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Message-ID: <202212301353.5c959d72-yujie.liu@intel.com>
Date: Fri, 30 Dec 2022 14:48:21 +0800
From: kernel test robot <yujie.liu@...el.com>
To: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>,
Peter Zijlstra <peterz@...radead.org>,
<linux-kernel@...r.kernel.org>, <x86@...nel.org>,
<linux-mm@...ck.org>
Subject: [tip:sched/core] [sched] af7f588d8f:
WARNING:at_kernel/sched/core.c:#sched_mm_cid_after_execve
Greeting,
FYI, we noticed WARNING:at_kernel/sched/core.c:#sched_mm_cid_after_execve due to commit (built with gcc-11):
commit: af7f588d8f7355bc4298dd1962d7826358fc95f0 ("sched: Introduce per-memory-map concurrency ID")
https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git sched/core
in testcase: boot
on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
[ 17.705597][ T48] ------------[ cut here ]------------
[ 17.706795][ T48] WARNING: CPU: 0 PID: 48 at kernel/sched/core.c:11344 sched_mm_cid_after_execve (??:?)
[ 17.708842][ T48] Modules linked in:
[ 17.709685][ T48] CPU: 0 PID: 48 Comm: kworker/u4:0 Tainted: G T 6.2.0-rc1-00009-gaf7f588d8f73 #1
[ 17.725504][ T48] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-5 04/01/2014
[ 17.727337][ T48] RIP: 0010:sched_mm_cid_after_execve (??:?)
[ 17.728520][ T48] Code: 00 20 75 17 4d 85 ed 75 09 48 ff 05 b9 e6 9e 04 eb 09 48 ff 05 b8 e6 9e 04 eb 20 48 ff 05 b7 e6 9e 04 90 48 ff 05 b7 e6 9e 04 <0f> 0b 48 ff 05 b6 e6 9e 04 90 48 ff 05 b6 e6 9e 04 9c 58 48 ff 05
All code
========
0: 00 20 add %ah,(%rax)
2: 75 17 jne 0x1b
4: 4d 85 ed test %r13,%r13
7: 75 09 jne 0x12
9: 48 ff 05 b9 e6 9e 04 incq 0x49ee6b9(%rip) # 0x49ee6c9
10: eb 09 jmp 0x1b
12: 48 ff 05 b8 e6 9e 04 incq 0x49ee6b8(%rip) # 0x49ee6d1
19: eb 20 jmp 0x3b
1b: 48 ff 05 b7 e6 9e 04 incq 0x49ee6b7(%rip) # 0x49ee6d9
22: 90 nop
23: 48 ff 05 b7 e6 9e 04 incq 0x49ee6b7(%rip) # 0x49ee6e1
2a:* 0f 0b ud2 <-- trapping instruction
2c: 48 ff 05 b6 e6 9e 04 incq 0x49ee6b6(%rip) # 0x49ee6e9
33: 90 nop
34: 48 ff 05 b6 e6 9e 04 incq 0x49ee6b6(%rip) # 0x49ee6f1
3b: 9c pushfq
3c: 58 pop %rax
3d: 48 rex.W
3e: ff .byte 0xff
3f: 05 .byte 0x5
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: 48 ff 05 b6 e6 9e 04 incq 0x49ee6b6(%rip) # 0x49ee6bf
9: 90 nop
a: 48 ff 05 b6 e6 9e 04 incq 0x49ee6b6(%rip) # 0x49ee6c7
11: 9c pushfq
12: 58 pop %rax
13: 48 rex.W
14: ff .byte 0xff
15: 05 .byte 0x5
[ 17.732461][ T48] RSP: 0000:ffffc900001afea8 EFLAGS: 00010202
[ 17.733671][ T48] RAX: fffffffffffffffe RBX: ffff88810d0fc000 RCX: 0000000000000000
[ 17.735287][ T48] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88810d0fc000
[ 17.736888][ T48] RBP: ffffc900001afec0 R08: 0000000000000000 R09: 0000000000000000
[ 17.738459][ T48] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88810d0fc000
[ 17.740095][ T48] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88810d0fc000
[ 17.741661][ T48] FS: 0000000000000000(0000) GS:ffff88842fa00000(0000) knlGS:0000000000000000
[ 17.743440][ T48] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 17.744623][ T48] CR2: ffff88843ffff000 CR3: 0000000003e24000 CR4: 00000000000406f0
[ 17.746241][ T48] Call Trace:
[ 17.746912][ T48] <TASK>
[ 17.747520][ T48] bprm_execve (exec.c:?)
[ 17.748358][ T48] ? call_usermodehelper_exec_work (umh.c:?)
[ 17.749462][ T48] kernel_execve (??:?)
[ 17.750332][ T48] call_usermodehelper_exec_async (umh.c:?)
[ 17.751363][ T48] ? call_usermodehelper_exec_work (umh.c:?)
[ 17.752163][ T48] ret_from_fork (??:?)
[ 17.752648][ T48] </TASK>
[ 17.752951][ T48] irq event stamp: 395
[ 17.753354][ T48] hardirqs last enabled at (403): __up_console_sem (printk.c:?)
[ 17.754946][ T48] hardirqs last disabled at (410): __up_console_sem (printk.c:?)
[ 17.756385][ T48] softirqs last enabled at (278): __do_softirq (??:?)
[ 17.757317][ T48] softirqs last disabled at (273): __irq_exit_rcu (softirq.c:?)
[ 17.758540][ T48] ---[ end trace 0000000000000000 ]---
If you fix the issue, kindly add following tag
| Reported-by: kernel test robot <yujie.liu@...el.com>
| Link: https://lore.kernel.org/oe-lkp/202212301353.5c959d72-yujie.liu@intel.com
To reproduce:
# build kernel
cd linux
cp config-6.2.0-rc1-00009-gaf7f588d8f73 .config
make HOSTCC=gcc-11 CC=gcc-11 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules
make HOSTCC=gcc-11 CC=gcc-11 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
# 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
View attachment "config-6.2.0-rc1-00009-gaf7f588d8f73" of type "text/plain" (151049 bytes)
View attachment "job-script" of type "text/plain" (4732 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (23744 bytes)
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