INFO: task kcompactd0:30 blocked for more than 143 seconds.
Not tainted 5.16.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kcompactd0 state:D stack:29008 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: ffffffff8bb83ca0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by kswapd1/98:
1 lock held by systemd-journal/2957:
4 locks held by systemd-timesyn/3053:
1 lock held by in:imklog/6224:
#0: ffff8880111a4b58 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff8880111a4b58 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_fault+0x15ad/0x26d0 mm/filemap.c:3096
1 lock held by cron/6222:
#0: ffff8880111a4b58 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff8880111a4b58 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_fault+0xc7e/0x26d0 mm/filemap.c:3081
1 lock held by syz-executor.4/10775:
2 locks held by kworker/u4:7/10845:
#0: ffff8880b9c39a98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
#1: ffff8880b9c279c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x173/0x490 kernel/sched/psi.c:871
1 lock held by syz-executor.3/14235:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc2-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: 45 Comm: kworker/u4:2 Not tainted 5.16.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4708 [inline]
RIP: 0010:__lock_acquire+0x516/0x54a0 kernel/locking/lockdep.c:4977
Code: ff df 48 89 f9 48 c1 e9 03 0f b6 04 01 48 89 f9 83 e1 07 38 c8 7f 08 84 c0 0f 85 a8 10 00 00 0f b6 85 b9 00 00 00 48 8b 0c 24 <84> c0 41 0f 44 c7 48 c1 e9 03 88 44 24 50 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc9000115fa60 EFLAGS: 00000046
RAX: 0000000000000001 RBX: ffffffff8bb83ca0 RCX: ffff8880125be158
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8ff73cd9
RBP: ffffffff8ff73c20 R08: 0000000000000000 R09: ffffffff8ff71a07
R10: fffffbfff1fee340 R11: 0000000000000000 R12: ffff8880125be1b0
R13: ffff8880125bd700 R14: 0000000000020000 R15: 0000000000000002
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa3206f4b11 CR3: 000000000b88e000 CR4: 0000000000350ef0
Call Trace:
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
rcu_read_lock include/linux/rcupdate.h:688 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
batadv_nc_worker+0x12d/0xfa0 net/batman-adv/network-coding.c:723
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), 1 bytes skipped:
0: df 48 89 fisttps -0x77(%rax)
3: f9 stc
4: 48 c1 e9 03 shr $0x3,%rcx
8: 0f b6 04 01 movzbl (%rcx,%rax,1),%eax
c: 48 89 f9 mov %rdi,%rcx
f: 83 e1 07 and $0x7,%ecx
12: 38 c8 cmp %cl,%al
14: 7f 08 jg 0x1e
16: 84 c0 test %al,%al
18: 0f 85 a8 10 00 00 jne 0x10c6
1e: 0f b6 85 b9 00 00 00 movzbl 0xb9(%rbp),%eax
25: 48 8b 0c 24 mov (%rsp),%rcx
* 29: 84 c0 test %al,%al <-- trapping instruction
2b: 41 0f 44 c7 cmove %r15d,%eax
2f: 48 c1 e9 03 shr $0x3,%rcx
33: 88 44 24 50 mov %al,0x50(%rsp)
37: 48 rex.W
38: b8 00 00 00 00 mov $0x0,%eax
3d: 00 fc add %bh,%ah