796 ± 32% softirqs.CPU13.RCU 10971 ± 10% +18.5% 12996 ± 11% softirqs.CPU156.RCU 10974 ± 9% +10.8% 12158 ± 3% softirqs.CPU160.RCU 10794 ± 13% +14.6% 12365 ± 3% softirqs.CPU162.RCU 11211 ± 9% +10.2% 12359 ± 3% softirqs.CPU163.RCU 11176 ± 7% +9.5% 12240 ± 3% softirqs.CPU165.RCU 11092 ± 8% +9.7% 12168 ± 3% softirqs.CPU167.RCU 10702 ± 8% +10.7% 11842 ± 4% softirqs.CPU168.RCU 10387 ± 10% +13.2% 11756 ± 3% softirqs.CPU169.RCU 10337 ± 9% +12.9% 11672 ± 3% softirqs.CPU170.RCU 10579 ± 9% +12.6% 11911 ± 5% softirqs.CPU171.RCU 10539 ± 9% +13.9% 12000 ± 7% softirqs.CPU172.RCU 10516 ± 9% +10.2% 11592 ± 4% softirqs.CPU173.RCU 10491 ± 10% +11.3% 11682 ± 5% softirqs.CPU174.RCU 10410 ± 10% +11.7% 11628 ± 4% softirqs.CPU175.RCU 10714 ± 9% +11.8% 11973 ± 3% softirqs.CPU181.RCU 10813 ± 10% +13.2% 12240 ± 7% softirqs.CPU189.RCU 10340 ± 6% +14.0% 11788 ± 3% softirqs.CPU22.RCU 10412 ± 6% +16.3% 12106 ± 3% softirqs.CPU23.RCU 10211 ± 8% +11.2% 11360 ± 4% softirqs.CPU25.RCU 10031 ± 8% +10.7% 11107 ± 2% softirqs.CPU26.RCU 11991 ± 9% +7.6% 12904 ± 3% softirqs.CPU34.RCU 11613 ± 9% +9.5% 12712 ± 3% softirqs.CPU38.RCU 11600 ±117% +91.6% 22232 ± 76% softirqs.CPU4.SCHED 11729 ± 8% +10.0% 12899 ± 3% softirqs.CPU40.RCU 11808 ± 9% +11.9% 13211 ± 4% softirqs.CPU45.RCU 14100 ± 33% +18.9% 16772 ± 30% softirqs.CPU5.RCU 11311 ± 9% +11.4% 12604 ± 2% softirqs.CPU64.RCU 11492 ± 9% +11.8% 12848 ± 5% softirqs.CPU65.RCU 11340 ± 9% +12.3% 12734 ± 4% softirqs.CPU71.RCU 10991 ± 10% +12.5% 12364 ± 5% softirqs.CPU73.RCU 10941 ± 8% +11.5% 12195 ± 4% softirqs.CPU74.RCU 11032 ± 9% +11.3% 12274 ± 5% softirqs.CPU75.RCU 11103 ± 9% +8.4% 12033 ± 4% softirqs.CPU76.RCU 10933 ± 9% +9.8% 12000 ± 4% softirqs.CPU77.RCU 10915 ± 9% +11.5% 12173 ± 5% softirqs.CPU78.RCU 10888 ± 8% +9.8% 11957 ± 4% softirqs.CPU79.RCU 17681 ± 3% +15.6% 20433 ± 8% softirqs.CPU96.RCU 17146 ± 22% +27.1% 21799 ± 10% softirqs.CPU97.RCU 10.60 ± 95% +725.5% 87.50 ±138% interrupts.CPU120.RES:Rescheduling_interrupts 1135 ± 36% -29.0% 806.25 interrupts.CPU121.CAL:Function_call_interrupts 810.20 +52.3% 1234 ± 44% interrupts.CPU127.CAL:Function_call_interrupts 4.40 ± 54% +621.6% 31.75 ±133% interrupts.CPU146.TLB:TLB_shootdowns 139.40 ± 15% -31.1% 96.00 ± 23% interrupts.CPU147.NMI:Non-maskable_interrupts 139.40 ± 15% -31.1% 96.00 ± 23% interrupts.CPU147.PMI:Performance_monitoring_interrupts 4.00 ± 54% +806.2% 36.25 ±142% interrupts.CPU149.TLB:TLB_shootdowns 133.60 ± 8% -38.2% 82.50 ± 32% interrupts.CPU165.NMI:Non-maskable_interrupts 133.60 ± 8% -38.2% 82.50 ± 32% interrupts.CPU165.PMI:Performance_monitoring_interrupts 133.20 ± 9% -38.1% 82.50 ± 33% interrupts.CPU166.NMI:Non-maskable_interrupts 133.20 ± 9% -38.1% 82.50 ± 33% interrupts.CPU166.PMI:Performance_monitoring_interrupts 155.40 ± 33% -46.6% 83.00 ± 33% interrupts.CPU167.NMI:Non-maskable_interrupts 155.40 ± 33% -46.6% 83.00 ± 33% interrupts.CPU167.PMI:Performance_monitoring_interrupts 134.20 ± 11% -36.1% 85.75 ± 34% interrupts.CPU168.NMI:Non-maskable_interrupts 134.20 ± 11% -36.1% 85.75 ± 34% interrupts.CPU168.PMI:Performance_monitoring_interrupts 160.40 ± 37% -46.7% 85.50 ± 31% interrupts.CPU169.NMI:Non-maskable_interrupts 160.40 ± 37% -46.7% 85.50 ± 31% interrupts.CPU169.PMI:Performance_monitoring_interrupts 133.00 ± 11% -36.7% 84.25 ± 34% interrupts.CPU170.NMI:Non-maskable_interrupts 133.00 ± 11% -36.7% 84.25 ± 34% interrupts.CPU170.PMI:Performance_monitoring_interrupts 138.60 ± 20% -48.8% 71.00 ± 39% interrupts.CPU171.NMI:Non-maskable_interrupts 138.60 ± 20% -48.8% 71.00 ± 39% interrupts.CPU171.PMI:Performance_monitoring_interrupts 132.20 ± 11% -35.9% 84.75 ± 35% interrupts.CPU172.NMI:Non-maskable_interrupts 132.20 ± 11% -35.9% 84.75 ± 35% interrupts.CPU172.PMI:Performance_monitoring_interrupts 20.60 ±145% +637.9% 152.00 ±124% interrupts.CPU18.RES:Rescheduling_interrupts 144.00 ± 9% -34.5% 94.25 ± 31% interrupts.CPU191.NMI:Non-maskable_interrupts 144.00 ± 9% -34.5% 94.25 ± 31% interrupts.CPU191.PMI:Performance_monitoring_interrupts 83.80 ±167% -99.1% 0.75 ±173% interrupts.CPU23.RES:Rescheduling_interrupts 806.40 +8.8% 877.50 ± 6% interrupts.CPU28.CAL:Function_call_interrupts 805.60 +205.7% 2463 ± 97% interrupts.CPU31.CAL:Function_call_interrupts 1.60 ±108% +4181.2% 68.50 ±123% interrupts.CPU31.RES:Rescheduling_interrupts 816.00 +29.5% 1056 ± 21% interrupts.CPU39.CAL:Function_call_interrupts 804.00 +16.6% 937.25 ± 15% interrupts.CPU42.CAL:Function_call_interrupts 803.00 +16.3% 934.25 ± 12% interrupts.CPU43.CAL:Function_call_interrupts 803.00 +231.5% 2662 ± 99% interrupts.CPU44.CAL:Function_call_interrupts 803.60 +25.1% 1005 ± 19% interrupts.CPU45.CAL:Function_call_interrupts 133.40 ± 11% -37.2% 83.75 ± 35% interrupts.CPU48.NMI:Non-maskable_interrupts 133.40 ± 11% -37.2% 83.75 ± 35% interrupts.CPU48.PMI:Performance_monitoring_interrupts 130.60 ± 10% -37.4% 81.75 ± 35% interrupts.CPU50.NMI:Non-maskable_interrupts 130.60 ± 10% -37.4% 81.75 ± 35% interrupts.CPU50.PMI:Performance_monitoring_interrupts 131.80 ± 10% -27.7% 95.25 ± 24% interrupts.CPU51.NMI:Non-maskable_interrupts 131.80 ± 10% -27.7% 95.25 ± 24% interrupts.CPU51.PMI:Performance_monitoring_interrupts 726.40 ± 20% +33.8% 971.75 ± 16% interrupts.CPU73.CAL:Function_call_interrupts 129.00 ± 11% -35.1% 83.75 ± 35% interrupts.CPU89.NMI:Non-maskable_interrupts 129.00 ± 11% -35.1% 83.75 ± 35% interrupts.CPU89.PMI:Performance_monitoring_interrupts 847.20 ± 10% +76.8% 1498 ± 46% interrupts.CPU9.CAL:Function_call_interrupts 129.80 ± 11% -25.3% 97.00 ± 23% interrupts.CPU90.NMI:Non-maskable_interrupts 129.80 ± 11% -25.3% 97.00 ± 23% interrupts.CPU90.PMI:Performance_monitoring_interrupts 128.40 ± 11% -35.4% 83.00 ± 35% interrupts.CPU91.NMI:Non-maskable_interrupts 128.40 ± 11% -35.4% 83.00 ± 35% interrupts.CPU91.PMI:Performance_monitoring_interrupts 128.80 ± 12% -25.3% 96.25 ± 23% interrupts.CPU92.NMI:Non-maskable_interrupts 128.80 ± 12% -25.3% 96.25 ± 23% interrupts.CPU92.PMI:Performance_monitoring_interrupts Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Rong Chen

