Re: [LKP] [rcu] kernel BUG at include/linux/pagemap.h:149!
by Frederic Weisbecker
On Fri, Sep 11, 2015 at 10:19:47AM +0800, Boqun Feng wrote:
> Subject: [PATCH 01/27] rcu: Don't disable preemption for Tiny and Tree RCU
> readers
>
> Because preempt_disable() maps to barrier() for non-debug builds,
> it forces the compiler to spill and reload registers. Because Tree
> RCU and Tiny RCU now only appear in CONFIG_PREEMPT=n builds, these
> barrier() instances generate needless extra code for each instance of
> rcu_read_lock() and rcu_read_unlock(). This extra code slows down Tree
> RCU and bloats Tiny RCU.
>
> This commit therefore removes the preempt_disable() and preempt_enable()
> from the non-preemptible implementations of __rcu_read_lock() and
> __rcu_read_unlock(), respectively.
>
> For debug purposes, preempt_disable() and preempt_enable() are still
> kept if CONFIG_PREEMPT_COUNT=y, which makes the detection of sleeping
> inside atomic sections still work in non-preemptible kernels.
>
> Signed-off-by: Boqun Feng <boqun.feng(a)gmail.com>
> Signed-off-by: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com>
> ---
> include/linux/rcupdate.h | 6 ++++--
> include/linux/rcutiny.h | 1 +
> kernel/rcu/tree.c | 9 +++++++++
> 3 files changed, 14 insertions(+), 2 deletions(-)
>
> diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
> index d63bb77..6c3cece 100644
> --- a/include/linux/rcupdate.h
> +++ b/include/linux/rcupdate.h
> @@ -297,12 +297,14 @@ void synchronize_rcu(void);
>
> static inline void __rcu_read_lock(void)
> {
> - preempt_disable();
> + if (IS_ENABLED(CONFIG_PREEMPT_COUNT))
> + preempt_disable();
preempt_disable() is a no-op when !CONFIG_PREEMPT_COUNT, right?
Or rather it's a barrier(), which is anyway implied by rcu_read_lock().
So perhaps we can get rid of the IS_ENABLED() check?
2 years, 3 months
[lkp-robot] [uvcvideo] c698cbbd35: Failed to query (GET_INFO) UVC control 11 on unit 1: -32 (exp. 1).
by kernel test robot
FYI, we noticed the following commit:
commit: c698cbbd35daebf58ced376bb6f98dd013e6cf9e ("uvcvideo: send a control event when a Control Change interrupt arrives")
url: https://github.com/0day-ci/linux/commits/Guennadi-Liakhovetski/UVC-fix-qu...
base: git://linuxtv.org/media_tree.git master
in testcase: netperf
with following parameters:
ip: ipv4
runtime: 300s
nr_threads: 200%
cluster: cs-localhost
test: SCTP_STREAM
cpufreq_governor: performance
test-description: Netperf is a benchmark that can be use to measure various aspect of networking performance.
test-url: http://www.netperf.org/netperf/
on test machine: 4 threads Intel(R) Core(TM) i5-3317U CPU @ 1.70GHz with 4G memory
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
[ 74.743574] uvcvideo: Found UVC 1.00 device Lenovo EasyCamera (5986:0295)
[ 74.744636] uvcvideo: Failed to query (GET_INFO) UVC control 11 on unit 1: -32 (exp. 1).
[ 74.745523] input: Ideapad extra buttons as /devices/pci0000:00/0000:00:1f.0/PNP0C09:00/VPC2004:00/input/input15
[ 74.746246] uvcvideo: Failed to query (GET_INFO) UVC control 13 on unit 1: -32 (exp. 1).
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
Thanks,
Xiaolong
3 years, 11 months
d82fed7529 ("locking/lockdep/selftests: Fix mixed read-write .."): BUG: -1 unexpected failures (out of 262) - debugging disabled! |
by kernel test robot
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking/core
commit d82fed75294229abc9d757f08a4817febae6c4f4
Author: Peter Zijlstra <peterz(a)infradead.org>
AuthorDate: Mon Aug 28 14:42:45 2017 +0200
Commit: Ingo Molnar <mingo(a)kernel.org>
CommitDate: Tue Aug 29 15:15:17 2017 +0200
locking/lockdep/selftests: Fix mixed read-write ABBA tests
Commit:
e91498589746 ("locking/lockdep/selftests: Add mixed read-write ABBA tests")
adds an explicit FAILURE to the locking selftest but overlooked the
fact that this kills lockdep. Fudge the test to avoid this.
Signed-off-by: Peter Zijlstra (Intel) <peterz(a)infradead.org>
Cc: Linus Torvalds <torvalds(a)linux-foundation.org>
Cc: Peter Zijlstra <peterz(a)infradead.org>
Cc: Thomas Gleixner <tglx(a)linutronix.de>
Cc: hpa(a)zytor.com
Link: http://lkml.kernel.org/r/20170828124245.xlo2yshxq2btgmuf@hirez.programmin...
