============================= [ BUG: Invalid wait context ] 6.12.0-syzkaller-10296-gaaf20f870da0 #0 Not tainted ----------------------------- udevd/5373 is trying to lock: ffffffff8e3a41f8 (stack_list_lock){-.-.}-{3:3}, at: add_stack_record_to_list mm/page_owner.c:182 [inline] ffffffff8e3a41f8 (stack_list_lock){-.-.}-{3:3}, at: inc_stack_record_count mm/page_owner.c:214 [inline] ffffffff8e3a41f8 (stack_list_lock){-.-.}-{3:3}, at: __set_page_owner+0x3ea/0x560 mm/page_owner.c:329 other info that might help us debug this: context-{2:2} 1 lock held by udevd/5373: #0: ffff88806a93ebd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:598 stack backtrace: CPU: 3 UID: 0 PID: 5373 Comm: udevd Not tainted 6.12.0-syzkaller-10296-gaaf20f870da0 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_lock_invalid_wait_context kernel/locking/lockdep.c:4826 [inline] check_wait_context kernel/locking/lockdep.c:4898 [inline] __lock_acquire+0x878/0x3c40 kernel/locking/lockdep.c:5176 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162 add_stack_record_to_list mm/page_owner.c:182 [inline] inc_stack_record_count mm/page_owner.c:214 [inline] __set_page_owner+0x3ea/0x560 mm/page_owner.c:329 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1556 prep_new_page mm/page_alloc.c:1564 [inline] get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3474 __alloc_pages_noprof+0x223/0x25a0 mm/page_alloc.c:4751 alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2265 stack_depot_save_flags+0x566/0x8f0 lib/stackdepot.c:627 kasan_save_stack+0x42/0x60 mm/kasan/common.c:48 __kasan_record_aux_stack+0xba/0xd0 mm/kasan/generic.c:544 task_work_add+0xc0/0x3b0 kernel/task_work.c:77 task_tick_numa kernel/sched/fair.c:3607 [inline] task_tick_fair+0x524/0x8e0 kernel/sched/fair.c:13054 sched_tick+0x1dd/0x4f0 kernel/sched/core.c:5652 update_process_times+0x19c/0x2d0 kernel/time/timer.c:2524 tick_sched_handle kernel/time/tick-sched.c:276 [inline] tick_nohz_handler+0x376/0x530 kernel/time/tick-sched.c:297 __run_hrtimer kernel/time/hrtimer.c:1739 [inline] __hrtimer_run_queues+0x5fb/0xae0 kernel/time/hrtimer.c:1803 hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1865 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0033:0x7f453b0b65a6 Code: 8b 54 24 04 48 8b 74 24 08 48 89 df ff 90 80 00 00 00 48 85 c0 78 09 48 89 83 90 00 00 00 eb 04 48 83 c8 ff 48 83 c4 10 5b c3 <8b> 7f 70 e9 ca 3d 06 00 53 48 89 fb e8 0b 21 00 00 48 85 c0 74 1f RSP: 002b:00007ffef1132928 EFLAGS: 00000202 RAX: 00007f453b1ee460 RBX: 000055e1b7a8ec50 RCX: 0000000000000c00 RDX: 00007f453b1ed860 RSI: 000055e1b7abd550 RDI: 000055e1b7a8ec50 RBP: 0000000000000000 R08: 000055e1b7abd550 R09: 0000000000000010 R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000 R13: 000055e1b7af8300 R14: 00007ffef1132c78 R15: 0000000000000000