1 year, 10 months

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[seqlock] 1909760f5f: WARNING:inconsistent_lock_state

by kernel test robot

Greeting, FYI, we noticed the following commit (built with gcc-9): commit: 1909760f5fc3f123e47b4e24e0ccdc0fc8f3f106 ("seqlock: PREEMPT_RT: Do not starve seqlock_t writers") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master in testcase: kernel-selftests version: kernel-selftests-x86_64-e8e8f16e-1_20200807 with following parameters: group: kselftests-net ucode: 0x21 test-description: The kernel contains a set of "self tests" under the tools/testing/selftests/ directory. These are intended to be small unit tests to exercise individual code paths in the kernel. test-url: https://www.kernel.org/doc/Documentation/kselftest.txt on test machine: 4 threads Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz with 8G memory caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +---------------------------------------+------------+------------+ | | 8117ab508f | 1909760f5f | +---------------------------------------+------------+------------+ | boot_successes | 0 | 0 | | boot_failures | 0 | 27 | | dmesg.WARNING:inconsistent_lock_state | 0 | 27 | +---------------------------------------+------------+------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot <lkp(a)intel.com> kern :warn : [ 309.808218] WARNING: inconsistent lock state kern :warn : [ 309.813923] 5.9.0-rc2-00048-g1909760f5fc3f #1 Not tainted kern :warn : [ 309.820815] -------------------------------- kern :warn : [ 309.826576] inconsistent {IN-SOFTIRQ-R} -> {SOFTIRQ-ON-W} usage. kern :warn : [ 309.834089] ip/16990 [HC0[0]:SC0[0]:HE1:SE1] takes: kern :warn : [ 309.840492] ffff88803171b290 (&s->seqcount#10){+.+-}-{0:0}, at: xfrm_user_rcv_msg+0x135/0x1e0 kern :warn : [ 309.850616] {IN-SOFTIRQ-R} state was registered at: kern :warn : [ 309.857021] lock_acquire+0xaf/0x380 kern :warn : [ 309.862214] xfrm_policy_lookup_inexact_addr+0x101/0x120 kern :warn : [ 309.869157] xfrm_policy_find_inexact_candidates+0x50/0xc0 kern :warn : [ 309.876895] xfrm_policy_lookup_bytype+0x48a/0x760 kern :warn : [ 309.883326] xfrm_lookup_with_ifid+0x212/0xc20 kern :warn : [ 309.889390] mld_sendpack+0x187/0x3a0 kern :warn : [ 309.894657] mld_ifc_timer_expire+0x1bb/0x360 kern :warn : [ 309.900603] call_timer_fn+0xa6/0x2e0 kern :warn : [ 309.905848] run_timer_softirq+0x40c/0x5c0 kern :warn : [ 309.911556] __do_softirq+0xea/0x4eb kern :warn : [ 309.916720] asm_call_on_stack+0x12/0x20 kern :warn : [ 309.922222] do_softirq_own_stack+0x78/0xa0 kern :warn : [ 309.927976] irq_exit_rcu+0xcf/0x120 kern :warn : [ 309.933110] sysvec_apic_timer_interrupt+0x58/0xe0 kern :warn : [ 309.939505] asm_sysvec_apic_timer_interrupt+0x12/0x20 kern :warn : [ 309.946271] cpuidle_enter_state+0x110/0x4e0 kern :warn : [ 309.952154] cpuidle_enter+0x29/0x40 kern :warn : [ 309.957344] do_idle+0x201/0x280 kern :warn : [ 309.962181] cpu_startup_entry+0x19/0x20 kern :warn : [ 309.967725] start_secondary+0x120/0x160 kern :warn : [ 309.973257] secondary_startup_64+0xb6/0xc0 kern :warn : [ 309.979048] irq event stamp: 5701 kern :warn : [ 309.983904] hardirqs last enabled at (5701): [<ffffffff81d96b8a>] syscall_enter_from_user_mode+0x2a/0x2a0 kern :warn : [ 309.995231] hardirqs last disabled at (5700): [<ffffffff81d916cf>] do_syscall_64+0xf/0x40 kern :warn : [ 310.005065] softirqs last enabled at (5688): [<ffffffff81b8b030>] netlink_insert+0x50/0x120 kern :warn : [ 310.015146] softirqs last disabled at (5686): [<ffffffff81ae0cd9>] release_sock+0x19/0xa0 kern :warn : [ 310.024945] other info that might help us debug this: kern :warn : [ 310.034639] Possible unsafe locking scenario: kern :warn : [ 310.043674] CPU0 kern :warn : [ 310.047673] ---- kern :warn : [ 310.051631] lock(&s->seqcount#10); kern :warn : [ 310.056738] <Interrupt> kern :warn : [ 310.060875] lock(&s->seqcount#10); kern :warn : [ 310.066130] *** DEADLOCK *** kern :warn : [ 310.076439] 2 locks held by ip/16990: kern :warn : [ 310.081591] #0: ffff88803171b628 (&net->xfrm.xfrm_cfg_mutex){+.+.}-{3:3}, at: xfrm_netlink_rcv+0x24/0x40 kern :warn : [ 310.092781] #1: ffff88803171b2d8 (&(&net->xfrm.policy_hthresh.lock)->lock){+.+.}-{2:2}, at: xfrm_set_spdinfo+0xab/0x160 kern :warn : [ 310.105327] stack backtrace: kern :warn : [ 310.112731] CPU: 2 PID: 16990 Comm: ip Not tainted 5.9.0-rc2-00048-g1909760f5fc3f #1 kern :warn : [ 310.122097] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013 kern :warn : [ 310.131472] Call Trace: kern :warn : [ 310.135475] dump_stack+0x8d/0xc0 kern :warn : [ 310.140377] mark_lock_irq+0x4f2/0x500 kern :warn : [ 310.145730] ? stack_trace_save+0x4b/0x80 kern :warn : [ 310.151298] ? save_trace+0x42/0x360 kern :warn : [ 310.156420] mark_lock+0x1c1/0x500 kern :warn : [ 310.161338] __lock_acquire+0x393/0xb80 kern :warn : [ 310.166684] lock_acquire+0xaf/0x380 kern :warn : [ 310.171732] ? xfrm_user_rcv_msg+0x135/0x1e0 kern :warn : [ 310.177509] xfrm_set_spdinfo+0xd4/0x160 kern :warn : [ 310.182918] ? xfrm_user_rcv_msg+0x135/0x1e0 kern :warn : [ 310.188671] xfrm_user_rcv_msg+0x135/0x1e0 kern :warn : [ 310.194248] ? __mutex_lock+0x21d/0x9e0 kern :warn : [ 310.199553] ? preempt_count_sub+0xa1/0xe0 kern :warn : [ 310.205144] ? __mutex_lock+0x21d/0x9e0 kern :warn : [ 310.210457] ? lock_acquire+0xaf/0x380 kern :warn : [ 310.215655] ? netlink_deliver_tap+0x93/0x3e0 kern :warn : [ 310.221468] ? xfrm_netlink_rcv+0x24/0x40 kern :warn : [ 310.226901] ? xfrm_user_state_lookup+0xc0/0xc0 kern :warn : [ 310.233909] netlink_rcv_skb+0x49/0x120 kern :warn : [ 310.239169] xfrm_netlink_rcv+0x33/0x40 kern :warn : [ 310.244425] netlink_unicast+0x191/0x240 kern :warn : [ 310.249721] netlink_sendmsg+0x24f/0x480 kern :warn : [ 310.255048] sock_sendmsg+0x5e/0x60 kern :warn : [ 310.259910] ____sys_sendmsg+0x1f6/0x260 kern :warn : [ 310.265207] ? copy_msghdr_from_user+0x5c/0xa0 kern :warn : [ 310.271035] ___sys_sendmsg+0x81/0xc0 kern :warn : [ 310.276081] ? lock_acquire+0xaf/0x380 kern :warn : [ 310.281224] ? find_held_lock+0x2b/0x80 kern :warn : [ 310.286438] ? __might_fault+0x36/0x80 kern :warn : [ 310.291566] ? _copy_to_user+0x69/0x80 kern :warn : [ 310.296684] ? move_addr_to_user+0xc3/0x100 kern :warn : [ 310.302249] __sys_sendmsg+0x59/0xa0 kern :warn : [ 310.307188] ? lockdep_hardirqs_on+0x7d/0x100 kern :warn : [ 310.312911] do_syscall_64+0x33/0x40 kern :warn : [ 310.317857] entry_SYSCALL_64_after_hwframe+0x44/0xa9 kern :warn : [ 310.324292] RIP: 0033:0x7fc920c9e914 kern :warn : [ 310.329272] Code: 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b5 0f 1f 80 00 00 00 00 48 8d 05 e9 5d 0c 00 8b 00 85 c0 75 13 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 41 54 41 89 d4 55 48 89 f5 53 kern :warn : [ 310.351209] RSP: 002b:00007fff0c088ff8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e kern :warn : [ 310.360381] RAX: ffffffffffffffda RBX: 000000005f6a1c6c RCX: 00007fc920c9e914 kern :warn : [ 310.369104] RDX: 0000000000000000 RSI: 00007fff0c089060 RDI: 0000000000000006 kern :warn : [ 310.377830] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000006 kern :warn : [ 310.386538] R10: fffffffffffff1f9 R11: 0000000000000246 R12: 0000000000000001 kern :warn : [ 310.395277] R13: 00007fff0c089140 R14: 00007fff0c08b436 R15: 00007fff0c08b445 user :notice: [ 332.480919] # PASS: ping to .254 bypassed ipsec tunnel (exceptions and block policies after hresh changes) user :notice: [ 332.549293] # PASS: direct policy matches (exceptions and block policies after hresh changes) user :notice: [ 332.617915] # PASS: policy matches (exceptions and block policies after hresh changes) To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Thanks, lkp

