=============================
[ BUG: Invalid wait context ]
6.12.0-rc5-next-20241031-syzkaller #0 Not tainted
-----------------------------
syz.5.314/7533 is trying to lock:
ffff88813fffc298 (&zone->lock){-.-.}-{3:3}, at: rmqueue_buddy mm/page_alloc.c:2928 [inline]
ffff88813fffc298 (&zone->lock){-.-.}-{3:3}, at: rmqueue mm/page_alloc.c:3101 [inline]
ffff88813fffc298 (&zone->lock){-.-.}-{3:3}, at: get_page_from_freelist+0xb60/0x3870 mm/page_alloc.c:3492
other info that might help us debug this:
context-{2:2}
3 locks held by syz.5.314/7533:
#0: ffff88806324a420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88806366e708 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:852 [inline]
#1: ffff88806366e708 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: do_unlinkat+0x26a/0x830 fs/namei.c:4520
#2: ffff8880b8644618 (&pcp->lock){+.+.}-{3:3}, at: spin_trylock include/linux/spinlock.h:361 [inline]
#2: ffff8880b8644618 (&pcp->lock){+.+.}-{3:3}, at: rmqueue_pcplist mm/page_alloc.c:3051 [inline]
#2: ffff8880b8644618 (&pcp->lock){+.+.}-{3:3}, at: rmqueue mm/page_alloc.c:3095 [inline]
#2: ffff8880b8644618 (&pcp->lock){+.+.}-{3:3}, at: get_page_from_freelist+0x7e2/0x3870 mm/page_alloc.c:3492
stack backtrace:
CPU: 0 UID: 0 PID: 7533 Comm: syz.5.314 Not tainted 6.12.0-rc5-next-20241031-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
<IRQ>
__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:4826 [inline]
check_wait_context kernel/locking/lockdep.c:4898 [inline]
__lock_acquire+0x15a8/0x2100 kernel/locking/lockdep.c:5176
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
rmqueue_buddy mm/page_alloc.c:2928 [inline]
rmqueue mm/page_alloc.c:3101 [inline]
get_page_from_freelist+0xb60/0x3870 mm/page_alloc.c:3492
__alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4771
alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
stack_depot_save_flags+0x666/0x830 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:1219 [inline]
run_posix_cpu_timers+0x6ac/0x810 kernel/time/posix-cpu-timers.c:1418
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:1691 [inline]
__hrtimer_run_queues+0x551/0xd50 kernel/time/hrtimer.c:1755
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817
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
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 1e ca 31 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 53 9e 95 f5 65 8b 05 74 43 36 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc9000322e6c0 EFLAGS: 00000206
RAX: 17152d909170b000 RBX: 1ffff92000645cdc RCX: ffffffff8170c69a
RDX: dffffc0000000000 RSI: ffffffff8c0ad3a0 RDI: 0000000000000001
RBP: ffffc9000322e748 R08: ffffffff942cd847 R09: 1ffffffff2859b08
R10: dffffc0000000000 R11: fffffbfff2859b09 R12: dffffc0000000000
R13: 1ffff92000645cd8 R14: ffffc9000322e6e0 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
rmqueue_bulk mm/page_alloc.c:2347 [inline]
__rmqueue_pcplist+0x22e8/0x2b70 mm/page_alloc.c:3022
rmqueue_pcplist mm/page_alloc.c:3064 [inline]
rmqueue mm/page_alloc.c:3095 [inline]
get_page_from_freelist+0x895/0x3870 mm/page_alloc.c:3492
__alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4771
alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
stack_depot_save_flags+0x666/0x830 lib/stackdepot.c:627
kasan_save_stack mm/kasan/common.c:48 [inline]
kasan_save_track+0x51/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:319 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4104 [inline]
slab_alloc_node mm/slub.c:4153 [inline]
kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4160
mempool_alloc_noprof+0x197/0x5a0 mm/mempool.c:402
bio_alloc_bioset+0x26f/0x1130 block/bio.c:554
bio_alloc include/linux/bio.h:374 [inline]
submit_bh_wbc+0x275/0x580 fs/buffer.c:2794
ext4_read_bh_lock+0x8d/0xc0 fs/ext4/super.c:211
ext4_bread_batch+0x24c/0x4e0 fs/ext4/inode.c:937
__ext4_find_entry+0x1051/0x1b30 fs/ext4/namei.c:1627
ext4_lookup_entry fs/ext4/namei.c:1729 [inline]
ext4_lookup+0x15f/0x750 fs/ext4/namei.c:1797
lookup_one_qstr_excl+0x11f/0x260 fs/namei.c:1633
do_unlinkat+0x297/0x830 fs/namei.c:4521
do_coredump+0x20e3/0x3100 fs/coredump.c:669
get_signal+0x13fc/0x1740 kernel/signal.c:2869
arch_do_signal_or_restart+0x96/0x860 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:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6ce317e719
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:00007f6ce15f6038 EFLAGS: 00000246 ORIG_RAX: 00000000000000df
RAX: 0000000000000000 RBX: 00007f6ce3335f80 RCX: 00007f6ce317e719
RDX: 00000000200000c0 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 00007f6ce31f132e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f6ce3335f80 R15: 00007ffdd07ea2b8
</TASK>
----------------
Code disassembly (best guess):
0: 9c pushf
1: 8f 44 24 20 pop 0x20(%rsp)
5: 42 80 3c 23 00 cmpb $0x0,(%rbx,%r12,1)
a: 74 08 je 0x14
c: 4c 89 f7 mov %r14,%rdi
f: e8 1e ca 31 f6 call 0xf631ca32
14: f6 44 24 21 02 testb $0x2,0x21(%rsp)
19: 75 52 jne 0x6d
1b: 41 f7 c7 00 02 00 00 test $0x200,%r15d
22: 74 01 je 0x25
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 53 9e 95 f5 call 0xf5959e82 <-- trapping instruction
2f: 65 8b 05 74 43 36 74 mov %gs:0x74364374(%rip),%eax # 0x743643aa
36: 85 c0 test %eax,%eax
38: 74 43 je 0x7d
3a: 48 rex.W
3b: c7 .byte 0xc7
3c: 04 24 add $0x24,%al
3e: 0e (bad)
3f: 36 ss