INFO: task kcompactd0:30 blocked for more than 143 seconds.
Not tainted 5.16.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kcompactd0 state:D stack:27856 pid: 30 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
io_schedule+0xee/0x170 kernel/sched/core.c:8371
folio_wait_bit_common+0x4f2/0xa60 mm/filemap.c:1371
lock_page include/linux/pagemap.h:796 [inline]
__unmap_and_move mm/migrate.c:980 [inline]
unmap_and_move mm/migrate.c:1204 [inline]
migrate_pages+0xa5a/0x3810 mm/migrate.c:1481
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: ffffffff8bb81120 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
2 locks held by kworker/u4:2/49:
1 lock held by kswapd0/98:
1 lock held by kswapd1/99:
3 locks held by systemd-journal/2966:
1 lock held by systemd-udevd/2971:
1 lock held by systemd-timesyn/3056:
#0: ffff888020139750 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff888020139750 (mapping.invalidate_lock){++++}-{3:3}, at: page_cache_ra_unbounded+0x1b3/0x940 mm/readahead.c:194
2 locks held by in:imklog/6437:
1 lock held by syz-fuzzer/6529:
3 locks held by kworker/1:8/8529:
1 lock held by syz-executor.4/30245:
3 locks held by kworker/0:2/30287:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc3-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:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 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: 49 Comm: kworker/u4:2 Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:lookup_object lib/debugobjects.c:196 [inline]
RIP: 0010:debug_object_activate+0x182/0x3e0 lib/debugobjects.c:663
Code: 00 00 00 00 fc ff df 48 8d 7d 18 83 c3 01 48 89 f8 48 c1 e8 03 42 80 3c 28 00 0f 85 c6 01 00 00 4c 3b 65 18 0f 84 bf 00 00 00 <48> 89 e8 48 c1 e8 03 42 80 3c 28 00 0f 85 c6 01 00 00 48 8b 6d 00
RSP: 0018:ffffc900012a7aa8 EFLAGS: 00000006
RAX: 1ffff110038c3ea4 RBX: 0000000000000003 RCX: ffffffff815c5600
RDX: 1ffffffff20d2cb9 RSI: 0000000000000002 RDI: ffff88801c61f520
RBP: ffff88801c61f508 R08: ffffffff906965b8 R09: 0000000000000003
R10: fffff52000254f43 R11: 0000000000000000 R12: ffff88803f681720
R13: dffffc0000000000 R14: 1ffff92000254f57 R15: ffffffff89ade040
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe005858303 CR3: 000000001f860000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
debug_timer_activate kernel/time/timer.c:729 [inline]
__mod_timer+0x77d/0xe30 kernel/time/timer.c:1050
__queue_delayed_work+0x1a7/0x270 kernel/workqueue.c:1678
queue_delayed_work_on+0x105/0x120 kernel/workqueue.c:1703
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess), 6 bytes skipped:
0: df 48 8d fisttps -0x73(%rax)
3: 7d 18 jge 0x1d
5: 83 c3 01 add $0x1,%ebx
8: 48 89 f8 mov %rdi,%rax
b: 48 c1 e8 03 shr $0x3,%rax
f: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
14: 0f 85 c6 01 00 00 jne 0x1e0
1a: 4c 3b 65 18 cmp 0x18(%rbp),%r12
1e: 0f 84 bf 00 00 00 je 0xe3
* 24: 48 89 e8 mov %rbp,%rax <-- trapping instruction
27: 48 c1 e8 03 shr $0x3,%rax
2b: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
30: 0f 85 c6 01 00 00 jne 0x1fc
36: 48 8b 6d 00 mov 0x0(%rbp),%rbp