INFO: task kcompactd0:30 blocked for more than 143 seconds.
Not tainted 5.15.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kcompactd0 state:D stack:25936 pid: 30 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6250
schedule+0x12b/0x1f0 kernel/sched/core.c:6323
io_schedule+0x83/0x100 kernel/sched/core.c:8368
folio_wait_bit_common+0x8aa/0xe00 mm/filemap.c:1371
lock_page include/linux/pagemap.h:747 [inline]
__unmap_and_move+0x9d9/0xda0 mm/migrate.c:986
unmap_and_move+0x321/0xd70 mm/migrate.c:1210
migrate_pages+0x562/0x16f0 mm/migrate.c:1487
compact_zone+0x2d23/0x3d10 mm/compaction.c:2399
kcompactd_do_work mm/compaction.c:2839 [inline]
kcompactd+0x937/0x2920 mm/compaction.c:2941
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
Showing all locks held in the system:
2 locks held by systemd/1:
#0: ffff8881408d7338 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff8881408d7338 (mapping.invalidate_lock){++++}-{3:3}, at: page_cache_ra_unbounded+0x1b8/0x9f0 mm/readahead.c:194
#1: ffffffff8cbe1a28 (pcpu_drain_mutex){+.+.}-{3:3}, at: __drain_all_pages+0x58/0x690 mm/page_alloc.c:3181
1 lock held by khungtaskd/27:
#0: ffffffff8cb1d900 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by kswapd0/97:
1 lock held by kswapd1/98:
2 locks held by kworker/u4:4/993:
#0: ffff8880b9a395d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:478
#1: ffff8880b9a27888 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x46c/0x780 kernel/sched/psi.c:871
2 locks held by systemd-journal/2964:
2 locks held by systemd-udevd/2971:
1 lock held by systemd-timesyn/3058:
#0: ffff88801ed1cb58 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff88801ed1cb58 (mapping.invalidate_lock){++++}-{3:3}, at: page_cache_ra_unbounded+0x1b8/0x9f0 mm/readahead.c:194
2 locks held by cron/6214:
1 lock held by in:imklog/6222:
3 locks held by rs:main Q:Reg/6223:
2 locks held by syz-fuzzer/6526:
3 locks held by syz-fuzzer/6529:
3 locks held by kworker/0:7/8507:
1 lock held by syz-executor.3/31134:
3 locks held by kworker/1:4/31158:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc82/0xcd0 kernel/hung_task.c:295
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 44 Comm: kworker/u4:2 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:__default_send_IPI_dest_field+0x83/0xe0 arch/x86/kernel/apic/ipi.c:173
Code: 00 66 0f 1f 44 00 00 f7 04 25 00 c3 5f ff 00 10 00 00 75 d3 41 c1 e7 18 44 89 3c 25 10 c3 5f ff 44 09 f3 89 1c 25 00 c3 5f ff <5b> 41 5e 41 5f 5d c3 48 c7 c0 e0 8a 5a 8c 48 c1 e8 03 48 bd 00 00
RSP: 0018:ffffc9000114f718 EFLAGS: 00000002
RAX: ffffffff818aec00 RBX: 00000000000008fb RCX: ffff888012105700
RDX: 0000000000000800 RSI: 00000000000000fb RDI: 0000000000000002
RBP: fffffbffffebf860 R08: ffffffff818aec50 R09: ffffffff84395940
R10: 0000000000000009 R11: ffff888012105700 R12: 1ffff92000229eec
R13: dffffc0000000000 R14: 0000000000000800 R15: 0000000002000000
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000007c8b00 CR3: 000000000c88e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
_flat_send_IPI_mask+0xed/0x190 arch/x86/kernel/apic/apic_flat_64.c:56
smp_call_function_many_cond+0x835/0xda0 kernel/smp.c:949
on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1135
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1112 [inline]
text_poke_bp_batch+0x66c/0x940 arch/x86/kernel/alternative.c:1350
text_poke_flush arch/x86/kernel/alternative.c:1451 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1458
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
static_key_disable_cpuslocked+0xcc/0x1b0 kernel/jump_label.c:207
static_key_disable+0x16/0x20 kernel/jump_label.c:215
toggle_allocation_gate+0x3c8/0x460 mm/kfence/core.c:746
process_one_work+0x853/0x1140 kernel/workqueue.c:2298
worker_thread+0xac1/0x1320 kernel/workqueue.c:2445
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
6: f7 04 25 00 c3 5f ff testl $0x1000,0xffffffffff5fc300
d: 00 10 00 00
11: 75 d3 jne 0xffffffe6
13: 41 c1 e7 18 shl $0x18,%r15d
17: 44 89 3c 25 10 c3 5f mov %r15d,0xffffffffff5fc310
1e: ff
1f: 44 09 f3 or %r14d,%ebx
22: 89 1c 25 00 c3 5f ff mov %ebx,0xffffffffff5fc300
* 29: 5b pop %rbx <-- trapping instruction
2a: 41 5e pop %r14
2c: 41 5f pop %r15
2e: 5d pop %rbp
2f: c3 retq
30: 48 c7 c0 e0 8a 5a 8c mov $0xffffffff8c5a8ae0,%rax
37: 48 c1 e8 03 shr $0x3,%rax
3b: 48 rex.W
3c: bd .byte 0xbd