Hello, kernel test robot noticed "WARNING:at_kernel/workqueue.c:#workqueue_online_cpu" on: commit: e3485721f97d7230d5fd46d77047a5dc4e6e39c8 ("workqueue: Add workqueue_attrs->__pod_cpumask") https://git.kernel.org/cgit/linux/kernel/git/tj/wq.git affinity-scopes-dbg-invalid-cpu in testcase: xfstests version: xfstests-x86_64-06c027a-1_20230529 with following parameters: disk: 4HDD fs: ext4 fs2: smbv3 test: generic-group-19 compiler: gcc-12 test machine: 4 threads Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz (Skylake) with 32G memory (please refer to attached dmesg/kmsg for entire log/backtrace) +-----------------------------------------------------+------------+------------+ | | d5e2e83891 | e3485721f9 | +-----------------------------------------------------+------------+------------+ | WARNING:at_kernel/workqueue.c:#workqueue_online_cpu | 0 | 14 | | RIP:workqueue_online_cpu | 0 | 14 | | WARNING:at_kernel/workqueue.c:#process_one_work | 0 | 14 | | RIP:process_one_work | 0 | 14 | +-----------------------------------------------------+------------+------------+ 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/202306120920.a932842-oliver.sang@intel.com [ 3.388228][ T21] ------------[ cut here ]------------ [ 3.394990][ T21] WARNING: CPU: 1 PID: 21 at kernel/workqueue.c:5393 workqueue_online_cpu (kernel/workqueue.c:5393 kernel/workqueue.c:5481) [ 3.407780][ T21] Modules linked in: [ 3.412747][ T21] CPU: 1 PID: 21 Comm: cpuhp/1 Not tainted 6.4.0-rc1-00033-ge3485721f97d #1 [ 3.423777][ T21] Hardware name: Dell Inc. OptiPlex 7040/0Y7WYT, BIOS 1.8.1 12/05/2017 [ 3.433776][ T21] RIP: 0010:workqueue_online_cpu (kernel/workqueue.c:5393 kernel/workqueue.c:5481) [ 3.441752][ T21] Code: e8 03 80 3c 18 00 0f 85 c5 00 00 00 48 8b 45 60 48 8d 68 a0 49 39 c6 75 94 4c 89 ff e8 e1 1a 5a 02 e9 34 fc ff ff 0f 0b eb a5 <0f> 0b e9 08 ff ff ff 48 8b 05 ea 32 30 03 4c 8b 7c 24 28 48 bd 00 All code ======== 0: e8 03 80 3c 18 callq 0x183c8008 5: 00 0f add %cl,(%rdi) 7: 85 c5 test %eax,%ebp 9: 00 00 add %al,(%rax) b: 00 48 8b add %cl,-0x75(%rax) e: 45 60 rex.RB (bad) 10: 48 8d 68 a0 lea -0x60(%rax),%rbp 14: 49 39 c6 cmp %rax,%r14 17: 75 94 jne 0xffffffffffffffad 19: 4c 89 ff mov %r15,%rdi 1c: e8 e1 1a 5a 02 callq 0x25a1b02 21: e9 34 fc ff ff jmpq 0xfffffffffffffc5a 26: 0f 0b ud2 28: eb a5 jmp 0xffffffffffffffcf 2a:* 0f 0b ud2 <-- trapping instruction 2c: e9 08 ff ff ff jmpq 0xffffffffffffff39 31: 48 8b 05 ea 32 30 03 mov 0x33032ea(%rip),%rax # 0x3303322 38: 4c 8b 7c 24 28 mov 0x28(%rsp),%r15 3d: 48 rex.W 3e: bd .byte 0xbd ... Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: e9 08 ff ff ff jmpq 0xffffffffffffff0f 7: 48 8b 05 ea 32 30 03 mov 0x33032ea(%rip),%rax # 0x33032f8 e: 4c 8b 7c 24 28 mov 0x28(%rsp),%r15 13: 48 rex.W 14: bd .byte 0xbd ... [ 3.466823][ T21] RSP: 0000:ffffc900001cfcd0 EFLAGS: 00010282 [ 3.474752][ T21] RAX: 00000000ffffffea RBX: dffffc0000000000 RCX: 0000000000000003 [ 3.484775][ T21] RDX: 0000000000000000 RSI: 0000000000000246 RDI: ffff88810d78e094 [ 3.495775][ T21] RBP: ffffed10f3997388 R08: ffff88810d78d7e0 R09: ffff88810c98f168 [ 3.505775][ T21] R10: fffff52000039f52 R11: 0000000000000040 R12: ffff88810d081c50 [ 3.515775][ T21] R13: ffff88810d081c00 R14: ffff88879ccb9c08 R15: ffff88879ccb9940 [ 3.525775][ T21] FS: 0000000000000000(0000) GS:ffff88879cc80000(0000) knlGS:0000000000000000 [ 3.537777][ T21] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.545754][ T21] CR2: 0000000000000000 CR3: 000000081be44001 CR4: 00000000003706e0 [ 3.555775][ T21] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 3.566775][ T21] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 3.576775][ T21] Call Trace: [ 3.580746][ T21] [ 3.584746][ T21] ? workqueue_prepare_cpu (kernel/workqueue.c:5470) [ 3.591752][ T21] ? local_clock (kernel/sched/clock.c:270 kernel/sched/clock.c:307) [ 3.596749][ T21] cpuhp_invoke_callback (arch/x86/include/asm/jump_label.h:27 include/linux/jump_label.h:207 include/trace/events/cpuhp.h:65 kernel/cpu.c:193) [ 3.603751][ T21] ? try_to_wake_up (include/linux/sched.h:2254 kernel/sched/core.c:4312) [ 3.610751][ T21] cpuhp_thread_fun (kernel/cpu.c:815) [ 3.616750][ T21] ? __cpuhp_remove_state (kernel/cpu.c:772) [ 3.622751][ T21] ? _raw_read_unlock_irqrestore (kernel/locking/spinlock.c:161) [ 3.630752][ T21] ? __kthread_parkme (kernel/kthread.c:270) [ 3.636750][ T21] ? schedule (arch/x86/include/asm/preempt.h:85 (discriminator 1) kernel/sched/core.c:6749 (discriminator 1)) [ 3.642749][ T21] ? smpboot_thread_fn (kernel/smpboot.c:112) [ 3.648750][ T21] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) [ 3.654751][ T21] ? sort_range (kernel/smpboot.c:107) [ 3.660748][ T21] kthread (kernel/kthread.c:379) [ 3.665748][ T21] ? kthread_complete_and_exit (kernel/kthread.c:332) [ 3.672752][ T21] ret_from_fork (arch/x86/entry/entry_64.S:314) [ 3.678751][ T21] [ 3.682745][ T21] ---[ end trace 0000000000000000 ]--- [ 3.690931][ T1] #2 [ 1.085404][ T0] masked ExtINT on CPU#2 [ 3.700819][ T1] #3 [ 1.085404][ T0] masked ExtINT on CPU#3 [ 3.709915][ T1] smp: Brought up 1 node, 4 CPUs [ 3.710982][ T1] smpboot: Max logical packages: 1 [ 3.711750][ T1] smpboot: Total of 4 processors activated (25599.84 BogoMIPS) [ 3.810660][ T39] node 0 deferred pages initialised in 95ms [ 3.820827][ T1] devtmpfs: initialized [ 3.826633][ T1] x86/mm: Memory block size: 128MB To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests sudo bin/lkp install job.yaml # job file is attached in this email bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run sudo bin/lkp run generated-yaml-file # 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