Signed-off-by: Ingo Molnar <mingo(a)kernel.org>
ec81048cc3 sched/completion: Avoid unnecessary stack allocation for COMPLETION_INITIALIZER_ONSTACK()
d82fed7529 locking/lockdep/selftests: Fix mixed read-write ABBA tests
d82fed7529 locking/lockdep/selftests: Fix mixed read-write ABBA tests
ddad247ed1 Merge branch 'perf/core'
+---------------------------------------------------------+------------+------------+------------+------------+
| | ec81048cc3 | d82fed7529 | d82fed7529 | ddad247ed1 |
+---------------------------------------------------------+------------+------------+------------+------------+
| boot_successes | 35 | 0 | 0 | 0 |
| boot_failures | 0 | 15 | 15 | 19 |
| BUG:-#unexpected_failures(out_of#)-debugging_disabled!| | 0 | 15 | 15 | 19 |
+---------------------------------------------------------+------------+------------+------------+------------+
[ 0.004000] context:failed| ok | ok |
[ 0.004000] try:failed| ok |failed|
[ 0.004000] block:failed| ok |failed|
[ 0.004000] spinlock:failed| ok |failed|
[ 0.004000] -----------------------------------------------------------------
[ 0.004000] BUG: -1 unexpected failures (out of 262) - debugging disabled! |
[ 0.004000] -----------------------------------------------------------------
[ 0.004000] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604467 ns
[ 0.004000] hpet clockevent registered
[ 0.004009] tsc: Detected 2693.508 MHz processor
[ 0.005226] Calibrating delay loop (skipped) preset value.. 5387.01 BogoMIPS (lpj=10774032)
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start c9d2cddca4506727eae2e7d2df0620edbf49e82e cc4a41fe5541a73019a864883297bd5043aa6d98 --
git bisect bad 5a5ab909d6bfaee8dd1332c7de7cc02ff3ec087f # 07:17 B 0 11 28 4 Merge 'wsa/i2c/for-next' into devel-catchup-201708300632
git bisect bad 2bf7c98887d8158669b5ded3ab55d6b211eea807 # 07:34 B 0 11 28 4 Merge 'andersson-remoteproc/rpmsg-next' into devel-catchup-201708300632
git bisect bad 0dee929f30bd25284c2f49fee5546691222a05b0 # 07:51 B 0 11 26 2 Merge 'tip/master' into devel-catchup-201708300632
git bisect good 08cc918622aa4d5516f770f8246d41f4a30c2c61 # 08:02 G 11 0 0 0 0day base guard for 'devel-catchup-201708300632'
git bisect good 1b2f76d77a277bb70d38ad0991ed7f16bbc115a9 # 08:17 G 11 0 0 0 Merge tag 'perf-core-for-mingo-4.14-20170829' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
git bisect bad 8ea7c2d9a971f95ec9f6ffac60cb4847d35f0b36 # 08:27 B 0 3 16 0 manual merge of locking/core
git bisect good af07c8069f9951cff957500f3adce04b8665934c # 08:44 G 11 0 0 0 Merge branch 'efi/core'
git bisect good 70911fdc9576f4eeb3986689a1c9a778a4a4aacb # 09:02 G 11 0 0 0 locking/lockdep: Change the meaning of check_prev_add()'s return value
git bisect good a1d14934ea4b9db816a8dbfeab1c3e7204a0d871 # 09:16 G 11 0 0 0 workqueue/lockdep: 'Fix' flush_work() annotation
git bisect good 500912121411e0175d44b69a7810ac6068e78326 # 09:29 G 11 0 0 0 irqchip/xtensa-mx: Report that effective affinity is a single target
git bisect good d45e3dd0a26d52e508e7796cb8f86cde4b3d8a92 # 09:43 G 11 0 0 0 Merge branch 'irq/core'
git bisect good 966a967116e699762dbf4af7f9e0d1955c25aa37 # 09:55 G 11 0 0 0 smp: Avoid using two cache lines for struct call_single_data
git bisect good 1c322ac06d9af7ea259098ae5dc977855207d335 # 10:02 G 11 0 0 0 acpi/nfit: Fix COMPLETION_INITIALIZER_ONSTACK() abuse
git bisect bad d82fed75294229abc9d757f08a4817febae6c4f4 # 10:15 B 0 11 27 3 locking/lockdep/selftests: Fix mixed read-write ABBA tests
git bisect good ec81048cc340bb03334e6ca62661ecc0a684897a # 10:27 G 11 0 0 0 sched/completion: Avoid unnecessary stack allocation for COMPLETION_INITIALIZER_ONSTACK()
# first bad commit: [d82fed75294229abc9d757f08a4817febae6c4f4] locking/lockdep/selftests: Fix mixed read-write ABBA tests
git bisect good ec81048cc340bb03334e6ca62661ecc0a684897a # 10:32 G 31 0 0 0 sched/completion: Avoid unnecessary stack allocation for COMPLETION_INITIALIZER_ONSTACK()
# extra tests with CONFIG_DEBUG_INFO_REDUCED
git bisect bad d82fed75294229abc9d757f08a4817febae6c4f4 # 10:48 B 0 10 23 0 locking/lockdep/selftests: Fix mixed read-write ABBA tests
# extra tests on HEAD of linux-devel/devel-catchup-201708300632
git bisect bad c9d2cddca4506727eae2e7d2df0620edbf49e82e # 10:48 B 0 35 51 0 0day head guard for 'devel-catchup-201708300632'
# extra tests on tree/branch tip/locking/core
git bisect bad d82fed75294229abc9d757f08a4817febae6c4f4 # 10:49 B 0 15 28 0 locking/lockdep/selftests: Fix mixed read-write ABBA tests
# extra tests with first bad commit reverted
git bisect good 5c767a6f4a19bda3da8982bb045a4031a536652f # 11:19 G 11 0 0 0 Revert "locking/lockdep/selftests: Fix mixed read-write ABBA tests"
# extra tests on tree/branch tip/master
git bisect bad ddad247ed1846f2e432e150461a3007fdca504bf # 11:36 B 0 11 32 8 Merge branch 'perf/core'
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/lkp Intel Corporation
3 years, 11 months
d5923ebd7c ("Merge branch 'WIP.x86/fpu'"): BUG: kernel hang in early-boot stage, last printk: Booting the kernel.
