=============================
[ BUG: Invalid wait context ]
6.13.0-syzkaller-07259-g0f8e26b38d7a #0 Tainted: G U
-----------------------------
syz.2.518/8537 is trying to lock:
ffff88813fffc298 (&zone->lock){-.-.}-{3:3}, at: rmqueue_buddy mm/page_alloc.c:2909 [inline]
ffff88813fffc298 (&zone->lock){-.-.}-{3:3}, at: rmqueue mm/page_alloc.c:3082 [inline]
ffff88813fffc298 (&zone->lock){-.-.}-{3:3}, at: get_page_from_freelist+0xbbe/0x2f80 mm/page_alloc.c:3473
other info that might help us debug this:
context-{2:2}
2 locks held by syz.2.518/8537:
#0: ffff88807d67c7e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:190 [inline]
#0: ffff88807d67c7e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x10c/0xba0 mm/mmap.c:1656
#1: ffff8880b8644d58 (&pcp->lock){+.+.}-{3:3}, at: spin_trylock include/linux/spinlock.h:361 [inline]
#1: ffff8880b8644d58 (&pcp->lock){+.+.}-{3:3}, at: free_unref_folios+0x52c/0x14f0 mm/page_alloc.c:2759
stack backtrace:
CPU: 0 UID: 0 PID: 8537 Comm: syz.2.518 Tainted: G U 6.13.0-syzkaller-07259-g0f8e26b38d7a #0
Tainted: [U]=USER
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+0x116/0x1f0 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+0x878/0x3c40 kernel/locking/lockdep.c:5178
lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5851
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
rmqueue_buddy mm/page_alloc.c:2909 [inline]
rmqueue mm/page_alloc.c:3082 [inline]
get_page_from_freelist+0xbbe/0x2f80 mm/page_alloc.c:3473
__alloc_pages_noprof+0x221/0x2470 mm/page_alloc.c:4753
alloc_pages_mpol_noprof+0x2c8/0x620 mm/mempolicy.c:2269
stack_depot_save_flags+0x8e0/0x9e0 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
__run_posix_cpu_timers kernel/time/posix-cpu-timers.c:1223 [inline]
run_posix_cpu_timers+0x69f/0x7d0 kernel/time/posix-cpu-timers.c:1422
update_process_times+0x1a1/0x2d0 kernel/time/timer.c:2522
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:1738 [inline]
__hrtimer_run_queues+0x5fb/0xae0 kernel/time/hrtimer.c:1802
hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1864
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+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:free_unref_page_commit+0x16/0xfe0 mm/page_alloc.c:2598
Code: 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 b8 00 00 00 00 00 fc ff df 41 57 49 89 d1 41 56 45 89 c6 41 55 <41> 89 cd 41 54 49 89 fc 48 8d 7e 55 55 48 89 fa 53 48 89 f3 48 c1
RSP: 0018:ffffc900057f7190 EFLAGS: 00000202
RAX: dffffc0000000000 RBX: ffff88813fffbc80 RCX: 0000000000000001
RDX: ffffea000141f3c0 RSI: ffff8880b8644d40 RDI: ffff88813fffbc80
RBP: ffff8880b8644d40 R08: 0000000000000000 R09: ffffea000141f3c0
R10: ffffffff905fe017 R11: 0000000000000000 R12: ffff88813fffb540
R13: ffffea000141f3c0 R14: 0000000000000000 R15: dffffc0000000000
free_unref_folios+0x5aa/0x14f0 mm/page_alloc.c:2777
folios_put_refs+0x587/0x7b0 mm/swap.c:962
free_pages_and_swap_cache+0x36d/0x510 mm/swap_state.c:332
__tlb_batch_free_encoded_pages+0xf9/0x290 mm/mmu_gather.c:136
tlb_batch_pages_flush mm/mmu_gather.c:149 [inline]
tlb_flush_mmu_free mm/mmu_gather.c:366 [inline]
tlb_flush_mmu+0xe9/0x590 mm/mmu_gather.c:373
zap_pte_range mm/memory.c:1715 [inline]
zap_pmd_range mm/memory.c:1754 [inline]
zap_pud_range mm/memory.c:1783 [inline]
zap_p4d_range mm/memory.c:1804 [inline]
unmap_page_range+0x1c6e/0x3cf0 mm/memory.c:1825
unmap_single_vma+0x194/0x2b0 mm/memory.c:1871
unmap_vmas+0x22f/0x490 mm/memory.c:1915
exit_mmap+0x1c6/0xba0 mm/mmap.c:1672
__mmput+0x12a/0x410 kernel/fork.c:1345
mmput+0x62/0x70 kernel/fork.c:1367
exit_mm kernel/exit.c:570 [inline]
do_exit+0x9ba/0x2d70 kernel/exit.c:925
do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
get_signal+0x2576/0x2610 kernel/signal.c:3036
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdf1df8cd29
Code: Unable to access opcode bytes at 0x7fdf1df8ccff.
RSP: 002b:00007fdf1edb70e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fdf1e1a6168 RCX: 00007fdf1df8cd29
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fdf1e1a6168
RBP: 00007fdf1e1a6160 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fdf1e1a616c
R13: 0000000000000000 R14: 00007fff7cb87980 R15: 00007fff7cb87a68
----------------
Code disassembly (best guess):
0: 0f 1f 40 00 nopl 0x0(%rax)
4: 90 nop
5: 90 nop
6: 90 nop
7: 90 nop
8: 90 nop
9: 90 nop
a: 90 nop
b: 90 nop
c: 90 nop
d: 90 nop
e: 90 nop
f: 90 nop
10: 90 nop
11: 90 nop
12: 90 nop
13: 90 nop
14: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
1b: fc ff df
1e: 41 57 push %r15
20: 49 89 d1 mov %rdx,%r9
23: 41 56 push %r14
25: 45 89 c6 mov %r8d,%r14d
28: 41 55 push %r13
* 2a: 41 89 cd mov %ecx,%r13d <-- trapping instruction
2d: 41 54 push %r12
2f: 49 89 fc mov %rdi,%r12
32: 48 8d 7e 55 lea 0x55(%rsi),%rdi
36: 55 push %rbp
37: 48 89 fa mov %rdi,%rdx
3a: 53 push %rbx
3b: 48 89 f3 mov %rsi,%rbx
3e: 48 rex.W
3f: c1 .byte 0xc1