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Date: Sat, 10 Jun 2023 23:15:34 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Tejun Heo <tj@...nel.org>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>,
<linux-kernel@...r.kernel.org>, <oliver.sang@...el.com>
Subject: [tj-wq:affinity-scopes-dbg-invalid-cpu] [workqueue] 3dc062d6ad:
WARNING:at_kernel/workqueue.c:#kick_pool
hi, Tejun Heo,
we noticed this is a DEBUG PATCH, and in our boot tests on vm, the WARNING
you added is hit. not sure if this report is useable to you. just FYI
Hello,
kernel test robot noticed "WARNING:at_kernel/workqueue.c:#kick_pool" on:
commit: 3dc062d6add06ae7896803e807ea8b4971135f39 ("workqueue: DEBUG PATCH")
https://git.kernel.org/cgit/linux/kernel/git/tj/wq.git affinity-scopes-dbg-invalid-cpu
in testcase: boot
compiler: gcc-12
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
(please refer to attached dmesg/kmsg for entire log/backtrace)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@...el.com>
| Closes: https://lore.kernel.org/oe-lkp/202306102251.61f5a4f9-oliver.sang@intel.com
[ 2.179626][ T1] ------------[ cut here ]------------
[ 2.180364][ T1] WARNING: CPU: 0 PID: 1 at kernel/workqueue.c:1130 kick_pool (workqueue.c:?)
[ 2.180364][ T1] Modules linked in:
[ 2.180364][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.4.0-rc1-00036-g3dc062d6add0 #1
[ 2.180364][ T1] EIP: kick_pool (workqueue.c:?)
[ 2.180364][ T1] Code: 78 0c 00 75 41 8b 57 40 0f a3 50 08 72 38 8b 43 40 8d 70 fc 8b 83 10 02 00 00 83 c0 08 e8 15 93 8d 00 3b 05 78 0c 31 c2 72 04 <0f> 0b eb 03 89 47 40 89 f0 e8 f5 f6 ff ff 83 80 9c 00 00 00 01 83
All code
========
0: 78 0c js 0xe
2: 00 75 41 add %dh,0x41(%rbp)
5: 8b 57 40 mov 0x40(%rdi),%edx
8: 0f a3 50 08 bt %edx,0x8(%rax)
c: 72 38 jb 0x46
e: 8b 43 40 mov 0x40(%rbx),%eax
11: 8d 70 fc lea -0x4(%rax),%esi
14: 8b 83 10 02 00 00 mov 0x210(%rbx),%eax
1a: 83 c0 08 add $0x8,%eax
1d: e8 15 93 8d 00 callq 0x8d9337
22: 3b 05 78 0c 31 c2 cmp -0x3dcef388(%rip),%eax # 0xffffffffc2310ca0
28: 72 04 jb 0x2e
2a:* 0f 0b ud2 <-- trapping instruction
2c: eb 03 jmp 0x31
2e: 89 47 40 mov %eax,0x40(%rdi)
31: 89 f0 mov %esi,%eax
33: e8 f5 f6 ff ff callq 0xfffffffffffff72d
38: 83 80 9c 00 00 00 01 addl $0x1,0x9c(%rax)
3f: 83 .byte 0x83
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: eb 03 jmp 0x7
4: 89 47 40 mov %eax,0x40(%rdi)
7: 89 f0 mov %esi,%eax
9: e8 f5 f6 ff ff callq 0xfffffffffffff703
e: 83 80 9c 00 00 00 01 addl $0x1,0x9c(%rax)
15: 83 .byte 0x83
[ 2.180364][ T1] EAX: 00000002 EBX: eb8d4780 ECX: 00000000 EDX: 00000000
[ 2.180364][ T1] ESI: c21d03ac EDI: c31e1340 EBP: c3171f48 ESP: c3171f3c
[ 2.180364][ T1] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00010046
[ 2.180364][ T1] CR0: 80050033 CR2: ff7ff000 CR3: 023e3000 CR4: 000406b0
[ 2.180364][ T1] Call Trace:
[ 2.180364][ T1] create_worker (workqueue.c:?)
[ 2.180364][ T1] workqueue_init (??:?)
[ 2.180364][ T1] kernel_init_freeable (main.c:?)
[ 2.180364][ T1] ? rest_init (main.c:?)
[ 2.180364][ T1] kernel_init (main.c:?)
[ 2.180364][ T1] ret_from_fork (??:?)
[ 2.180364][ T1] irq event stamp: 196
[ 2.180364][ T1] hardirqs last enabled at (195): _raw_spin_unlock_irqrestore (??:?)
[ 2.180364][ T1] hardirqs last disabled at (196): _raw_spin_lock_irq (??:?)
[ 2.180364][ T1] softirqs last enabled at (0): copy_process (??:?)
[ 2.180364][ T1] softirqs last disabled at (0): 0x0
[ 2.180364][ T1] ---[ end trace 0000000000000000 ]---
[ 2.181060][ T1] cblist_init_generic: Setting adjustable number of callback queues.
To reproduce:
# build kernel
cd linux
cp config-6.4.0-rc1-00036-g3dc062d6add0 .config
make HOSTCC=gcc-12 CC=gcc-12 ARCH=i386 olddefconfig prepare modules_prepare bzImage modules
make HOSTCC=gcc-12 CC=gcc-12 ARCH=i386 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
# if come across any failure that blocks the test,
# please remove ~/.lkp and /lkp dir to run from a clean state.
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
View attachment "config-6.4.0-rc1-00036-g3dc062d6add0" of type "text/plain" (154446 bytes)
View attachment "job-script" of type "text/plain" (4949 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (38944 bytes)
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