1 year, 10 months

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Re: [mm/debug_vm_pgtable/locks] e2aad6f1d2: BUG:unable_to_handle_page_fault_for_address

by Anshuman Khandual

On 09/22/2020 02:50 PM, Aneesh Kumar K.V wrote: > On 9/22/20 2:22 PM, Anshuman Khandual wrote: >> >> >> On 09/22/2020 09:33 AM, Aneesh Kumar K.V wrote: >>> On 9/21/20 2:51 PM, kernel test robot wrote: >>>> Greeting, >>>> >>>> FYI, we noticed the following commit (built with gcc-9): >>>> >>>> commit: e2aad6f1d232b457ea6a3194992dd4c0a83534a5 ("mm/debug_vm_pgtable/locks: take correct page table lock") >>>> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master >>>> >>>> >>>> in testcase: trinity >>>> version: trinity-i386 >>>> with following parameters: >>>> >>>> ï¿½ï¿½ï¿½ï¿½runtime: 300s >>>> >>>> test-description: Trinity is a linux system call fuzz tester. >>>> test-url: http://codemonkey.org.uk/projects/trinity/ >>>> >>>> >>>> on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 8G >>>> >>>> caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): >>>> >>>> >>>> +----------------------------------------------------------------------+------------+------------+ >>>> |ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | c50eb1ed65 | e2aad6f1d2 | >>>> +----------------------------------------------------------------------+------------+------------+ >>>> | boot_successesï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | 0ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | 0ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | >>>> | boot_failuresï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | 61ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | 17ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | >>>> | BUG:workqueue_lockup-poolï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | 1ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ |ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | >>>> | BUG:sleeping_function_called_from_invalid_context_at_mm/page_alloc.c | 60ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | 17ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | >>>> | BUG:unable_to_handle_page_fault_for_addressï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | 0ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | 17ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | >>>> | Oops:#[##]ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | 0ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | 17ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | >>>> | EIP:ptep_getï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | 0ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | 17ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | >>>> | Kernel_panic-not_syncing:Fatal_exceptionï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | 0ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | 17ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ | >>>> +----------------------------------------------------------------------+------------+------------+ >>>> >>>> >>>> If you fix the issue, kindly add following tag >>>> Reported-by: kernel test robot <rong.a.chen(a)intel.com> >>>> >>>> >>>> [ï¿½ï¿½ 28.726464] BUG: sleeping function called from invalid context at mm/page_alloc.c:4822 >>>> [ï¿½ï¿½ 28.727835] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1, name: swapper >>>> [ï¿½ï¿½ 28.729221] no locks held by swapper/1. >>>> [ï¿½ï¿½ 28.729954] CPU: 0 PID: 1 Comm: swapper Not tainted 5.9.0-rc3-00324-ge2aad6f1d232b4 #1 >>>> [ï¿½ï¿½ 28.731484] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 >>>> [ï¿½ï¿½ 28.732891] Call Trace: >>>> [ï¿½ï¿½ 28.733295]ï¿½ ? show_stack+0x48/0x50 >>>> [ï¿½ï¿½ 28.733943]ï¿½ dump_stack+0x1b/0x1d >>>> [ï¿½ï¿½ 28.734569]ï¿½ ___might_sleep+0x205/0x219 >>>> [ï¿½ï¿½ 28.735292]ï¿½ __might_sleep+0x106/0x10f >>>> [ï¿½ï¿½ 28.736022]ï¿½ __alloc_pages_nodemask+0xe0/0x2c8 >>>> [ï¿½ï¿½ 28.736845]ï¿½ swap_migration_tests+0x62/0x295 >>>> [ï¿½ï¿½ 28.737639]ï¿½ debug_vm_pgtable+0x587/0x9b5 >>>> [ï¿½ï¿½ 28.738374]ï¿½ ? pte_advanced_tests+0x267/0x267 >>>> [ï¿½ï¿½ 28.739318]ï¿½ do_one_initcall+0x129/0x31c >>>> [ï¿½ï¿½ 28.740023]ï¿½ ? rcu_read_lock_sched_held+0x46/0x74 >>>> [ï¿½ï¿½ 28.740944]ï¿½ kernel_init_freeable+0x201/0x250 >>>> [ï¿½ï¿½ 28.741763]ï¿½ ? rest_init+0xf8/0xf8 >>>> [ï¿½ï¿½ 28.742401]ï¿½ kernel_init+0xe/0x15d >>>> [ï¿½ï¿½ 28.743040]ï¿½ ? rest_init+0xf8/0xf8 >>>> [ï¿½ï¿½ 28.743694]ï¿½ ret_from_fork+0x1c/0x30 >>> >>> >>> This should be fixed by >>> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... >>> >>>> [ï¿½ï¿½ 28.744364] BUG: unable to handle page fault for address: fffbbea4 >>>> [ï¿½ï¿½ 28.745465] #PF: supervisor read access in kernel mode >>>> [ï¿½ï¿½ 28.746373] #PF: error_code(0x0000) - not-present page >>>> [ï¿½ï¿½ 28.747275] *pde = 0492b067 *pte = 00000000 >>>> [ï¿½ï¿½ 28.748054] Oops: 0000 [#1] >>>> [ï¿½ï¿½ 28.748548] CPU: 0 PID: 1 Comm: swapper Tainted: Gï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ Wï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ 5.9.0-rc3-00324-ge2aad6f1d232b4 #1 >>>> [ï¿½ï¿½ 28.750188] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 >>>> [ï¿½ï¿½ 28.751641] EIP: ptep_get+0x0/0x3 >>>> [ï¿½ï¿½ 28.752226] Code: 5d fc c9 c3 55 c1 e8 1a 89 e5 53 31 db 83 f8 1f 6a 00 0f 94 c3 b8 80 67 02 c4 31 c9 89 da e8 16 5c f1 ff 89 d8 8b 5d fc c9 c3 <8b> 00 c3 55 31 c9 89 e5 57 56 53 8b 70 04 89 c3 b8 10 68 02 c4 6a >>>> [ï¿½ï¿½ 28.755465] EAX: fffbbea4 EBX: fffbbea4 ECX: 000047bd EDX: fffbbea4 >>>> [ï¿½ï¿½ 28.756418] ESI: 000047bd EDI: 00000025 EBP: f406bed8 ESP: f406bebc >>>> [ï¿½ï¿½ 28.757522] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010286 >>>> [ï¿½ï¿½ 28.758739] CR0: 80050033 CR2: fffbbea4 CR3: 04928000 CR4: 000406d0 >>>> [ï¿½ï¿½ 28.759828] Call Trace: >>>> [ï¿½ï¿½ 28.760235]ï¿½ ? hugetlb_advanced_tests+0x2a/0x27f >>>> [ï¿½ï¿½ 28.761099]ï¿½ ? do_raw_spin_unlock+0xd7/0x112 >>>> [ï¿½ï¿½ 28.761872]ï¿½ debug_vm_pgtable+0x927/0x9b5 >>>> [ï¿½ï¿½ 28.762578]ï¿½ ? pte_advanced_tests+0x267/0x267 >>>> [ï¿½ï¿½ 28.763462]ï¿½ do_one_initcall+0x129/0x31c >>>> [ï¿½ï¿½ 28.764134]ï¿½ ? rcu_read_lock_sched_held+0x46/0x74 >>>> [ï¿½ï¿½ 28.764948]ï¿½ kernel_init_freeable+0x201/0x250 >>>> [ï¿½ï¿½ 28.765654]ï¿½ ? rest_init+0xf8/0xf8 >>>> [ï¿½ï¿½ 28.766277]ï¿½ kernel_init+0xe/0x15d >>>> [ï¿½ï¿½ 28.766878]ï¿½ ? rest_init+0xf8/0xf8 >>>> [ï¿½ï¿½ 28.767488]ï¿½ ret_from_fork+0x1c/0x30 >>>> [ï¿½ï¿½ 28.768052] Modules linked in: >>>> [ï¿½ï¿½ 28.768532] CR2: 00000000fffbbea4 >>>> [ï¿½ï¿½ 28.769065] ---[ end trace 9c4395cf49c7b3e7 ]--- >>>> >>> >>> IIUC, Anshuman is reworking the test to follow the page table update rules. >> >> The failure here has been attributed to this particular patch, and >> IIRC we did not see this particular failure before this series. >> > > IIUC that crash is because the usage of pte_t pointer. With highmem that address is unmapped earlier with the series as expected. But hugetlb_advanced_test is wrongly using that pointer instead of using a pte_t * that should be allocated by huge_pte_alloc(). Hence, now it does not really make sense to keep hugetlb_advanced_test() test and create this regression on i386. Will probably send a patch to drop this test altogether for now.

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[x86/copy_mc] a0ac629ebe: fio.read_iops -43.3% regression

by kernel test robot

Greeting, FYI, we noticed a -43.3% regression of fio.read_iops due to commit: commit: a0ac629ebe7b3d248cb93807782a00d9142fdb98 ("x86/copy_mc: Introduce copy_mc_generic()") url: https://github.com/0day-ci/linux/commits/Dan-Williams/Renovate-memcpy_mcs... in testcase: fio-basic on test machine: 96 threads Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 256G memory with following parameters: disk: 2pmem fs: xfs mount_option: dax runtime: 200s nr_task: 50% time_based: tb rw: read bs: 2M ioengine: libaio test_size: 200G cpufreq_governor: performance ucode: 0x5002f01 test-description: Fio is a tool that will spawn a number of threads or processes doing a particular type of I/O action as specified by the user. test-url: https://github.com/axboe/fio In addition to that, the commit also has significant impact on the following tests: +------------------+----------------------------------------------------------------------+ | testcase: change | fio-basic: fio.read_iops -55.6% regression | | test machine | 96 threads Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 256G memory | | test parameters | bs=2M | | | cpufreq_governor=performance | | | disk=2pmem | | | fs=xfs | | | ioengine=sync | | | mount_option=dax | | | nr_task=50% | | | runtime=200s | | | rw=read | | | test_size=200G | | | time_based=tb | | | ucode=0x5002f01 | +------------------+----------------------------------------------------------------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot <rong.a.chen(a)intel.com> Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml ========================================================================================= bs/compiler/cpufreq_governor/disk/fs/ioengine/kconfig/mount_option/nr_task/rootfs/runtime/rw/tbox_group/test_size/testcase/time_based/ucode: 2M/gcc-9/performance/2pmem/xfs/libaio/x86_64-rhel-8.3/dax/50%/debian-10.4-x86_64-20200603.cgz/200s/read/lkp-csl-2sp6/200G/fio-basic/tb/0x5002f01 commit: 7476b91d4d ("x86, powerpc: Rename memcpy_mcsafe() to copy_mc_to_{user, kernel}()") a0ac629ebe ("x86/copy_mc: Introduce copy_mc_generic()") 7476b91d4db369d8 a0ac629ebe7b3d248cb93807782 ---------------- --------------------------- %stddev %change %stddev \ | \ 97.22 -96.0 1.19 ± 21% fio.latency_100ms% 0.14 -0.1 0.05 fio.latency_10ms% 0.27 ± 13% -0.1 0.14 fio.latency_20ms% 0.04 ± 6% -0.0 0.03 ± 12% fio.latency_20us% 1.00 ± 28% +96.6 97.57 fio.latency_250ms% 0.05 -0.0 0.05 fio.latency_4ms% 0.02 ± 48% +0.3 0.31 ± 15% fio.latency_500ms% 1.25 ± 47% -0.6 0.63 ± 11% fio.latency_50ms% 0.01 ± 9% +0.0 0.02 ± 24% fio.latency_50us% 44292 -43.3% 25124 fio.read_bw_MBps 67895296 +76.8% 1.201e+08 fio.read_clat_90%_us 68681728 +76.7% 1.214e+08 fio.read_clat_95%_us 98304000 ± 19% +80.3% 1.772e+08 ± 4% fio.read_clat_99%_us 66674508 +76.2% 1.175e+08 fio.read_clat_mean_us 9950116 ± 12% +80.3% 17935634 fio.read_clat_stddev 22146 -43.3% 12562 fio.read_iops 2152824 +76.8% 3805428 fio.read_slat_mean_us 291719 ± 14% +86.6% 544324 fio.read_slat_stddev 12923 -2.5% 12594 fio.time.involuntary_context_switches 77.65 ± 3% -39.1% 47.29 fio.time.user_time 4429275 -43.3% 2512537 fio.workload 0.14 ± 3% +0.0 0.16 ± 4% mpstat.cpu.all.soft% 0.47 ± 3% -0.2 0.31 mpstat.cpu.all.usr% 53185 ± 91% +121.2% 117642 ± 40% numa-vmstat.node0.numa_other 122640 ± 39% -52.6% 58092 ± 81% numa-vmstat.node1.numa_other 60096 +1.5% 61021 proc-vmstat.nr_slab_unreclaimable 20103 ± 5% -17.9% 16495 ± 12% proc-vmstat.pgactivate 49.00 -2.0% 48.00 vmstat.cpu.id 1612 -1.6% 1587 vmstat.system.cs 2713 ± 4% +8.0% 2931 ± 4% slabinfo.PING.active_objs 2713 ± 4% +8.0% 2931 ± 4% slabinfo.PING.num_objs 1164 ± 9% +16.8% 1360 ± 6% slabinfo.task_group.active_objs 1164 ± 9% +16.8% 1360 ± 6% slabinfo.task_group.num_objs 379.25 ± 85% +279.7% 1439 ± 75% sched_debug.cfs_rq:/.exec_clock.min 29948 ± 5% -15.5% 25309 ± 5% sched_debug.cfs_rq:/.exec_clock.stddev 21606 ± 7% +25.1% 27034 ± 7% sched_debug.cfs_rq:/.min_vruntime.min 33321 ± 6% -16.5% 27820 ± 6% sched_debug.cfs_rq:/.min_vruntime.stddev 13783 ±109% +184.1% 39158 ± 20% sched_debug.cfs_rq:/.spread0.avg -38497 -76.6% -9012 sched_debug.cfs_rq:/.spread0.min 33321 ± 6% -16.5% 27820 ± 6% sched_debug.cfs_rq:/.spread0.stddev 12.22 ± 10% +27.9% 15.62 ± 3% sched_debug.cpu.clock.stddev 3716 ±173% -100.0% 1.50 ± 57% softirqs.CPU10.NET_RX 17411 ± 36% -41.8% 10126 ± 19% softirqs.CPU24.SCHED 9179 ± 67% +87.1% 17173 ± 23% softirqs.CPU35.SCHED 9611 ± 34% -58.9% 3951 ± 10% softirqs.CPU48.SCHED 17177 ± 30% -42.6% 9864 ± 37% softirqs.CPU69.SCHED 86644 ± 29% -22.3% 67339 ± 5% softirqs.CPU76.TIMER 6339 ± 66% +115.9% 13686 ± 31% softirqs.CPU78.SCHED 10156 ± 64% +91.8% 19477 ± 25% softirqs.CPU81.SCHED 1239 ±172% -100.0% 0.00 interrupts.62:PCI-MSI.31981595-edge.i40e-eth0-TxRx-26 47482 +5.4% 50055 ± 4% interrupts.CAL:Function_call_interrupts 209.00 ± 23% -50.4% 103.75 ± 8% interrupts.CPU0.RES:Rescheduling_interrupts 146.25 ± 16% -27.4% 106.25 ± 16% interrupts.CPU15.RES:Rescheduling_interrupts 168.75 ± 81% -64.6% 59.75 ± 33% interrupts.CPU15.TLB:TLB_shootdowns 7321 ± 5% -52.7% 3461 ± 39% interrupts.CPU20.NMI:Non-maskable_interrupts 7321 ± 5% -52.7% 3461 ± 39% interrupts.CPU20.PMI:Performance_monitoring_interrupts 6665 ± 14% -61.2% 2586 ± 26% interrupts.CPU21.NMI:Non-maskable_interrupts 6665 ± 14% -61.2% 2586 ± 26% interrupts.CPU21.PMI:Performance_monitoring_interrupts 64.50 ± 23% +41.9% 91.50 ± 22% interrupts.CPU21.TLB:TLB_shootdowns 100.00 ± 41% +66.0% 166.00 ± 9% interrupts.CPU24.RES:Rescheduling_interrupts 1238 ±173% -100.0% 0.00 interrupts.CPU26.62:PCI-MSI.31981595-edge.i40e-eth0-TxRx-26 438.25 ± 4% +16.1% 509.00 ± 18% interrupts.CPU28.CAL:Function_call_interrupts 145.50 ± 20% -34.4% 95.50 ± 25% interrupts.CPU35.RES:Rescheduling_interrupts 7134 ± 11% -28.3% 5118 ± 19% interrupts.CPU41.NMI:Non-maskable_interrupts 7134 ± 11% -28.3% 5118 ± 19% interrupts.CPU41.PMI:Performance_monitoring_interrupts 107.75 ± 34% -47.3% 56.75 ± 40% interrupts.CPU93.RES:Rescheduling_interrupts 63.18 ± 12% -26.1 37.12 ± 15% perf-profile.calltrace.cycles-pp.copy_mc_fragile.copy_mc_to_user.copyout_mc._copy_mc_to_iter.dax_iomap_actor 0.00 +3.7 3.72 ± 52% perf-profile.calltrace.cycles-pp.copy_mc_generic.copy_mc_to_user.copyout_mc._copy_mc_to_iter.dax_iomap_actor 0.00 +37.8 37.83 ± 12% perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.copy_mc_generic.copy_mc_to_user.copyout_mc._copy_mc_to_iter 63.34 ± 12% -26.2 37.14 ± 15% perf-profile.children.cycles-pp.copy_mc_fragile 2.41 ±112% -2.2 0.25 ±108% perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt 2.26 ±109% -2.0 0.29 ± 89% perf-profile.children.cycles-pp.asm_call_on_stack 2.15 ±112% -1.9 0.23 ±110% perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt 2.12 ±113% -1.9 0.23 ±110% perf-profile.children.cycles-pp.hrtimer_interrupt 1.68 ±114% -1.5 0.17 ±119% perf-profile.children.cycles-pp.__hrtimer_run_queues 1.48 ±123% -1.3 0.15 ±121% perf-profile.children.cycles-pp.tick_sched_timer 1.34 ±120% -1.2 0.14 ±122% perf-profile.children.cycles-pp.tick_sched_handle 1.28 ±119% -1.1 0.14 ±122% perf-profile.children.cycles-pp.update_process_times 0.70 ±107% -0.6 0.10 ±120% perf-profile.children.cycles-pp.scheduler_tick 2.65 ±106% +16.5 19.13 ± 12% perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt 0.00 +22.6 22.58 ± 7% perf-profile.children.cycles-pp.copy_mc_generic 62.52 ± 12% -25.5 37.00 ± 15% perf-profile.self.cycles-pp.copy_mc_fragile 0.00 +22.4 22.41 ± 6% perf-profile.self.cycles-pp.copy_mc_generic 42.43 +68.7% 71.58 perf-stat.i.MPKI 5.949e+09 -42.2% 3.44e+09 perf-stat.i.branch-instructions 0.07 +0.0 0.10 ± 5% perf-stat.i.branch-miss-rate% 3554006 ± 2% -7.5% 3286479 ± 3% perf-stat.i.branch-misses 95.02 -2.4 92.63 perf-stat.i.cache-miss-rate% 1.444e+09 -5.2% 1.369e+09 perf-stat.i.cache-misses 1.513e+09 -2.8% 1.471e+09 perf-stat.i.cache-references 3.81 +72.5% 6.58 perf-stat.i.cpi 102.49 +4.5% 107.13 perf-stat.i.cycles-between-cache-misses 0.00 ± 4% +0.0 0.00 ± 41% perf-stat.i.dTLB-load-miss-rate% 6.03e+09 -42.0% 3.495e+09 perf-stat.i.dTLB-loads 0.00 ± 5% +0.0 0.00 ± 7% perf-stat.i.dTLB-store-miss-rate% 5.909e+09 -42.5% 3.4e+09 perf-stat.i.dTLB-stores 47.00 +1.4 48.45 perf-stat.i.iTLB-load-miss-rate% 2270674 -11.0% 2021114 perf-stat.i.iTLB-load-misses 2563127 -16.0% 2151931 perf-stat.i.iTLB-loads 3.548e+10 -42.4% 2.044e+10 perf-stat.i.instructions 15634 -35.2% 10127 perf-stat.i.instructions-per-iTLB-miss 0.26 -41.6% 0.15 perf-stat.i.ipc 207.77 -37.5% 129.85 perf-stat.i.metric.M/sec 78061415 ± 13% +98.0% 1.546e+08 ± 20% perf-stat.i.node-load-misses 85582855 ± 11% +58.1% 1.353e+08 ± 20% perf-stat.i.node-loads 3.817e+08 -2.8% 3.709e+08 perf-stat.i.node-stores 42.66 +68.7% 71.96 perf-stat.overall.MPKI 0.06 +0.0 0.09 ± 3% perf-stat.overall.branch-miss-rate% 95.45 -2.4 93.07 perf-stat.overall.cache-miss-rate% 3.81 +73.0% 6.59 perf-stat.overall.cpi 93.55 +5.2% 98.41 perf-stat.overall.cycles-between-cache-misses 0.00 ± 5% +0.0 0.00 ± 13% perf-stat.overall.dTLB-load-miss-rate% 0.00 ± 5% +0.0 0.00 ± 2% perf-stat.overall.dTLB-store-miss-rate% 46.98 +1.5 48.43 perf-stat.overall.iTLB-load-miss-rate% 15639 -35.2% 10127 perf-stat.overall.instructions-per-iTLB-miss 0.26 -42.2% 0.15 perf-stat.overall.ipc 1605743 +1.5% 1630326 perf-stat.overall.path-length 5.919e+09 -42.2% 3.422e+09 perf-stat.ps.branch-instructions 3519866 ± 2% -7.8% 3245208 ± 3% perf-stat.ps.branch-misses 1.437e+09 -5.2% 1.362e+09 perf-stat.ps.cache-misses 1.506e+09 -2.8% 1.463e+09 perf-stat.ps.cache-references 1552 -1.4% 1530 perf-stat.ps.context-switches 6e+09 -42.1% 3.477e+09 perf-stat.ps.dTLB-loads 5.88e+09 -42.5% 3.382e+09 perf-stat.ps.dTLB-stores 2257568 -11.0% 2008542 perf-stat.ps.iTLB-load-misses 2547705 -16.1% 2138603 perf-stat.ps.iTLB-loads 3.53e+10 -42.4% 2.034e+10 perf-stat.ps.instructions 77685715 ± 13% +97.9% 1.538e+08 ± 20% perf-stat.ps.node-load-misses 85143339 ± 11% +58.1% 1.346e+08 ± 20% perf-stat.ps.node-loads 3.797e+08 -2.8% 3.69e+08 perf-stat.ps.node-stores 7.112e+12 -42.4% 4.096e+12 perf-stat.total.instructions fio.read_bw_MBps 46000 +-------------------------------------------------------------------+ 44000 |..+.+..+.+..+..+.+..+..+.+.. .+.. .+.+..+.+..+ | | + +. | 42000 |-+ | 40000 |-+ | 38000 |-+ | 36000 |-+ | | | 34000 |-+ | 32000 |-+ | 30000 |-+ | 28000 |-+ | | | 26000 |-+O O O O O O O O O O O O O O O O O O O O O O O O O | 24000 +-------------------------------------------------------------------+ fio.read_iops 23000 +-------------------------------------------------------------------+ 22000 |..+.+..+.+..+..+.+..+..+.+.. .+.. .+.+..+.+..+ | | + +. | 21000 |-+ | 20000 |-+ | 19000 |-+ | 18000 |-+ | | | 17000 |-+ | 16000 |-+ | 15000 |-+ | 14000 |-+ | | | 13000 |-+O O O O O O O O O O O O O O O O O O O O O O O O O | 12000 +-------------------------------------------------------------------+ fio.read_clat_mean_us 1.2e+08 +-----------------------------------------------------------------+ | O O O O O O O O O O O O O O O O O O O O O O O O | 1.1e+08 |-+ | | | | | 1e+08 |-+ | | | 9e+07 |-+ | | | 8e+07 |-+ | | | | | 7e+07 |..+.+.. .+..+. .+..+.+..+..+.+..+.+.. | | +.+..+ +..+ + | 6e+07 +-----------------------------------------------------------------+ fio.read_clat_90__us 1.3e+08 +-----------------------------------------------------------------+ | | 1.2e+08 |-+O O O O O O O O O O O O O O O O O O O O O O O O O | | | 1.1e+08 |-+ | | | 1e+08 |-+ | | | 9e+07 |-+ | | | 8e+07 |-+ | | | 7e+07 |..+.+..+.+..+.+..+.+..+.+..+.+..+..+.+..+.+..+ | | | 6e+07 +-----------------------------------------------------------------+ fio.read_clat_95__us 1.3e+08 +-----------------------------------------------------------------+ | O O O O O | 1.2e+08 |-+O O O O O O O O O O O O O O O O O O O O | | | 1.1e+08 |-+ | | | 1e+08 |-+ | | | 9e+07 |-+ | | | 8e+07 |-+ | | .+. .+.. | 7e+07 |..+.+..+.+..+.+..+.+..+.+. +. +.+..+.+..+ | | | 6e+07 +-----------------------------------------------------------------+ fio.read_slat_mean_us 4e+06 +-----------------------------------------------------------------+ 3.8e+06 |-+O O O O O O O O O O O O O O O O O O O O O O O O O | | | 3.6e+06 |-+ | 3.4e+06 |-+ | | | 3.2e+06 |-+ | 3e+06 |-+ | 2.8e+06 |-+ | | | 2.6e+06 |-+ | 2.4e+06 |-+ | | | 2.2e+06 |..+.+..+.+..+.+..+.+..+.+..+.+..+..+.+..+.+..+ | 2e+06 +-----------------------------------------------------------------+ fio.latency_10ms_ 0.15 +--------------------------------------------------------------------+ 0.14 |..+.+..+..+.+..+..+.+..+..+.+..+..+.+..+.+..+..+ | | | 0.13 |-+ | 0.12 |-+ | 0.11 |-+ | 0.1 |-+ | | | 0.09 |-+ | 0.08 |-+ | 0.07 |-+ | 0.06 |-+ | | | 0.05 |-+O O O O O O O O O O O O O O O O O O O O O O O O O | 0.04 +--------------------------------------------------------------------+ fio.latency_20ms_ 0.55 +--------------------------------------------------------------------+ | + + + | 0.5 |-+ : + + :: | 0.45 |++ : + + + : : | | + : + + : | 0.4 |-+ : : : : : | 0.35 |-+ : : : : : | | : : : : : + | 0.3 |-+ : : : +. : + + | 0.25 |-+ : : .. +.. : + + | | + +..+ +..+ +..+ | 0.2 |-+ | 0.15 |-+ | | O O O O O O O O O O O O O O O O O O O O O O O O O | 0.1 +--------------------------------------------------------------------+ fio.latency_100ms_ 100 +---------------------------------------------------------------------+ 90 |-+ + +.+..+..+ +. | | | 80 |-+ | 70 |-+ | | | 60 |-+ | 50 |-+ | 40 |-+ | | | 30 |-+ | 20 |-+ | | | 10 |-+ | 0 +---------------------------------------------------------------------+ fio.latency_250ms_ 100 +---------------------------------------------------------------------+ 90 |-+ O | | | 80 |-+ | 70 |-+ | | | 60 |-+ | 50 |-+ | 40 |-+ | | | 30 |-+ | 20 |-+ | | | 10 |-+ | 0 +---------------------------------------------------------------------+ fio.workload 4.6e+06 +-----------------------------------------------------------------+ 4.4e+06 |..+.+..+.+..+.+..+.+..+.+.. .+.. .+.+..+.+..+ | | + +. | 4.2e+06 |-+ | 4e+06 |-+ | 3.8e+06 |-+ | 3.6e+06 |-+ | | | 3.4e+06 |-+ | 3.2e+06 |-+ | 3e+06 |-+ | 2.8e+06 |-+ | | | 2.6e+06 |-+O O O O O O O O O O O O O O O O O O O O O O O O O | 2.4e+06 +-----------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample *************************************************************************************************** lkp-csl-2sp6: 96 threads Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 256G memory ========================================================================================= bs/compiler/cpufreq_governor/disk/fs/ioengine/kconfig/mount_option/nr_task/rootfs/runtime/rw/tbox_group/test_size/testcase/time_based/ucode: 2M/gcc-9/performance/2pmem/xfs/sync/x86_64-rhel-8.3/dax/50%/debian-10.4-x86_64-20200603.cgz/200s/read/lkp-csl-2sp6/200G/fio-basic/tb/0x5002f01 commit: 7476b91d4d ("x86, powerpc: Rename memcpy_mcsafe() to copy_mc_to_{user, kernel}()") a0ac629ebe ("x86/copy_mc: Introduce copy_mc_generic()") 7476b91d4db369d8 a0ac629ebe7b3d248cb93807782 ---------------- --------------------------- %stddev %change %stddev \ | \ 0.61 ± 15% -0.4 0.22 ± 94% fio.latency_1000us% 0.01 ± 11% +1.3 1.27 ± 25% fio.latency_10ms% 96.06 -95.5 0.60 ± 80% fio.latency_2ms% 1.27 ± 33% +96.2 97.48 fio.latency_4ms% 1.29 ± 55% -1.2 0.05 ± 54% fio.latency_500us% 75143 -55.6% 33381 fio.read_bw_MBps 1372160 +118.5% 2998272 fio.read_clat_90%_us 1409024 +116.9% 3055616 fio.read_clat_95%_us 2142208 ± 19% +120.3% 4718592 ± 17% fio.read_clat_99%_us 1272849 +125.4% 2869293 fio.read_clat_mean_us 228201 ± 15% +103.6% 464620 ± 14% fio.read_clat_stddev 37571 -55.6% 16690 fio.read_iops 69.28 ± 2% -40.3% 41.38 ± 3% fio.time.user_time 7514438 -55.6% 3338252 fio.workload 0.11 ± 3% +0.0 0.14 ± 5% mpstat.cpu.all.soft% 0.43 ± 3% -0.1 0.28 ± 2% mpstat.cpu.all.usr% 115069 -2.3% 112454 proc-vmstat.nr_shmem 20846 ± 6% -27.8% 15052 ± 3% proc-vmstat.pgactivate 967.50 ± 27% -50.0% 483.75 ± 78% slabinfo.xfs_buf_item.active_objs 967.50 ± 27% -50.0% 483.75 ± 78% slabinfo.xfs_buf_item.num_objs 100.00 -2.0% 98.00 vmstat.io.bo 1672 -3.3% 1616 vmstat.system.cs 9.059e+09 ± 6% -32.3% 6.131e+09 ± 54% cpuidle.C1E.time 19004364 ± 3% -22.4% 14741281 ± 34% cpuidle.C1E.usage 4.034e+08 ±133% +713.0% 3.28e+09 ±100% cpuidle.C6.time 570211 ±122% +571.6% 3829822 ± 86% cpuidle.C6.usage 61.80 ± 9% -17.6 44.19 perf-profile.calltrace.cycles-pp.copy_mc_fragile.copy_mc_to_user.copyout_mc._copy_mc_to_iter.dax_iomap_actor 0.00 +7.8 7.81 ± 6% perf-profile.calltrace.cycles-pp.copy_mc_generic.copy_mc_to_user.copyout_mc._copy_mc_to_iter.dax_iomap_actor 0.00 +29.2 29.21 ± 5% perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.copy_mc_generic.copy_mc_to_user.copyout_mc._copy_mc_to_iter 61.92 ± 9% -17.7 44.25 perf-profile.children.cycles-pp.copy_mc_fragile 3.47 ±132% +11.7 15.21 ± 5% perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt 0.00 +22.3 22.32 perf-profile.children.cycles-pp.copy_mc_generic 61.16 ± 9% -17.4 43.78 perf-profile.self.cycles-pp.copy_mc_fragile 0.00 +22.1 22.09 perf-profile.self.cycles-pp.copy_mc_generic 212.00 ± 38% +288.6% 823.90 ± 67% sched_debug.cfs_rq:/.exec_clock.min 34013 ± 3% -17.1% 28181 ± 2% sched_debug.cfs_rq:/.exec_clock.stddev 36118 ± 5% -15.0% 30710 ± 2% sched_debug.cfs_rq:/.min_vruntime.stddev 36118 ± 5% -15.0% 30707 ± 2% sched_debug.cfs_rq:/.spread0.stddev 9.52 ± 11% +33.8% 12.73 ± 9% sched_debug.cpu.clock.stddev 17832 ± 13% -47.5% 9368 ± 17% sched_debug.cpu.sched_count.max 2475 ± 9% -34.4% 1624 ± 8% sched_debug.cpu.sched_count.stddev 8858 ± 13% -48.3% 4577 ± 18% sched_debug.cpu.sched_goidle.max 1260 ± 9% -33.2% 841.68 ± 8% sched_debug.cpu.sched_goidle.stddev 8285 ± 16% -32.1% 5622 ± 7% sched_debug.cpu.ttwu_count.max 1169 ± 9% -24.9% 878.40 ± 4% sched_debug.cpu.ttwu_count.stddev 26587 ± 8% -21.9% 20773 ± 22% softirqs.CPU1.SCHED 19906 ± 37% -55.7% 8824 ± 96% softirqs.CPU10.SCHED 21997 ± 34% -82.2% 3910 ± 55% softirqs.CPU20.SCHED 5126 ± 70% +166.6% 13666 ± 15% softirqs.CPU30.SCHED 5567 ± 56% +165.3% 14772 ± 29% softirqs.CPU31.SCHED 10027 ± 35% +101.3% 20182 ± 18% softirqs.CPU33.SCHED 4868 ± 50% +112.6% 10349 ± 14% softirqs.CPU44.SCHED 6304 ± 60% +154.5% 16043 ± 22% softirqs.CPU46.SCHED 4127 ± 76% +198.6% 12326 ± 32% softirqs.CPU49.SCHED 6313 ± 62% +98.5% 12530 ± 19% softirqs.CPU51.SCHED 8249 ± 58% +148.7% 20515 ± 31% softirqs.CPU57.SCHED 6971 ±109% +268.6% 25698 ± 8% softirqs.CPU68.SCHED 25116 ± 15% -32.4% 16974 ± 12% softirqs.CPU78.SCHED 24757 ± 12% -36.8% 15657 ± 27% softirqs.CPU79.SCHED 20231 ± 14% -45.5% 11024 ± 24% softirqs.CPU81.SCHED 21830 ± 23% -55.4% 9733 ± 67% softirqs.CPU9.SCHED 24043 ± 16% -39.9% 14449 ± 23% softirqs.CPU94.SCHED 42.31 +68.3% 71.22 perf-stat.i.MPKI 9.958e+09 -54.7% 4.511e+09 perf-stat.i.branch-instructions 0.05 ± 2% +0.0 0.08 ± 4% perf-stat.i.branch-miss-rate% 3682118 ± 2% -8.2% 3381534 perf-stat.i.branch-misses 67.34 +10.4 77.74 perf-stat.i.cache-miss-rate% 1.709e+09 -12.2% 1.501e+09 perf-stat.i.cache-misses 2.531e+09 -24.0% 1.923e+09 perf-stat.i.cache-references 1639 -4.1% 1571 perf-stat.i.context-switches 2.25 +121.4% 4.98 perf-stat.i.cpi 99.03 -1.8% 97.24 perf-stat.i.cpu-migrations 85.60 +14.2% 97.78 perf-stat.i.cycles-between-cache-misses 0.00 ± 18% +0.0 0.00 ± 44% perf-stat.i.dTLB-load-miss-rate% 9.996e+09 -54.5% 4.549e+09 perf-stat.i.dTLB-loads 0.00 ± 7% +0.0 0.00 ± 6% perf-stat.i.dTLB-store-miss-rate% 9.904e+09 -54.9% 4.466e+09 perf-stat.i.dTLB-stores 44.79 +4.2 48.99 