by kernel test robot
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git master
commit d5923ebd7cd211e5925383296723b0fab857afe4
Merge: 11b1743a0d92d 6061efb6ee6fc
Author: Ingo Molnar <mingo(a)kernel.org>
AuthorDate: Tue Aug 29 16:19:54 2017 +0200
Commit: Ingo Molnar <mingo(a)kernel.org>
CommitDate: Tue Aug 29 16:19:54 2017 +0200
Merge branch 'WIP.x86/fpu'
Conflicts:
drivers/lguest/x86/core.c
11b1743a0d Merge branch 'x86/urgent'
6061efb6ee x86/fpu: Turn WARN_ON() in context switch into WARN_ON_FPU()
d5923ebd7c Merge branch 'WIP.x86/fpu'
152d54a2bc Merge branch 'x86/asm'
+--------------------------------------------------------------------+------------+------------+------------+------------+
| | 11b1743a0d | 6061efb6ee | d5923ebd7c | 152d54a2bc |
+--------------------------------------------------------------------+------------+------------+------------+------------+
| boot_successes | 32 | 27 | 0 | 0 |
| boot_failures | 11 | 6 | 15 | 6 |
| BUG:kernel_reboot-without-warning_in_boot_stage | 11 | 1 | | |
| BUG:kernel_in_stage | 0 | 4 | | |
| BUG:kernel_reboot-without-warning_in_test_stage | 0 | 1 | | |
| BUG:kernel_hang_in_early-boot_stage,last_printk:Booting_the_kernel | 0 | 0 | 15 | 6 |
+--------------------------------------------------------------------+------------+------------+------------+------------+
Decompressing Linux... Parsing ELF... done.
Booting the kernel.
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start 7fa01c90f24ce7850460f4bef4905dacc66d07d0 cc4a41fe5541a73019a864883297bd5043aa6d98 --
git bisect bad 0c05f7489b656f738c2a8a26685223d166ebea6b # 01:33 B 0 11 24 0 Merge 'asoc/topic/rockchip' into devel-catchup-201708310002
git bisect bad a098a7e85504b2634974500375d04266cd0b2f94 # 01:56 B 0 11 24 0 Merge 'dledford/k.o/for-next' into devel-catchup-201708310002
git bisect bad 4fd60aafa624e670b48dbb98dde25d78368b4c17 # 02:14 B 0 11 24 0 Merge 'tip/master' into devel-catchup-201708310002
git bisect good 3b62a63dba4c234497d87fbbee2e29da133505a9 # 02:28 G 10 0 10 10 0day base guard for 'devel-catchup-201708310002'
git bisect good 1b2f76d77a277bb70d38ad0991ed7f16bbc115a9 # 02:53 G 11 0 2 2 Merge tag 'perf-core-for-mingo-4.14-20170829' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
git bisect good 8ea7c2d9a971f95ec9f6ffac60cb4847d35f0b36 # 03:10 G 11 0 11 11 manual merge of locking/core
git bisect good 9eb6b9d19b85c30162779d33725da23dc317845d # 03:27 G 11 0 3 3 Merge branch 'x86/asm'
git bisect good 64e82b58b54d38753763c329c43d0828e1231397 # 03:46 G 11 0 2 2 Merge branch 'x86/mm'
git bisect good 6061efb6ee6fc891498a23994a4d0a5e2a52c059 # 04:05 G 11 0 1 1 x86/fpu: Turn WARN_ON() in context switch into WARN_ON_FPU()
git bisect good 9e1240d649e55e314aa3df28d552a1f19932963b # 04:22 G 11 0 2 6 Merge branch 'x86/syscall'
git bisect good 36fde05f3fb51edea879636db590d70e11f16c82 # 04:43 G 11 0 11 11 Merge branch 'for-4.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
git bisect bad d5923ebd7cd211e5925383296723b0fab857afe4 # 05:02 B 0 5 18 0 Merge branch 'WIP.x86/fpu'
git bisect good 5746f0555d00e1cbb7bc20a2fd09041ace6f350c # 05:23 G 11 0 11 11 x86/boot: Provide more slack space during decompression
git bisect good 11b1743a0d92d501e762d1cbd8de3af91d22a064 # 05:47 G 11 0 9 11 Merge branch 'x86/urgent'
# first bad commit: [d5923ebd7cd211e5925383296723b0fab857afe4] Merge branch 'WIP.x86/fpu'
git bisect good 11b1743a0d92d501e762d1cbd8de3af91d22a064 # 05:57 G 32 0 0 11 Merge branch 'x86/urgent'
git bisect good 6061efb6ee6fc891498a23994a4d0a5e2a52c059 # 06:27 G 32 0 5 6 x86/fpu: Turn WARN_ON() in context switch into WARN_ON_FPU()
# extra tests with CONFIG_DEBUG_INFO_REDUCED
git bisect bad d5923ebd7cd211e5925383296723b0fab857afe4 # 06:43 B 0 8 22 0 Merge branch 'WIP.x86/fpu'
# extra tests on HEAD of linux-devel/devel-catchup-201708310002
git bisect bad 7fa01c90f24ce7850460f4bef4905dacc66d07d0 # 06:43 B 0 44 60 0 0day head guard for 'devel-catchup-201708310002'
# extra tests on tree/branch tip/master
git bisect bad 152d54a2bcf0fe120d7de9dc3491dc679687cbb4 # 06:45 B 0 6 19 0 Merge branch 'x86/asm'
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/lkp Intel Corporation
4 years
[lkp-robot] [irda] 66d98e78e4: BUG:unable_to_handle_kernel
by kernel test robot
FYI, we noticed the following commit:
commit: 66d98e78e44ccb969cb3196995759d200e64b49b ("irda: move net/irda/ to drivers/staging/irda/net/")
url: https://github.com/0day-ci/linux/commits/Greg-Kroah-Hartman/irda-move-it-...
