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Date: Sun, 26 Feb 2017 14:31:24 +0800
From: kernel test robot <fengguang.wu@...el.com>
To: Chris Wilson <chris@...is-wilson.co.uk>
Cc: LKP <lkp@...org>, linux-kernel@...r.kernel.org,
"Peter Zijlstra (Intel)" <peterz@...radead.org>,
Ingo Molnar <mingo@...nel.org>, wfg@...ux.intel.com
Subject: [locking/ww_mutex] f2a5fec173: BUG: workqueue lockup - pool
cpus=0 node=0 flags=0x0 nice=0 stuck for 59s!
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit f2a5fec17395f259d54daa8833d81b00cceb15c3
Author: Chris Wilson <chris@...is-wilson.co.uk>
AuthorDate: Thu Dec 1 11:47:06 2016 +0000
Commit: Ingo Molnar <mingo@...nel.org>
CommitDate: Sat Jan 14 11:37:14 2017 +0100
locking/ww_mutex: Begin kselftests for ww_mutex
Signed-off-by: Chris Wilson <chris@...is-wilson.co.uk>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Maarten Lankhorst <dev@...ankhorst.nl>
Cc: Nicolai Hähnle <nhaehnle@...il.com>
Cc: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Link: http://lkml.kernel.org/r/20161201114711.28697-4-chris@chris-wilson.co.uk
Signed-off-by: Ingo Molnar <mingo@...nel.org>
0186a6cbdc locking/ww_mutex: Add ww_mutex to locktorture test
f2a5fec173 locking/ww_mutex: Begin kselftests for ww_mutex
+-------------------------------+------------+------------+
| | 0186a6cbdc | f2a5fec173 |
+-------------------------------+------------+------------+
| boot_successes | 120 | 0 |
| boot_failures | 0 | 112 |
| BUG:workqueue_lockup-pool | 0 | 97 |
| BUG:kernel_hang_in_boot_stage | 0 | 15 |
+-------------------------------+------------+------------+
[ 3.036274] PCI: CLS 0 bytes, default 64
[ 3.038041] Unpacking initramfs...
[ 3.058066] workqueue: round-robin CPU selection forced, expect performance impact
[ 3.149167] debug: unmapping init [mem 0xcfc9d000-0xcffcffff]
[ 3.152572] cryptomgr_test (23) used greatest stack depth: 7652 bytes left
[ 63.606059] BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 59s!
[ 63.610183] Showing busy workqueues and worker pools:
[ 63.611720] workqueue events: flags=0x0
[ 63.613064] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256
[ 63.614743] in-flight: 22:test_mutex_work
[ 63.616153] pending: tsc_refine_calibration_work
git bisect start e7a9cdaf617bb866348b56c41806f9405df24e38 c470abd4fde40ea6a0846a2beab642a578c0b8cd --
git bisect bad c6ab4540dc999ad60e5f4e20d29b8039fb093b30 # 00:57 0- 7 Merge 'dax/fd-alloc' into devel-spot-201702251707
git bisect good bd66678f66ab6a7aab38d8d8e7bd82086300ad2f # 01:12 20+ 0 Merge 'chanwoo-extcon/extcon-next' into devel-spot-201702251707
git bisect bad 57efc9635834ab4a24fa94ed200b32585d67b175 # 01:26 0- 7 Merge 'jlayton/ceph-4.11' into devel-spot-201702251707
git bisect good d0ca01d183ec3766f03c1ffe66921ce0f43b8d50 # 01:45 20+ 2 Merge 'linux-review/Bjorn-Andersson/arm64-dts-msm8996-Add-modem-and-slpi-smp2p-nodes/20170225-083258' into devel-spot-201702251707
git bisect bad 229797d6c89ad2304c27c1d355d7684f20097fa3 # 02:09 0- 10 Merge 'linux-review/Eric-Biggers/crypto-constify-test-vectors/20170225-075240' into devel-spot-201702251707
git bisect bad eb4085c137f82fa834cceb1d8e5f4b1264fbd297 # 02:22 0- 13 Merge 'linux-review/Niklas-Cassel/locking-rwsem-fix-down_write_killable-for-CONFIG_RWSEM_GENERIC_SPINLOCK/20170225-082246' into devel-spot-201702251707
git bisect bad f2a5fec17395f259d54daa8833d81b00cceb15c3 # 02:31 0- 6 locking/ww_mutex: Begin kselftests for ww_mutex
git bisect good 3822da3ed0676e01f83fe0518c333c8e9ba249bf # 02:53 20+ 0 locking/ww_mutex: Extract stamp comparison to __ww_mutex_stamp_after()
git bisect good 427b18207a87f6306bd53a74e03dbe17392b0045 # 03:23 20+ 0 locking/mutex: Improve inlining
git bisect good 977625a693283dbb35b2a3f674bc0237f7347348 # 11:46 22+ 1 locking/mutex: Initialize mutex_waiter::ww_ctx with poison when debugging
git bisect good 0186a6cbdc6287fde65858e5d9c714dc167b8ace # 12:45 20+ 0 locking/ww_mutex: Add ww_mutex to locktorture test
# first bad commit: [f2a5fec17395f259d54daa8833d81b00cceb15c3] locking/ww_mutex: Begin kselftests for ww_mutex
git bisect good 0186a6cbdc6287fde65858e5d9c714dc167b8ace # 14:12 60+ 0 locking/ww_mutex: Add ww_mutex to locktorture test
# extra tests on HEAD of linux-devel/devel-spot-201702251707
git bisect bad e7a9cdaf617bb866348b56c41806f9405df24e38 # 14:13 0- 45 0day head guard for 'devel-spot-201702251707'
# extra tests on tree/branch linus/master
git bisect bad c4f3f22eddc982d247ffe2a6690c3e4a5c46dd09 # 14:31 0- 1 Merge tag 'linux-kselftest-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
# extra tests on tree/branch linux-next/master
git bisect bad 3e7350242c6f3d41d28e03418bd781cc1b7bad5f # 14:31 0- 44 Add linux-next specific files for 20170224
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/lkp Intel Corporation
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