perf-stat.i.iTLB-load-miss-rate% 2535885 -13.8% 2185118 perf-stat.i.iTLB-load-misses 3134177 -27.3% 2278467 perf-stat.i.iTLB-loads 5.952e+10 -54.9% 2.687e+10 perf-stat.i.instructions 23480 -47.6% 12304 perf-stat.i.instructions-per-iTLB-miss 0.45 -54.6% 0.20 perf-stat.i.ipc 342.39 -51.0% 167.90 perf-stat.i.metric.M/sec 1.165e+08 ± 30% +72.8% 2.013e+08 ± 9% perf-stat.i.node-load-misses 1.257e+08 ± 26% +41.1% 1.773e+08 ± 9% perf-stat.i.node-loads 2.42e+08 +19.6% 2.895e+08 perf-stat.i.node-stores 42.53 +68.3% 71.58 perf-stat.overall.MPKI 0.04 ± 2% +0.0 0.07 perf-stat.overall.branch-miss-rate% 67.52 +10.5 78.07 perf-stat.overall.cache-miss-rate% 2.24 +122.4% 4.99 perf-stat.overall.cpi 78.17 +14.3% 89.34 perf-stat.overall.cycles-between-cache-misses 0.00 ± 25% +0.0 0.00 ± 12% perf-stat.overall.dTLB-load-miss-rate% 0.00 ± 13% +0.0 0.00 ± 10% perf-stat.overall.dTLB-store-miss-rate% 44.72 +4.2 48.96 perf-stat.overall.iTLB-load-miss-rate% 23499 -47.6% 12306 perf-stat.overall.instructions-per-iTLB-miss 0.45 -55.0% 0.20 perf-stat.overall.ipc 1587395 +1.5% 1611895 perf-stat.overall.path-length 9.912e+09 -54.7% 4.489e+09 perf-stat.ps.branch-instructions 3650903 ± 2% -8.4% 3345674 perf-stat.ps.branch-misses 1.701e+09 -12.2% 1.494e+09 perf-stat.ps.cache-misses 2.52e+09 -24.1% 1.914e+09 perf-stat.ps.cache-references 1616 -3.7% 1556 perf-stat.ps.context-switches 9.95e+09 -54.5% 4.526e+09 perf-stat.ps.dTLB-loads 9.859e+09 -54.9% 4.445e+09 perf-stat.ps.dTLB-stores 2521574 -13.8% 2172342 perf-stat.ps.iTLB-load-misses 3116655 -27.3% 2264894 perf-stat.ps.iTLB-loads 5.925e+10 -54.9% 2.673e+10 perf-stat.ps.instructions 1.159e+08 ± 30% +72.8% 2.003e+08 ± 9% perf-stat.ps.node-load-misses 1.25e+08 ± 26% +41.1% 1.764e+08 ± 9% perf-stat.ps.node-loads 2.407e+08 +19.6% 2.878e+08 perf-stat.ps.node-stores 1.193e+13 -54.9% 5.381e+12 perf-stat.total.instructions 0.00 +2.7e+105% 2689 ±171% interrupts.115:PCI-MSI.31981648-edge.i40e-eth0-TxRx-79 62.75 ± 27% +51.8% 95.25 ± 21% interrupts.CPU1.RES:Rescheduling_interrupts 6530 ± 17% -44.1% 3647 ± 35% interrupts.CPU17.NMI:Non-maskable_interrupts 6530 ± 17% -44.1% 3647 ± 35% interrupts.CPU17.PMI:Performance_monitoring_interrupts 62.00 ± 74% +187.9% 178.50 ± 5% interrupts.CPU20.RES:Rescheduling_interrupts 365.00 ± 78% -76.0% 87.50 ± 53% interrupts.CPU25.TLB:TLB_shootdowns 170.50 ± 15% -26.8% 124.75 ± 10% interrupts.CPU30.RES:Rescheduling_interrupts 7605 -43.3% 4316 ± 32% interrupts.CPU31.NMI:Non-maskable_interrupts 7605 -43.3% 4316 ± 32% interrupts.CPU31.PMI:Performance_monitoring_interrupts 169.00 ± 12% -37.1% 106.25 ± 23% interrupts.CPU31.RES:Rescheduling_interrupts 7145 ± 11% -33.0% 4786 ± 18% interrupts.CPU36.NMI:Non-maskable_interrupts 7145 ± 11% -33.0% 4786 ± 18% interrupts.CPU36.PMI:Performance_monitoring_interrupts 136.50 ± 27% -44.7% 75.50 ± 60% interrupts.CPU39.TLB:TLB_shootdowns 149.25 ± 24% -24.6% 112.50 ± 30% interrupts.CPU4.RES:Rescheduling_interrupts 7599 -46.6% 4061 ± 35% interrupts.CPU41.NMI:Non-maskable_interrupts 7599 -46.6% 4061 ± 35% interrupts.CPU41.PMI:Performance_monitoring_interrupts 6661 ± 24% -52.1% 3191 ± 51% interrupts.CPU44.NMI:Non-maskable_interrupts 6661 ± 24% -52.1% 3191 ± 51% interrupts.CPU44.PMI:Performance_monitoring_interrupts 7622 -43.5% 4307 ± 33% interrupts.CPU46.NMI:Non-maskable_interrupts 7622 -43.5% 4307 ± 33% interrupts.CPU46.PMI:Performance_monitoring_interrupts 7613 -43.1% 4331 ± 31% interrupts.CPU47.NMI:Non-maskable_interrupts 7613 -43.1% 4331 ± 31% interrupts.CPU47.PMI:Performance_monitoring_interrupts 5823 ± 32% -36.4% 3703 ± 34% interrupts.CPU5.NMI:Non-maskable_interrupts 5823 ± 32% -36.4% 3703 ± 34% interrupts.CPU5.PMI:Performance_monitoring_interrupts 89.25 ± 48% -61.1% 34.75 ± 31% interrupts.CPU53.TLB:TLB_shootdowns 5698 ± 33% -42.5% 3277 ± 49% interrupts.CPU55.NMI:Non-maskable_interrupts 5698 ± 33% -42.5% 3277 ± 49% interrupts.CPU55.PMI:Performance_monitoring_interrupts 172.00 ± 14% -35.2% 111.50 ± 41% interrupts.CPU56.RES:Rescheduling_interrupts 64.00 ± 42% -39.5% 38.75 ± 29% interrupts.CPU56.TLB:TLB_shootdowns 156.00 ± 17% -36.2% 99.50 ± 21% interrupts.CPU57.RES:Rescheduling_interrupts 146.25 ± 28% -48.9% 74.75 ± 67% interrupts.CPU58.RES:Rescheduling_interrupts 7627 -47.0% 4043 ± 31% interrupts.CPU62.NMI:Non-maskable_interrupts 7627 -47.0% 4043 ± 31% interrupts.CPU62.PMI:Performance_monitoring_interrupts 174.75 ± 12% -29.9% 122.50 ± 30% interrupts.CPU62.RES:Rescheduling_interrupts 76.00 ± 29% -48.4% 39.25 ± 29% interrupts.CPU62.TLB:TLB_shootdowns 7159 ± 11% -50.2% 3564 ± 32% interrupts.CPU63.NMI:Non-maskable_interrupts 7159 ± 11% -50.2% 3564 ± 32% interrupts.CPU63.PMI:Performance_monitoring_interrupts 7628 -62.9% 2831 interrupts.CPU66.NMI:Non-maskable_interrupts 7628 -62.9% 2831 interrupts.CPU66.PMI:Performance_monitoring_interrupts 174.50 ± 10% -36.4% 111.00 ± 50% interrupts.CPU66.RES:Rescheduling_interrupts 4370 ± 18% -34.7% 2853 interrupts.CPU69.NMI:Non-maskable_interrupts 4370 ± 18% -34.7% 2853 interrupts.CPU69.PMI:Performance_monitoring_interrupts 6885 ± 18% -45.8% 3731 ± 28% interrupts.CPU74.NMI:Non-maskable_interrupts 6885 ± 18% -45.8% 3731 ± 28% interrupts.CPU74.PMI:Performance_monitoring_interrupts 5900 ± 18% -57.5% 2510 ± 24% interrupts.CPU77.NMI:Non-maskable_interrupts 5900 ± 18% -57.5% 2510 ± 24% interrupts.CPU77.PMI:Performance_monitoring_interrupts 62.00 ± 41% +58.9% 98.50 ± 14% interrupts.CPU78.RES:Rescheduling_interrupts 0.00 +2.7e+105% 2689 ±171% interrupts.CPU79.115:PCI-MSI.31981648-edge.i40e-eth0-TxRx-79 49.75 ± 47% +119.6% 109.25 ± 28% interrupts.CPU79.RES:Rescheduling_interrupts 61.50 ± 54% +115.0% 132.25 ± 31% interrupts.CPU8.RES:Rescheduling_interrupts 5871 ± 19% -38.8% 3594 ± 32% interrupts.CPU80.NMI:Non-maskable_interrupts 5871 ± 19% -38.8% 3594 ± 32% interrupts.CPU80.PMI:Performance_monitoring_interrupts 60.50 ± 19% +120.2% 133.25 ± 14% interrupts.CPU81.RES:Rescheduling_interrupts 36.00 ± 79% +179.2% 100.50 ± 35% interrupts.CPU86.RES:Rescheduling_interrupts 6322 ± 21% -60.6% 2490 ± 25% interrupts.CPU88.NMI:Non-maskable_interrupts 6322 ± 21% -60.6% 2490 ± 25% interrupts.CPU88.PMI:Performance_monitoring_interrupts 32.50 ± 40% +150.0% 81.25 ± 41% interrupts.CPU92.RES:Rescheduling_interrupts 124.00 ± 11% -22.8% 95.75 ± 4% interrupts.IWI:IRQ_work_interrupts 538989 ± 8% -28.0% 387910 ± 2% interrupts.NMI:Non-maskable_interrupts 538989 ± 8% -28.0% 387910 ± 2% interrupts.PMI:Performance_monitoring_interrupts Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Rong Chen

1 year, 10 months

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[torture] 345fdd0aab: WARNING:at_kernel/rcu/rcutorture.c:#rcu_torture_fwd_prog_nr

by kernel test robot

Greeting, FYI, we noticed the following commit (built with gcc-9): commit: 345fdd0aabfa4aaa469e782ada7c26e29dd61c7f ("torture: Make torture_stutter() use hrtimer") https://git.kernel.org/cgit/linux/kernel/git/paulmck/linux-rcu.git rcu/next in testcase: trinity version: with following parameters: runtime: 300s test-description: Trinity is a linux system call fuzz tester. test-url: http://codemonkey.org.uk/projects/trinity/ on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 8G caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +-------------------------------------------------------------+------------+------------+ | | a6afecad1b | 345fdd0aab | +-------------------------------------------------------------+------------+------------+ | boot_successes | 4 | 0 | | boot_failures | 0 | 3 | | WARNING:at_kernel/rcu/rcutorture.c:#rcu_torture_fwd_prog_nr | 0 | 3 | | EIP:rcu_torture_fwd_prog_nr | 0 | 3 | +-------------------------------------------------------------+------------+------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot <lkp(a)intel.com> [ 77.789569] WARNING: CPU: 0 PID: 124 at kernel/rcu/rcutorture.c:1951 rcu_torture_fwd_prog_nr+0x52c/0x625 [ 77.790167] Modules linked in: [ 77.790373] CPU: 0 PID: 124 Comm: rcu_torture_fwd Not tainted 5.9.0-rc1-00146-g345fdd0aabfa4 #2 [ 77.790932] EIP: rcu_torture_fwd_prog_nr+0x52c/0x625 [ 77.791253] Code: e8 42 a0 ff ff 83 05 20 eb d3 83 01 83 15 24 eb d3 83 00 85 db 75 23 83 f8 01 77 1e 83 05 28 eb d3 83 01 83 15 2c eb d3 83 00 <0f> 0b 83 05 30 eb d3 83 01 83 15 34 eb d3 83 00 50 53 ff 75 e0 68 [ 77.792425] EAX: 00000000 EBX: 00000000 ECX: 81123459 EDX: 00000000 [ 77.792824] ESI: e5955e00 EDI: ffffa8b1 EBP: efae1f74 ESP: efae1f44 [ 77.793222] DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068 EFLAGS: 00010246 [ 77.793653] CR0: 80050033 CR2: 080a2190 CR3: 6f8d6aa0 CR4: 000406b0 [ 77.794054] DR0: 76a67000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 77.794453] DR6: fffe0ff0 DR7: 00000600 [ 77.794710] Call Trace: [ 77.794880] ? rcu_torture_fwd_cb_cr+0x1d1/0x1d1 [ 77.795179] rcu_torture_fwd_prog+0xb2/0x19b [ 77.795457] kthread+0x2ce/0x2e1 [ 77.795672] ? rcu_torture_fwd_prog_nr+0x625/0x625 [ 77.795982] ? kthread_create_worker+0x38/0x38 [ 77.796269] ret_from_fork+0x19/0x24 [ 77.796503] ---[ end trace b9e70890d3ca1c49 ]--- To reproduce: # build kernel cd linux cp config-5.9.0-rc1-00146-g345fdd0aabfa4 .config make HOSTCC=gcc-9 CC=gcc-9 ARCH=i386 olddefconfig prepare modules_prepare bzImage git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email Thanks, lkp

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