in testcase: trinity
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 -smp 2 -m 320M
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+-----------------------------------------------------+------------+------------+
| | 89ff9d58e6 | 66d98e78e4 |
+-----------------------------------------------------+------------+------------+
| boot_successes | 0 | 0 |
| boot_failures | 10 | 12 |
| IP-Config:Auto-configuration_of_network_failed | 8 | |
| WARNING:at_arch/x86/mm/dump_pagetables.c:#note_page | 2 | |
| EIP:note_page | 2 | |
| BUG:unable_to_handle_kernel | 0 | 12 |
| Oops:#[##] | 0 | 12 |
| EIP:dev_add_pack | 0 | 12 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 12 |
+-----------------------------------------------------+------------+------------+
[ 0.227015] BUG: unable to handle kernel NULL pointer dereference at 00000004
[ 0.228000] IP: dev_add_pack+0x37/0x80
[ 0.228000] *pdpt = 0000000000000000 *pde = f000ff53f000ff53
[ 0.228000]
[ 0.228000] Oops: 0002 [#1] SMP
[ 0.228000] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.13.0-rc5-00526-g66d98e7 #60
[ 0.228000] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 0.228000] task: d3042040 task.stack: d3044000
[ 0.228000] EIP: dev_add_pack+0x37/0x80
[ 0.228000] EFLAGS: 00210286 CPU: 0
[ 0.228000] EAX: 00000000 EBX: c20c9318 ECX: d30424c8 EDX: c20c8c60
[ 0.228000] ESI: c20c8c4c EDI: 00000000 EBP: d3045f18 ESP: d3045f10
[ 0.228000] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[ 0.228000] CR0: 80050033 CR2: 00000004 CR3: 022f4000 CR4: 000006b0
[ 0.228000] Call Trace:
[ 0.228000] ? irda_nl_register+0xf/0xf
[ 0.228000] irda_init+0x30/0x88
[ 0.228000] do_one_initcall+0x8b/0x131
[ 0.228000] kernel_init_freeable+0xee/0x166
[ 0.228000] ? rest_init+0x120/0x120
[ 0.228000] kernel_init+0xb/0x100
[ 0.228000] ? schedule_tail_wrapper+0x9/0xc
[ 0.228000] ret_from_fork+0x19/0x24
[ 0.228000] Code: 03 00 00 74 3f 8b 5e 04 85 db 74 50 83 c3 5c b8 e0 6a 09 c2 e8 ab 69 20 00 8b 03 8d 56 14 89 5e 18 89 46 14 0f ae f0 89 f6 89 13 <89> 50 04 b8 e0 6a 09 c2 e8 cc 6d 20 00 5b 5e 5d c3 90 8d b4 26
[ 0.228000] EIP: dev_add_pack+0x37/0x80 SS:ESP: 0068:d3045f10
[ 0.228000] CR2: 0000000000000004
[ 0.228000] ---[ end trace 593bc6d2366a532d ]---
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Xiaolong
4 years
[lkp-robot] [fs] baeb74f5f5: BUG:unable_to_handle_kernel
by kernel test robot
FYI, we noticed the following commit:
commit: baeb74f5f530bcf19fdc165d9552ee9303414880 ("fs: fix kernel_read prototype")
git://git.infradead.org/users/hch/misc.git kernel-readwrite
in testcase: boot
on test machine: qemu-system-x86_64 -enable-kvm -m 420M
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+------------------------------------------+------------+------------+
| | a29473601a | baeb74f5f5 |
+------------------------------------------+------------+------------+
| boot_successes | 8 | 0 |
| boot_failures | 0 | 6 |
| BUG:unable_to_handle_kernel | 0 | 6 |
| Oops:#[##] | 0 | 6 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 6 |
+------------------------------------------+------------+------------+
[ 3.015392] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 3.016009] IP: rw_verify_area+0x17/0xb5
[ 3.016009] PGD 0
[ 3.016009] P4D 0
[ 3.016009]
[ 3.016009] Oops: 0000 [#1] SMP
[ 3.016009] Modules linked in:
[ 3.016009] CPU: 0 PID: 126 Comm: kworker/u2:0 Not tainted 4.13.0-rc7-00012-gbaeb74f #41
[ 3.016009] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 3.016009] task: ffff8a067376c380 task.stack: ffffa24f80a54000
[ 3.016009] RIP: 0010:rw_verify_area+0x17/0xb5
[ 3.016009] RSP: 0018:ffffa24f80a57e10 EFLAGS: 00010202
[ 3.016009] RAX: 00000000ffffffea RBX: 0000000000000080 RCX: 0000000000000080
[ 3.016009] RDX: 0000000000000000 RSI: ffff8a0672371480 RDI: 0000000000000000
[ 3.016009] RBP: ffffa24f80a57e48 R08: 000000000002801d R09: ffff8a0675cfc048
[ 3.016009] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8a0672371480
[ 3.016009] R13: ffff8a0674046b00 R14: 0000000000000000 R15: ffff8a067376c380
[ 3.016009] FS: 0000000000000000(0000) GS:ffff8a0679e00000(0000) knlGS:0000000000000000
[ 3.016009] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3.016009] CR2: 0000000000000000 CR3: 000000003002c000 CR4: 00000000000006f0
[ 3.016009] Call Trace:
[ 3.016009] ? vfs_read+0x92/0xef
[ 3.016009] kernel_read+0x2c/0x38
[ 3.016009] prepare_binprm+0x138/0x143
[ 3.016009] do_execveat_common+0x3c2/0x70f
[ 3.016009] do_execve+0x23/0x25
[ 3.016009] call_usermodehelper_exec_async+0x100/0x12d
[ 3.016009] ? __request_module+0x42e/0x42e
[ 3.016009] ret_from_fork+0x2a/0x40
[ 3.016009] Code: 48 63 c3 48 83 c4 18 5b 41 5a 41 5c 41 5d 41 5e 41 5f 5d c3 0f 1f 44 00 00 48 85 c9 4c 8b 4e 20 b8 ea ff ff ff 0f 88 9d 00 00 00 <48> 8b 12 48 85 d2 79 1e f6 86 8d 00 00 00 20 0f 84 88 00 00 00
[ 3.016009] RIP: rw_verify_area+0x17/0xb5 RSP: ffffa24f80a57e10
[ 3.016009] CR2: 0000000000000000
[ 3.016009] ---[ end trace 892b6c32748834c4 ]---
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Xiaolong
4 years
[lkp-robot] 3510ca20ec: will-it-scale.per_process_ops 57.3% improvement
by kernel test robot
Greeting,
FYI, we noticed a 57.3% improvement of will-it-scale.per_process_ops due to commit:
commit: 3510ca20ece0150af6b10c77a74ff1b5c198e3e2 ("Minor page waitqueue cleanups")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
in testcase: will-it-scale
on test machine: 72 threads Intel(R) Xeon(R) CPU E5-2699 v3 @ 2.30GHz with 128G memory
with following parameters:
nr_task: 100%
mode: process
test: pread2
cpufreq_governor: performance
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
Details are as below:
-------------------------------------------------------------------------------------------------->
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
testcase/path_params/tbox_group/run: will-it-scale/100%-process-pread2-performance/lkp-hsw-ep4
0cc3b0ec23ce4c69 3510ca20ece0150af6b10c77a7
---------------- --------------------------
%stddev change %stddev
\ | \
6671 57% 10495 will-it-scale.per_process_ops
468302 40% 657813 vmstat.system.cs
14.64 53% 22.42 perf-stat.cache-miss-rate%
1.42e+08 41% 1.996e+08 perf-stat.context-switches
1.826e+09 39% 2.546e+09 perf-stat.iTLB-loads
8.607e+08 39% 1.198e+09 perf-stat.node-store-misses
2.482e+11 35% 3.361e+11 perf-stat.dTLB-stores
0.34 33% 0.45 ± 3% perf-stat.branch-miss-rate%
3.512e+09 28% 4.49e+09 perf-stat.branch-misses
3.972e+09 26% 4.992e+09 perf-stat.cache-misses
2.475e+09 24% 3.067e+09 perf-stat.node-load-misses
6.177e+08 14% 7.073e+08 perf-stat.node-stores
14841 ± 10% 13% 16765 ± 3% perf-stat.instructions-per-iTLB-miss
58.21 8% 62.87 perf-stat.node-store-miss-rate%
36936 6% 39270 perf-stat.cpu-migrations
0.29 6% 0.31 perf-stat.ipc
1.032e+12 -4% 9.917e+11 perf-stat.branch-instructions
3.40 -6% 3.20 perf-stat.cpi
1.472e+13 -7% 1.363e+13 ± 3% perf-stat.cpu-cycles
2.965e+08 ± 13% -14% 2.543e+08 perf-stat.iTLB-load-misses
2.714e+10 -18% 2.226e+10 perf-stat.cache-references
2.191e+08 ± 4% -24% 1.667e+08 perf-stat.dTLB-store-misses
13.95 ± 12% -35% 9.08 perf-stat.iTLB-load-miss-rate%
0.09 ± 4% -44% 0.05 perf-stat.dTLB-store-miss-rate%
0.11 ± 36% -54% 0.05 ± 5% perf-stat.dTLB-load-miss-rate%
1.247e+09 ± 37% -55% 5.627e+08 ± 4% perf-stat.dTLB-load-misses
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,
Xiaolong
4 years
5c1aab1dd5 ("btrfs: Add zstd support"): BUG: kernel hang in early-boot stage, last printk: Booting the kernel.
by kernel test robot
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit 5c1aab1dd5445ed8bdcdbb575abc1b0d7ee5b2e7
Author: Nick Terrell <terrelln(a)fb.com>
AuthorDate: Wed Aug 9 19:39:02 2017 -0700
Commit: Chris Mason <clm(a)fb.com>
CommitDate: Tue Aug 15 09:02:09 2017 -0700
btrfs: Add zstd support
Add zstd compression and decompression support to BtrFS. zstd at its
fastest level compresses almost as well as zlib, while offering much
faster compression and decompression, approaching lzo speeds.
I benchmarked btrfs with zstd compression against no compression, lzo
compression, and zlib compression. I benchmarked two scenarios. Copying
a set of files to btrfs, and then reading the files. Copying a tarball
to btrfs, extracting it to btrfs, and then reading the extracted files.
After every operation, I call `sync` and include the sync time.
Between every pair of operations I unmount and remount the filesystem
to avoid caching. The benchmark files can be found in the upstream
zstd source repository under
`contrib/linux-kernel/{btrfs-benchmark.sh,btrfs-extract-benchmark.sh}`
[1] [2].
I ran the benchmarks on a Ubuntu 14.04 VM with 2 cores and 4 GiB of RAM.
The VM is running on a MacBook Pro with a 3.1 GHz Intel Core i7 processor,
16 GB of RAM, and a SSD.
The first compression benchmark is copying 10 copies of the unzipped
Silesia corpus [3] into a BtrFS filesystem mounted with
`-o compress-force=Method`. The decompression benchmark times how long
it takes to `tar` all 10 copies into `/dev/null`. The compression ratio is
measured by comparing the output of `df` and `du`. See the benchmark file
[1] for details. I benchmarked multiple zstd compression levels, although
the patch uses zstd level 1.
| Method | Ratio | Compression MB/s | Decompression speed |
|---------|-------|------------------|---------------------|
| None | 0.99 | 504 | 686 |
| lzo | 1.66 | 398 | 442 |
| zlib | 2.58 | 65 | 241 |
| zstd 1 | 2.57 | 260 | 383 |
| zstd 3 | 2.71 | 174 | 408 |
| zstd 6 | 2.87 | 70 | 398 |
| zstd 9 | 2.92 | 43 | 406 |
| zstd 12 | 2.93 | 21 | 408 |
| zstd 15 | 3.01 | 11 | 354 |
The next benchmark first copies `linux-4.11.6.tar` [4] to btrfs. Then it
measures the compression ratio, extracts the tar, and deletes the tar.
