============================= [ BUG: Invalid wait context ] 6.13.0-syzkaller-07078-gb46c89c08f41 #0 Not tainted ----------------------------- syz.2.45/6013 is trying to lock: ffff88813fffc298 (&zone->lock){-.-.}-{3:3}, at: rmqueue_bulk mm/page_alloc.c:2309 [inline] ffff88813fffc298 (&zone->lock){-.-.}-{3:3}, at: __rmqueue_pcplist+0x4a2/0x2a90 mm/page_alloc.c:3003 other info that might help us debug this: context-{2:2} 2 locks held by syz.2.45/6013: #0: ffff88807e3f1fe0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:190 [inline] #0: ffff88807e3f1fe0 (&mm->mmap_lock){++++}-{4:4}, at: __mm_populate+0x1b0/0x460 mm/gup.c:2014 #1: ffff8880b8744958 (&pcp->lock){+.+.}-{3:3}, at: spin_trylock include/linux/spinlock.h:361 [inline] #1: ffff8880b8744958 (&pcp->lock){+.+.}-{3:3}, at: rmqueue_pcplist mm/page_alloc.c:3032 [inline] #1: ffff8880b8744958 (&pcp->lock){+.+.}-{3:3}, at: rmqueue mm/page_alloc.c:3076 [inline] #1: ffff8880b8744958 (&pcp->lock){+.+.}-{3:3}, at: get_page_from_freelist+0x7d3/0x37a0 mm/page_alloc.c:3473 stack backtrace: CPU: 1 UID: 0 PID: 6013 Comm: syz.2.45 Not tainted 6.13.0-syzkaller-07078-gb46c89c08f41 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 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 rmqueue_bulk mm/page_alloc.c:2309 [inline] __rmqueue_pcplist+0x4a2/0x2a90 mm/page_alloc.c:3003 rmqueue_pcplist mm/page_alloc.c:3045 [inline] rmqueue mm/page_alloc.c:3076 [inline] get_page_from_freelist+0x886/0x37a0 mm/page_alloc.c:3473 __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 __run_posix_cpu_timers kernel/time/posix-cpu-timers.c:1223 [inline] run_posix_cpu_timers+0x6ac/0x810 kernel/time/posix-cpu-timers.c:1422 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+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:100 [inline] RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:227 [inline] RIP: 0010:unwind_next_frame+0x6b5/0x22d0 arch/x86/kernel/unwind_orc.c:494 Code: 00 74 08 4c 89 f7 e8 ca 46 ba 00 49 8b 2e e9 32 02 00 00 4d 89 ec 4d 89 ee 48 89 e8 4c 29 f0 48 89 c1 48 c1 f9 02 48 c1 e8 3f <48> 01 c8 48 83 e0 fe 49 8d 1c 46 48 89 d8 48 c1 e8 03 48 b9 00 00 RSP: 0018:ffffc9000492e690 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff91508814 RCX: 0000000000000000 RDX: 00000000000af873 RSI: ffffffff90b122c0 RDI: ffffffff816bb4a0 RBP: ffffffff90363f0c R08: 0000000000000001 R09: ffffc9000492e850 R10: ffffc9000492e7b0 R11: ffffffff81ab1a30 R12: ffffffff90363f0c R13: ffffffff90363f0c R14: ffffffff90363f0c R15: ffffffff82181b31 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 save_stack+0xfb/0x1f0 mm/page_owner.c:156 __set_page_owner+0x92/0x800 mm/page_owner.c:320 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 folio_alloc_mpol_noprof+0x36/0x50 mm/mempolicy.c:2288 shmem_alloc_folio mm/shmem.c:1799 [inline] shmem_alloc_and_add_folio+0x4a0/0x1080 mm/shmem.c:1838 shmem_get_folio_gfp+0x621/0x1840 mm/shmem.c:2358 shmem_fault+0x220/0x5b0 mm/shmem.c:2559 __do_fault+0x135/0x390 mm/memory.c:4908 do_read_fault mm/memory.c:5323 [inline] do_fault mm/memory.c:5457 [inline] do_pte_missing mm/memory.c:3980 [inline] handle_pte_fault+0x39eb/0x5ed0 mm/memory.c:5820 __handle_mm_fault mm/memory.c:5963 [inline] handle_mm_fault+0x11f5/0x1d50 mm/memory.c:6131 faultin_page mm/gup.c:1196 [inline] __get_user_pages+0x1c82/0x49e0 mm/gup.c:1494 populate_vma_page_range+0x264/0x330 mm/gup.c:1932 __mm_populate+0x27a/0x460 mm/gup.c:2035 mm_populate include/linux/mm.h:3397 [inline] vm_mmap_pgoff+0x303/0x430 mm/util.c:580 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f37a1b8cd29 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f37a29e3038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f37a1da5fa0 RCX: 00007f37a1b8cd29 RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 00007f37a1c0e2a0 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f37a1da5fa0 R15: 00007f37a1ecfa28 ---------------- Code disassembly (best guess): 0: 00 74 08 4c add %dh,0x4c(%rax,%rcx,1) 4: 89 f7 mov %esi,%edi 6: e8 ca 46 ba 00 call 0xba46d5 b: 49 8b 2e mov (%r14),%rbp e: e9 32 02 00 00 jmp 0x245 13: 4d 89 ec mov %r13,%r12 16: 4d 89 ee mov %r13,%r14 19: 48 89 e8 mov %rbp,%rax 1c: 4c 29 f0 sub %r14,%rax 1f: 48 89 c1 mov %rax,%rcx 22: 48 c1 f9 02 sar $0x2,%rcx 26: 48 c1 e8 3f shr $0x3f,%rax * 2a: 48 01 c8 add %rcx,%rax <-- trapping instruction 2d: 48 83 e0 fe and $0xfffffffffffffffe,%rax 31: 49 8d 1c 46 lea (%r14,%rax,2),%rbx 35: 48 89 d8 mov %rbx,%rax 38: 48 c1 e8 03 shr $0x3,%rax 3c: 48 rex.W 3d: b9 .byte 0xb9