============================= [ BUG: Invalid wait context ] 6.13.0-syzkaller-07644-gc2da8b3f914f #0 Not tainted ----------------------------- syz.0.0/5328 is trying to lock: ffffffff8ea70198 (stack_list_lock){-.-.}-{3:3}, at: add_stack_record_to_list mm/page_owner.c:182 [inline] ffffffff8ea70198 (stack_list_lock){-.-.}-{3:3}, at: inc_stack_record_count mm/page_owner.c:214 [inline] ffffffff8ea70198 (stack_list_lock){-.-.}-{3:3}, at: __set_page_owner+0x5cb/0x800 mm/page_owner.c:329 other info that might help us debug this: context-{2:2} 1 lock held by syz.0.0/5328: #0: ffff88801fc3e8d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598 stack backtrace: CPU: 0 UID: 0 PID: 5328 Comm: syz.0.0 Not tainted 6.13.0-syzkaller-07644-gc2da8b3f914f #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+0x241/0x360 lib/dump_stack.c:120 print_lock_invalid_wait_context kernel/locking/lockdep.c:4828 [inline] check_wait_context kernel/locking/lockdep.c:4900 [inline] __lock_acquire+0x15a8/0x2100 kernel/locking/lockdep.c:5178 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 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+0x5cb/0x800 mm/page_owner.c:329 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1558 prep_new_page mm/page_alloc.c:1566 [inline] get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3476 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4753 alloc_pages_mpol_noprof+0x3e1/0x780 mm/mempolicy.c:2269 stack_depot_save_flags+0x72d/0x940 lib/stackdepot.c:627 kasan_save_stack+0x4f/0x60 mm/kasan/common.c:48 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:544 task_work_add+0xd9/0x490 kernel/task_work.c:77 task_tick_numa kernel/sched/fair.c:3614 [inline] task_tick_fair+0x30d/0x4e0 kernel/sched/fair.c:13074 sched_tick+0x21e/0x660 kernel/sched/core.c:5660 update_process_times+0x276/0x2f0 kernel/time/timer.c:2520 tick_sched_handle kernel/time/tick-sched.c:276 [inline] tick_nohz_handler+0x37c/0x500 kernel/time/tick-sched.c:297 __run_hrtimer kernel/time/hrtimer.c:1738 [inline] __hrtimer_run_queues+0x551/0xd30 kernel/time/hrtimer.c:1802 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1864 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x110/0x420 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: 0033:0x7f0ada46325c Code: 0a bf e8 03 00 00 e8 43 9a 12 00 48 8b 05 4c 25 e7 00 8b 40 08 85 c0 74 e8 bf 02 00 00 00 e8 9b ca fe ff 48 8b 15 4c ee 33 00 <48> 8b 02 48 83 f8 02 74 f7 48 8b 02 48 83 f8 03 0f 84 6a 0a 00 00 RSP: 002b:00007fff26500c50 EFLAGS: 00000246 RAX: 0000000000000002 RBX: 0000000000010000 RCX: 00007f0ada628097 RDX: 00007f0ad91ff000 RSI: 00007f0ada62808d RDI: 00007f0ada5ead08 RBP: 0000000000dffff0 R08: 0000000000000000 R09: 00007fff26500ae7 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f0ada776f68 R13: 00007f0ada776260 R14: 00007fff26500f00 R15: 00007fff26500f00