Then it measures the compression ratio again, and `tar`s the extracted
files into `/dev/null`. See the benchmark file [2] for details.
| Method | Tar Ratio | Extract Ratio | Copy (s) | Extract (s)| Read (s) |
|--------|-----------|---------------|----------|------------|----------|
| None | 0.97 | 0.78 | 0.981 | 5.501 | 8.807 |
| lzo | 2.06 | 1.38 | 1.631 | 8.458 | 8.585 |
| zlib | 3.40 | 1.86 | 7.750 | 21.544 | 11.744 |
| zstd 1 | 3.57 | 1.85 | 2.579 | 11.479 | 9.389 |
[1] https://github.com/facebook/zstd/blob/dev/contrib/linux-kernel/btrfs-benc...
[2] https://github.com/facebook/zstd/blob/dev/contrib/linux-kernel/btrfs-extr...
[3] http://sun.aei.polsl.pl/~sdeor/index.php?page=silesia
[4] https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.11.6.tar.xz
zstd source repository: https://github.com/facebook/zstd
Signed-off-by: Nick Terrell <terrelln(a)fb.com>
Signed-off-by: Chris Mason <clm(a)fb.com>
73f3d1b48f lib: Add zstd modules
5c1aab1dd5 btrfs: Add zstd support
adc4148c10 Add linux-next specific files for 20170828
+--------------------------------------------------------------------+------------+------------+---------------+
| | 73f3d1b48f | 5c1aab1dd5 | next-20170828 |
+--------------------------------------------------------------------+------------+------------+---------------+
| boot_successes | 31 | 0 | 0 |
| boot_failures | 4 | 21 | 23 |
| IP-Config:Auto-configuration_of_network_failed | 4 | | |
| BUG:kernel_hang_in_early-boot_stage,last_printk:Booting_the_kernel | 0 | 21 | 23 |
+--------------------------------------------------------------------+------------+------------+---------------+
Decompressing Linux... Parsing ELF... done.
Booting the kernel.
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start 7d744d9889d3bf6d18152cc7ab2eff4b541e91ac 14ccee78fc82f5512908f4424f541549a5705b89 --
git bisect good 7a40daca5117a71f893b75929e7d6cce24eeb15a # 03:50 G 11 0 0 0 Merge 'linux-review/Vadim-Lomovtsev/net-sunrpc-svcsock-fix-NULL-pointer-exception/20170823-212714' into devel-spot-201708240558
git bisect good 0f3e945501ce5af141983e83078f1aea933ae2ee # 04:36 G 11 0 0 0 Merge 'linux-review/Dmitry-Fleytman/usb-Add-device-quirk-for-Logitech-HD-Pro-Webcam-C920-C/20170823-145321' into devel-spot-201708240558
git bisect bad 5c3677900758dfd87eec1bade63f66853683f00e # 06:43 B 0 3 16 0 Merge 'char-misc/char-misc-testing' into devel-spot-201708240558
git bisect good 871b4817f99d09e8294a7f4f6e550603ce23a599 # 08:56 G 10 0 0 2 Merge 'linux-review/Christophe-JAILLET/phy-qcom-usb-hsic-Fix-error-handling/20170823-114654' into devel-spot-201708240558
git bisect bad 32771c0528f294c21f373021a6b7facbb6ca3af1 # 08:56 B 0 6 18 0 Merge 'stffrdhrn/openrisc-4.13-smp-qspinlock' into devel-spot-201708240558
git bisect bad 202e19b651a4ede36ae1cfbaea0fad6f68a5eee3 # 09:50 B 0 11 33 9 Merge 'linux-review/SF-Markus-Elfring/btrfs-Use-common-error-handling-code-in-update_ref_path/20170823-105603' into devel-spot-201708240558
git bisect bad 5c1aab1dd5445ed8bdcdbb575abc1b0d7ee5b2e7 # 10:21 B 0 11 25 2 btrfs: Add zstd support
git bisect good 73f3d1b48f5069d46ba48aa28c2898dc93185560 # 10:42 G 11 0 0 0 lib: Add zstd modules
# first bad commit: [5c1aab1dd5445ed8bdcdbb575abc1b0d7ee5b2e7] btrfs: Add zstd support
git bisect good 73f3d1b48f5069d46ba48aa28c2898dc93185560 # 10:53 G 31 0 0 4 lib: Add zstd modules
# extra tests with CONFIG_DEBUG_INFO_REDUCED
git bisect bad 5c1aab1dd5445ed8bdcdbb575abc1b0d7ee5b2e7 # 11:12 B 0 11 23 0 btrfs: Add zstd support
# extra tests on HEAD of linux-devel/devel-spot-201708240558
git bisect bad 7d744d9889d3bf6d18152cc7ab2eff4b541e91ac # 11:13 B 0 17 32 0 0day head guard for 'devel-spot-201708240558'
# extra tests on tree/branch linux-next/master
git bisect bad adc4148c101c038bc105ca4539083dcd1a246596 # 11:32 B 0 3 15 0 Add linux-next specific files for 20170828
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/lkp Intel Corporation
4 years
[lkp-robot] [sched/fair] 367a3aa35e: BUG:unable_to_handle_kernel
by kernel test robot
FYI, we noticed the following commit:
commit: 367a3aa35e7bed10a74bed139f6728916f5d1508 ("sched/fair: Fix wake_affine() for !NUMA_BALANCING")
in testcase: boot
on test machine: qemu-system-x86_64 -enable-kvm -cpu Haswell,+smep,+smap -smp 2 -m 1G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+------------------------------------------------------------------+------------+------------+
| | 01cbe29aa8 | 367a3aa35e |
+------------------------------------------------------------------+------------+------------+
