[peterz-queue:sched/flat] [sched/fair] 596061ecef: Oops
kernel test robot <[email protected]>
| Newsgroups | dev.linux.lists.oe-lkp,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
Hello,
kernel test robot noticed "Oops" on:
commit: 596061ecef8ab0561e92704bcdc166fb91ecdec1 ("sched/fair: Add newidle balance to pick_task_fair()")
https://git.kernel.org/cgit/linux/kernel/git/peterz/queue.git sched/flat
in testcase: stress-ng
version: stress-ng-x86_64-30f8b2f05-1_20251212
with following parameters:
nr_threads: 100%
testtime: 60s
test: pipeherd
cpufreq_governor: performance
config: x86_64-rhel-9.4
compiler: gcc-14
test machine: 192 threads 2 sockets Intel(R) Xeon(R) 6740E CPU @ 2.4GHz (Sierra Forest) with 256G memory
(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 <[email protected]>
| Closes: https://lore.kernel.org/oe-lkp/[email protected]
[ 368.640460][T10417] #PF: supervisor write access in kernel mode
[ 368.640462][T10417] #PF: error_code(0x0002) - not-present page
[ 368.640465][T10417] PGD 0 P4D 0
[ 368.643193][T10417] Oops: Oops: 0002 [#1] SMP NOPTI
[ 368.643198][T10417] CPU: 8 UID: 0 PID: 10417 Comm: stress-ng-pipeh Tainted: G S 6.19.0-rc6-00148-g596061ecef8a #1 PREEMPTLAZY
[ 368.646302][T10417] Tainted: [S]=CPU_OUT_OF_SPEC
[ 368.646303][T10417] Hardware name: IEIT SYSTEMS NF5180-M8-A0-R0-00/NF5180-M8-A0-R0-00, BIOS 00.14.04 09/23/2024
[ 368.646304][T10417] RIP: 0010:pick_next_task_fair (kernel/sched/sched.h:2673 kernel/sched/fair.c:9114)
[ 368.649951][T10417] Code: 48 89 c3 49 81 be a8 02 00 00 a8 e1 bb 82 0f 85 e5 00 00 00 49 c7 86 a0 02 00 00 00 00 00 00 49 89 dd 49 8b 84 24 88 0a 00 00 <48> 89 83 a0 02 00 00 49 c7 84 24 88 0a 00 00 00 00 00 00 4c 39 f3
All code
========
0: 48 89 c3 mov %rax,%rbx
3: 49 81 be a8 02 00 00 cmpq $0xffffffff82bbe1a8,0x2a8(%r14)
a: a8 e1 bb 82
e: 0f 85 e5 00 00 00 jne 0xf9
14: 49 c7 86 a0 02 00 00 movq $0x0,0x2a0(%r14)
1b: 00 00 00 00
1f: 49 89 dd mov %rbx,%r13
22: 49 8b 84 24 88 0a 00 mov 0xa88(%r12),%rax
29: 00
2a:* 48 89 83 a0 02 00 00 mov %rax,0x2a0(%rbx) <-- trapping instruction
31: 49 c7 84 24 88 0a 00 movq $0x0,0xa88(%r12)
38: 00 00 00 00 00
3d: 4c 39 f3 cmp %r14,%rbx
Code starting with the faulting instruction
===========================================
0: 48 89 83 a0 02 00 00 mov %rax,0x2a0(%rbx)
7: 49 c7 84 24 88 0a 00 movq $0x0,0xa88(%r12)
e: 00 00 00 00 00
13: 4c 39 f3 cmp %r14,%rbx
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260206/[email protected]
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki