INFO: task kcompactd0:30 blocked for more than 143 seconds.
Not tainted 5.15.0-rc4-next-20211011-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kcompactd0 state:D stack:28408 pid: 30 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4953 [inline]
__schedule+0x940/0x26f0 kernel/sched/core.c:6234
schedule+0xd2/0x260 kernel/sched/core.c:6307
io_schedule+0xba/0x130 kernel/sched/core.c:8351
folio_wait_bit_common+0x4f2/0xa60 mm/filemap.c:1364
lock_page include/linux/pagemap.h:747 [inline]
__unmap_and_move mm/migrate.c:980 [inline]
unmap_and_move mm/migrate.c:1204 [inline]
migrate_pages+0xa5a/0x3880 mm/migrate.c:1481
compact_zone+0x1abb/0x3860 mm/compaction.c:2393
kcompactd_do_work+0x2c9/0x730 mm/compaction.c:2833
kcompactd+0x86b/0xf30 mm/compaction.c:2935
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
INFO: task syz-executor.1:20581 can't die for more than 144 seconds.
task:syz-executor.1 state:R running task stack:25960 pid:20581 ppid: 20220 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:4953 [inline]
__schedule+0x940/0x26f0 kernel/sched/core.c:6234
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb814a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by kswapd0/91:
1 lock held by kswapd1/99:
1 lock held by systemd-journal/2965:
1 lock held by cron/6225:
2 locks held by in:imklog/6232:
#0: ffff8880214b00f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
#1: ffff8880b9c39a58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:478 [inline]
#1: ffff8880b9c39a58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1317 [inline]
#1: ffff8880b9c39a58 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1615 [inline]
#1: ffff8880b9c39a58 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x236/0x26f0 kernel/sched/core.c:6148
1 lock held by syz-executor.1/20581:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.0-rc4-next-20211011-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:254 [inline]
watchdog+0xcb7/0xed0 kernel/hung_task.c:339
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: 14 Comm: rcu_preempt Not tainted 5.15.0-rc4-next-20211011-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:lockdep_hardirqs_on+0x86/0x100 kernel/locking/lockdep.c:4354
Code: 10 48 8b 83 58 0a 00 00 48 39 83 40 0a 00 00 75 36 48 c7 c7 80 03 ac 89 e8 67 11 00 00 8b 83 00 0a 00 00 48 89 ab 08 0a 00 00 <65> c7 05 3b a9 b6 76 01 00 00 00 83 c0 01 89 83 00 0a 00 00 89 83
RSP: 0018:ffffc90000d37c28 EFLAGS: 00000002
RAX: 000000000012b356 RBX: ffff88813fe39d00 RCX: 1ffffffff1b1f119
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffffff894e8ac0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817cb878 R11: 0000000000000001 R12: ffffffff9062f308
R13: ffffffff89adece0 R14: ffffc90000d37cc0 R15: ffffffff9062f310
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000741420 CR3: 000000000b88e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
_raw_spin_unlock_irqrestore+0x50/0x70 kernel/locking/spinlock.c:194
debug_object_free lib/debugobjects.c:852 [inline]
debug_object_free+0x1c0/0x350 lib/debugobjects.c:825
destroy_timer_on_stack kernel/time/timer.c:759 [inline]
schedule_timeout+0x161/0x2a0 kernel/time/timer.c:1885
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1966
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2139
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 10 48 8b adc %cl,-0x75(%rax)
3: 83 58 0a 00 sbbl $0x0,0xa(%rax)
7: 00 48 39 add %cl,0x39(%rax)
a: 83 40 0a 00 addl $0x0,0xa(%rax)
e: 00 75 36 add %dh,0x36(%rbp)
11: 48 c7 c7 80 03 ac 89 mov $0xffffffff89ac0380,%rdi
18: e8 67 11 00 00 callq 0x1184
1d: 8b 83 00 0a 00 00 mov 0xa00(%rbx),%eax
23: 48 89 ab 08 0a 00 00 mov %rbp,0xa08(%rbx)
* 2a: 65 c7 05 3b a9 b6 76 movl $0x1,%gs:0x76b6a93b(%rip) # 0x76b6a970 <-- trapping instruction
31: 01 00 00 00
35: 83 c0 01 add $0x1,%eax
38: 89 83 00 0a 00 00 mov %eax,0xa00(%rbx)
3e: 89 .byte 0x89
3f: 83 .byte 0x83