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:28032 pid: 30 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6250
schedule+0xd2/0x260 kernel/sched/core.c:6323
io_schedule+0xee/0x170 kernel/sched/core.c:8368
folio_wait_bit_common+0x4f2/0xa60 mm/filemap.c:1371
lock_page include/linux/pagemap.h:747 [inline]
__unmap_and_move mm/migrate.c:986 [inline]
unmap_and_move mm/migrate.c:1210 [inline]
migrate_pages+0xa5a/0x3810 mm/migrate.c:1487
compact_zone+0x1abb/0x3860 mm/compaction.c:2399
kcompactd_do_work+0x2c9/0x730 mm/compaction.c:2839
kcompactd+0x86b/0xf30 mm/compaction.c:2941
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8b980ea0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by khugepaged/33:
1 lock held by kswapd0/98:
1 lock held by kswapd1/99:
1 lock held by in:imklog/6235:
3 locks held by rs:main Q:Reg/6236:
1 lock held by syz-executor.5/8012:
#0: ffff888146235cc8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff888146235cc8 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0x1b3/0x940 mm/readahead.c:194
=============================================
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+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 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+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 98 Comm: kswapd0 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:check_kcov_mode kernel/kcov.c:166 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x7/0x60 kernel/kcov.c:200
Code: 45 00 5d be 03 00 00 00 e9 e6 9f 63 02 66 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 65 8b 05 09 70 8b 7e <89> c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 40 70 02 00 a9
RSP: 0018:ffffc90000007cb0 EFLAGS: 00000046
RAX: 0000000000000101 RBX: ffff888025978800 RCX: 0000000000000100
RDX: 1ffff11006ff92dc RSI: ffffffff814b7910 RDI: 0000000000000003
RBP: ffff888037fc96e0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff814b7dbe R11: 0000000000000000 R12: ffff888037fc96d8
R13: 0000000000000007 R14: ffffffff814bc580 R15: ffff88814aad2000
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007febf047c000 CR3: 000000002622a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__queue_work+0x443/0xee0 kernel/workqueue.c:1505
call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1461 [inline]
__run_timers.part.0+0x49f/0xa20 kernel/time/timer.c:1734
__run_timers kernel/time/timer.c:1715 [inline]
run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747
__do_softirq+0x29b/0x9c2 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:shrink_page_list+0x3ed/0x6730 mm/vmscan.c:1500
Code: e8 88 ba d4 ff 4c 89 ef e8 90 5d ff ff be 08 00 00 00 48 89 c7 48 89 c3 e8 80 ec 1a 00 f0 48 0f ba 2b 00 0f 92 c3 31 ff 89 de 3e be d4 ff 84 db 0f 85 6d 08 00 00 e8 51 ba d4 ff 4c 89 f2 48
RSP: 0018:ffffc90002017638 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffffea0001463301 RCX: ffffffff81a24580
RDX: fffff9400028c661 RSI: 0000000001463301 RDI: 0000000000000000
RBP: ffffea0001463310 R08: 0000000000000001 R09: ffffea0001463307
R10: fffff9400028c660 R11: 0000000000000000 R12: ffffc90002017918
R13: ffffea0001463300 R14: ffffea0001463308 R15: ffffea0001463300
shrink_inactive_list mm/vmscan.c:2394 [inline]
shrink_list mm/vmscan.c:2621 [inline]
shrink_lruvec+0xc9b/0x2660 mm/vmscan.c:2940
shrink_node_memcgs mm/vmscan.c:3129 [inline]
shrink_node+0x858/0x1eb0 mm/vmscan.c:3252
kswapd_shrink_node mm/vmscan.c:4022 [inline]
balance_pgdat+0x8a0/0x1490 mm/vmscan.c:4213
kswapd+0x5ff/0xe10 mm/vmscan.c:4473
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 45 00 5d be add %r11b,-0x42(%r13)
4: 03 00 add (%rax),%eax
6: 00 00 add %al,(%rax)
8: e9 e6 9f 63 02 jmpq 0x2639ff3
d: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
13: 48 8b be b0 01 00 00 mov 0x1b0(%rsi),%rdi
1a: e8 b4 ff ff ff callq 0xffffffd3
1f: 31 c0 xor %eax,%eax
21: c3 retq
22: 90 nop
23: 65 8b 05 09 70 8b 7e mov %gs:0x7e8b7009(%rip),%eax # 0x7e8b7033
* 2a: 89 c1 mov %eax,%ecx <-- trapping instruction
2c: 48 8b 34 24 mov (%rsp),%rsi
30: 81 e1 00 01 00 00 and $0x100,%ecx
36: 65 48 8b 14 25 40 70 mov %gs:0x27040,%rdx
3d: 02 00
3f: a9 .byte 0xa9