| boot_successes | 12 | 0 |
| boot_failures | 38 | 59 |
| invoked_oom-killer:gfp_mask=0x | 38 | |
| Mem-Info | 38 | |
| Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes | 38 | |
| BUG:unable_to_handle_kernel | 0 | 59 |
| Oops:#[##] | 0 | 59 |
| Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 0 | 50 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 9 |
+------------------------------------------------------------------+------------+------------+
[ 0.381170] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 0.384178] IP: (null)
[ 0.385393] PGD 0
[ 0.385399] P4D 0
[ 0.386375]
[ 0.388395] Oops: 0010 [#1] PREEMPT SMP KASAN
[ 0.390000] Modules linked in:
[ 0.390000] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.13.0-rc4-00005-g367a3aa #1
[ 0.390000] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 0.390000] task: ffff88002a024040 task.stack: ffff88002a028000
[ 0.390000] RIP: 0010: (null)
[ 0.390000] RSP: 0000:ffff88002a02fbf8 EFLAGS: 00010002
[ 0.390000] RAX: ffff88002a02fbe0 RBX: 0000000000000001 RCX: 0000000000000000
[ 0.390000] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88002a02fc00
[ 0.390000] RBP: 0000000000000000 R08: 0000000000000000 R09: ffff88002a02fbe0
[ 0.390000] R10: ffff88002a02fa90 R11: 0000000000000000 R12: 0000000000000000
[ 0.390000] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88002a2dfb00
[ 0.390000] FS: 0000000000000000(0000) GS:ffff88002ae00000(0000) knlGS:0000000000000000
[ 0.390000] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 0.390000] CR2: 0000000000000000 CR3: 0000000002c13000 CR4: 00000000000406f0
[ 0.390000] Call Trace:
[ 0.390000] ? __lock_acquire+0x709/0x996
[ 0.390000] ? __lock_acquire+0x709/0x996
[ 0.390000] ? lock_is_held_type+0x75/0x8f
[ 0.390000] ? select_task_rq+0xf3/0x1d0
[ 0.390000] ? try_to_wake_up+0x26a/0x44f
[ 0.390000] ? wake_up_process+0x1c/0x25
[ 0.390000] ? __alloc_workqueue_key+0x6cc/0x81c
[ 0.390000] ? cpus_read_unlock+0x11e/0x136
[ 0.390000] ? kmem_cache_create+0x2f9/0x3a8
[ 0.390000] ? net_defaults_init+0x85/0x85
[ 0.390000] ? net_ns_init+0x83/0x241
[ 0.390000] ? net_defaults_init+0x85/0x85
[ 0.390000] ? do_one_initcall+0x10a/0x2a4
[ 0.390000] ? kernel_init_freeable+0x417/0x5c8
[ 0.390000] ? rest_init+0x143/0x143
[ 0.390000] ? kernel_init+0x15/0x262
[ 0.390000] ? ret_from_fork+0x2a/0x40
[ 0.390000] Code: Bad RIP value.
[ 0.390000] RIP: (null) RSP: ffff88002a02fbf8
[ 0.390000] CR2: 0000000000000000
[ 0.390000] ---[ end trace 8fd7d69d2c2fef8c ]---
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Xiaolong
4 years
1ca163afb6 ("irda: move net/irda/ to drivers/staging/irda/net/"): BUG: unable to handle kernel NULL pointer dereference at 00000004
by kernel test robot
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
https://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue.git dev-queue
commit 1ca163afb6fd569b6efdc221954177cba5a02cbc
Author: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
AuthorDate: Sun Aug 27 17:03:31 2017 +0200
Commit: David S. Miller <davem(a)davemloft.net>
CommitDate: Mon Aug 28 16:42:56 2017 -0700
irda: move net/irda/ to drivers/staging/irda/net/
It's time to get rid of IRDA. It's long been broken, and no one seems
to use it anymore. So move it to staging and after a while, we can
delete it from there.
To start, move the network irda core from net/irda to
drivers/staging/irda/net/
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
Signed-off-by: David S. Miller <davem(a)davemloft.net>
9d8c7e5a87 Merge branch 'dpaa_eth-rss'
1ca163afb6 irda: move net/irda/ to drivers/staging/irda/net/
3cfc4a120a ixgbe: add error checks when initializing the PHY
+-----------------------------------------------------+------------+------------+------------+
| | 9d8c7e5a87 | 1ca163afb6 | 3cfc4a120a |
+-----------------------------------------------------+------------+------------+------------+
| boot_successes | 2 | 0 | 0 |
| boot_failures | 57 | 26 | 12 |
| WARNING:at_arch/x86/mm/dump_pagetables.c:#note_page | 55 | | |
| EIP:note_page | 55 | | |
| invoked_oom-killer:gfp_mask=0x | 1 | | |
| Mem-Info | 1 | | |
| IP-Config:Auto-configuration_of_network_failed | 2 | | |
| BUG:unable_to_handle_kernel | 0 | 26 | 12 |
| Oops:#[##] | 0 | 26 | 12 |
| EIP:dev_add_pack | 0 | 26 | 12 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 26 | 12 |
| BUG:kernel_in_stage | 0 | 2 | |
+-----------------------------------------------------+------------+------------+------------+
[ 0.124299] SCSI subsystem initialized
[ 0.125024] libata version 3.00 loaded.
[ 0.125494] media: Linux media interface: v0.10
[ 0.126015] Linux video capture interface: v2.00
[ 0.126582] NET: Registered protocol family 23
[ 0.127010] BUG: unable to handle kernel NULL pointer dereference at 00000004
[ 0.127780] IP: dev_add_pack+0x37/0x80
[ 0.128000] *pdpt = 0000000000000000 *pde = f000ff53f000ff53
[ 0.128000]
[ 0.128000] Oops: 0002 [#1] SMP
[ 0.128000] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.13.0-rc6-01476-g1ca163a #67
[ 0.128000] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 0.128000] task: cf438040 task.stack: cf43a000
[ 0.128000] EIP: dev_add_pack+0x37/0x80
[ 0.128000] EFLAGS: 00210286 CPU: 0
[ 0.128000] EAX: 00000000 EBX: c20cad18 ECX: cf4384c8 EDX: c20ca660
[ 0.128000] ESI: c20ca64c EDI: 00000000 EBP: cf43bf18 ESP: cf43bf10
[ 0.128000] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[ 0.128000] CR0: 80050033 CR2: 00000004 CR3: 022f5000 CR4: 001406f0
[ 0.128000] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 0.128000] DR6: fffe0ff0 DR7: 00000400
[ 0.128000] Call Trace:
[ 0.128000] ? irda_nl_register+0xf/0xf
[ 0.128000] irda_init+0x30/0x88
[ 0.128000] do_one_initcall+0x8b/0x131
[ 0.128000] kernel_init_freeable+0xee/0x166
[ 0.128000] ? rest_init+0x120/0x120
[ 0.128000] kernel_init+0xb/0x100
[ 0.128000] ? schedule_tail_wrapper+0x9/0xc
[ 0.128000] ret_from_fork+0x19/0x24
[ 0.128000] Code: 03 00 00 74 3f 8b 5e 04 85 db 74 50 83 c3 5c b8 60 87 09 c2 e8 db 6c 20 00 8b 03 8d 56 14 89 5e 18 89 46 14 0f ae f0 89 f6 89 13 <89> 50 04 b8 60 87 09 c2 e8 fc 70 20 00 5b 5e 5d c3 90 8d b4 26
[ 0.128000] EIP: dev_add_pack+0x37/0x80 SS:ESP: 0068:cf43bf10
[ 0.128000] CR2: 0000000000000004
[ 0.128000] ---[ end trace d26a4daa7acee230 ]---
[ 0.128000] Kernel panic - not syncing: Fatal exception
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start acae4b48856838d71d548ab6610a99d8e32653e4 v4.12 --
git bisect good b8c17f7088310e7ee34ca61929f737045adfd449 # 10:40 G 11 0 11 13 net: hns: Add self-adaptive interrupt coalesce support in hns driver
git bisect good 26d159482a0283568557eb606d7f869db7fa03d4 # 10:48 G 11 0 11 13 mlx5: remove unnecessary pci_set_drvdata()
git bisect good 06552f8e18fb271233318e82e983f29d9cb1d72e # 10:56 G 11 0 11 22 Merge branch 'Huawei-HiNIC-Ethernet-Driver'
git bisect good 790c6056686cc4dd5b149b330bbd5ae208d4d721 # 11:06 G 10 0 10 11 devlink: Fix devlink_dpipe_table_register() stub signature.
git bisect good aa8db499ea67cff1f5f049033810ffede2fe5ae4 # 11:17 G 11 0 11 15 ipv4: make net_protocol const
git bisect good f7423eea52770935e3c36fafe511ef9aa5e0fc6d # 11:27 G 11 0 11 12 Merge branch 'mlxsw-dpipe-fixes'
git bisect bad 70f5c98228e3f790be50962294ea21eceecde115 # 11:39 B 0 11 38 15 Merge branch 'irda-move-to-staging'
git bisect good 0df49584ed6f0e99f3e16d6b10acef32fe21ce0d # 11:43 G 11 0 11 18 net: ethernet: broadcom: Remove null check before kfree
git bisect good 9d8c7e5a87b175c3a956cd36989022be978ea1d4 # 11:52 G 11 0 11 22 Merge branch 'dpaa_eth-rss'
git bisect bad 6c391ff758eb9f41e11c6143fd5bdb3b3324bf9f # 12:09 B 0 11 34 11 irda: move drivers/net/irda to drivers/staging/irda/drivers
git bisect bad 1ca163afb6fd569b6efdc221954177cba5a02cbc # 12:19 B 0 11 36 13 irda: move net/irda/ to drivers/staging/irda/net/
# first bad commit: [1ca163afb6fd569b6efdc221954177cba5a02cbc] irda: move net/irda/ to drivers/staging/irda/net/
git bisect good 9d8c7e5a87b175c3a956cd36989022be978ea1d4 # 12:30 G 33 0 33 57 Merge branch 'dpaa_eth-rss'
# extra tests with CONFIG_DEBUG_INFO_REDUCED
git bisect bad 1ca163afb6fd569b6efdc221954177cba5a02cbc # 12:44 B 0 11 38 15 irda: move net/irda/ to drivers/staging/irda/net/
# extra tests on HEAD of jkirsher-next-queue/dev-queue
git bisect bad 7e65674d184b2ffda5f2dea1dd401bc990234aad # 12:45 B 0 13 28 0 ixgbe: add error checks when initializing the PHY
# extra tests on tree/branch jkirsher-next-queue/dev-queue
git bisect bad 3cfc4a120a7258ba8bf3929071c3312168b6e10b # 16:54 B 0 12 24 0 ixgbe: add error checks when initializing the PHY
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/lkp Intel Corporation
4 years