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X-MS-Exchange-CrossTenant-OriginalArrivalTime: 03 Feb 2026 13:54:18.9740 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: QFSksX/uppo0DgrkvBmMInCXfMQ2lr1CHD0GF1RuFSAttF35HxpZtYpqmyX0Ex1gfb8/Cwnm5NtxY8wtEby3Aw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA0PR11MB7329 X-OriginatorOrg: intel.com Hello, kernel test robot noticed "Oops:int3:#[##]SMP_KASAN_NOPTI" on: commit: e806b74f91ad2c995a3313d4cc369c85fab1da5f ("[PATCH 2/3] lib/raid6: Optimizing the raid6_select_algo time through asynchronous processing") url: https://github.com/intel-lab-lkp/linux/commits/sunliming-linux-dev/lib-raid6-Divide-the-raid6-algorithm-selection-process-into-two-parts/20260128-185709 base: https://git.kernel.org/cgit/linux/kernel/git/akpm/mm.git mm-nonmm-unstable patch link: https://lore.kernel.org/all/20260128104923.338443-3-sunliming@linux.dev/ patch subject: [PATCH 2/3] lib/raid6: Optimizing the raid6_select_algo time through asynchronous processing in testcase: perf-sanity-tests version: with following parameters: perf_compiler: gcc group: group-01 config: x86_64-rhel-9.4-bpf compiler: gcc-14 test machine: 16 threads 1 sockets Intel(R) Xeon(R) E-2278G CPU @ 3.40GHz (Coffee Lake-E) with 32G 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 | Closes: https://lore.kernel.org/oe-lkp/202602032100.d8e49b6f-lkp@intel.com [ 81.117339][ T479] xor: automatically using best checksumming function avx [ 81.122258][ T109] raid6: avx2x2 gen() 17654 MB/s [ 81.157936][ T109] raid6: avx2x1 gen() 10371 MB/s [ 81.172813][ T109] raid6: using algorithm avx2x2 gen() 17654 MB/s [ 81.205659][ T109] raid6: .... xor() 12927 MB/s, rmw enabled [ 81.221136][ C15] Oops: int3: 0000 [#1] SMP KASAN NOPTI [ 81.221144][ C15] CPU: 15 UID: 0 PID: 109 Comm: kworker/15:0 Tainted: G S 6.19.0-rc6-00161-ge806b74f91ad #1 PREEMPT(full) [ 81.221149][ C15] Tainted: [S]=CPU_OUT_OF_SPEC [ 81.221150][ C15] Hardware name: Intel Corporation Mehlow UP Server Platform/Moss Beach Server, BIOS CNLSE2R1.R00.X188.B13.1903250419 03/25/2019 [ 81.221153][ C15] Workqueue: events benchmark_work_func [raid6_pq] [ 81.221160][ C15] RIP: 0010:benchmark_work_func (recov_avx512.c:?) raid6_pq [ 81.221163][ C15] Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc All code ======== 0: cc int3 1: cc int3 2: cc int3 3: cc int3 4: cc int3 5: cc int3 6: cc int3 7: cc int3 8: cc int3 9: cc int3 a: cc int3 b: cc int3 c: cc int3 d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: cc int3 12: cc int3 13: cc int3 14: cc int3 15: cc int3 16: cc int3 17: cc int3 18: cc int3 19: cc int3 1a: cc int3 1b: cc int3 1c: cc int3 1d: cc int3 1e: cc int3 1f: cc int3 20: cc int3 21: cc int3 22: cc int3 23: cc int3 24: cc int3 25: cc int3 26: cc int3 27: cc int3 28: cc int3 29: cc int3 2a:* cc int3 <-- trapping instruction 2b: cc int3 2c: cc int3 2d: cc int3 2e: cc int3 2f: cc int3 30: cc int3 31: cc int3 32: cc int3 33: cc int3 34: cc int3 35: cc int3 36: cc int3 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: cc int3 3c: cc int3 3d: cc int3 3e: cc int3 3f: cc int3 Code starting with the faulting instruction =========================================== 0: cc int3 1: cc int3 2: cc int3 3: cc int3 4: cc int3 5: cc int3 6: cc int3 7: cc int3 8: cc int3 9: cc int3 a: cc int3 b: cc int3 c: cc int3 d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: cc int3 12: cc int3 13: cc int3 14: cc int3 15: cc int3 [ 81.221166][ C15] RSP: 0018:ffff888101557b58 EFLAGS: 00000282 [ 81.221169][ C15] RAX: 0000000000000029 RBX: 1ffff110202aaf6b RCX: 0000000000000000 [ 81.221171][ C15] RDX: 0000000000000029 RSI: ffffffff81513d9c RDI: ffffed10202aaf5e [ 81.221173][ C15] RBP: ffff88836aad0000 R08: 0000000000000000 R09: fffffbfff0b21df4 [ 81.221175][ C15] R10: ffffffff8590efa7 R11: 0000000000000001 R12: ffff888101557bb8 [ 81.221178][ C15] R13: ffff88836aad8000 R14: ffff888101557bb8 R15: ffff8887887c33c0 [ 81.221180][ C15] FS: 0000000000000000(0000) GS:ffff888801e6a000(0000) knlGS:0000000000000000 [ 81.221182][ C15] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.221185][ C15] CR2: 00007fbfb077d000 CR3: 000000084d2f6001 CR4: 00000000003726f0 [ 81.221187][ C15] Call Trace: [ 81.221189][ C15] [ 81.221194][ C15] ? rcu_is_watching (kbuild/src/consumer/arch/x86/include/asm/atomic.h:23 kbuild/src/consumer/include/linux/atomic/atomic-arch-fallback.h:457 kbuild/src/consumer/include/linux/context_tracking.h:128 kbuild/src/consumer/kernel/rcu/tree.c:751) [ 81.221199][ C15] ? rcu_is_watching (kbuild/src/consumer/arch/x86/include/asm/atomic.h:23 kbuild/src/consumer/include/linux/atomic/atomic-arch-fallback.h:457 kbuild/src/consumer/include/linux/context_tracking.h:128 kbuild/src/consumer/kernel/rcu/tree.c:751) [ 81.221203][ C15] ? lock_acquire (kbuild/src/consumer/include/trace/events/lock.h:24 (discriminator 2) kbuild/src/consumer/kernel/locking/lockdep.c:5831 (discriminator 2)) [ 81.221208][ C15] ? process_one_work (kbuild/src/consumer/arch/x86/include/asm/jump_label.h:37 kbuild/src/consumer/include/trace/events/workqueue.h:110 kbuild/src/consumer/kernel/workqueue.c:3262) The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260203/202602032100.d8e49b6f-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki