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:1356
lock_page include/linux/pagemap.h:697 [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:2393
proactive_compact_node+0x103/0x1c0 mm/compaction.c:2647
kcompactd+0x5b4/0xf30 mm/compaction.c:2957
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: ffffffff8b983960 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446
1 lock held by khugepaged/33:
#0: ffffffff8ba68308 (lock#5){+.+.}-{3:3}, at: __lru_add_drain_all+0x65/0x760 mm/swap.c:788
1 lock held by kswapd0/98:
1 lock held by kswapd1/99:
1 lock held by systemd-journal/2929:
2 locks held by systemd-udevd/2936:
1 lock held by cron/6164:
1 lock held by in:imklog/6168:
2 locks held by syz-fuzzer/5554:
3 locks held by kworker/0:9/8473:
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2269
#1: ffffc90018be7db0 ((work_completion)(&(&krcp->page_cache_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2273
#2: ffffffff8baa7cc8 (pcpu_drain_mutex){+.+.}-{3:3}, at: __drain_all_pages+0x4f/0x6c0 mm/page_alloc.c:3189
3 locks held by kworker/1:17/9383:
2 locks held by agetty/17279:
#0: ffff88808581a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc900029b82e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
1 lock held by syz-executor.2/7293:
2 locks held by kworker/u4:1/7371:
#0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline]
#0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline]
#0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2269
#1: ffffc90005707db0 ((kfence_timer).work){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2273
=============================================
NMI backtrace for cpu 0
CPU: 0 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7371 Comm: kworker/u4:1 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:memory_is_nonzero mm/kasan/generic.c:101 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x63/0x180 mm/kasan/generic.c:189
Code: 00 00 00 00 00 fc ff df 4d 89 ca 48 c1 ed 03 49 c1 ea 03 48 01 c5 49 01 c2 48 89 e8 49 8d 5a 01 48 89 da 48 29 ea 48 83 fa 10 <7e> 63 41 89 eb 41 83 e3 07 75 74 4c 8d 5a 07 48 85 d2 4c 0f 49 da
RSP: 0018:ffffc90005707b08 EFLAGS: 00000083
RAX: fffffbfff1adee02 RBX: fffffbfff1adee03 RCX: ffffffff8163df6f
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff8d6f7010
RBP: fffffbfff1adee02 R08: 0000000000000000 R09: ffffffff8d6f7017
R10: fffffbfff1adee02 R11: 0000000000000001 R12: 0000000000000001
R13: ffffffff8d6fa42c R14: ffff888014d80e00 R15: ffff888069c89d00
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0d3d5e6ef8 CR3: 000000000b68e000 CR4: 0000000000350ee0
Call Trace:
instrument_atomic_read include/linux/instrumented.h:71 [inline]
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
cpumask_test_cpu include/linux/cpumask.h:344 [inline]
cpu_online include/linux/cpumask.h:895 [inline]
trace_rcu_utilization+0x2f/0x1b0 include/trace/events/rcu.h:27
rcu_note_context_switch+0x6f/0x17f0 kernel/rcu/tree_plugin.h:314
__schedule+0x238/0x4940 kernel/sched/core.c:6147
preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6416
__cond_resched+0x13/0x20 kernel/sched/core.c:8129
_cond_resched include/linux/sched.h:2017 [inline]
process_one_work+0xaf4/0x1690 kernel/workqueue.c:2324
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):
0: 00 00 add %al,(%rax)
2: 00 00 add %al,(%rax)
4: 00 fc add %bh,%ah
6: ff (bad)
7: df 4d 89 fisttps -0x77(%rbp)
a: ca 48 c1 lret $0xc148
d: ed in (%dx),%eax
e: 03 49 c1 add -0x3f(%rcx),%ecx
11: ea (bad)
12: 03 48 01 add 0x1(%rax),%ecx
15: c5 49 01 (bad)
18: c2 48 89 retq $0x8948
1b: e8 49 8d 5a 01 callq 0x15a8d69
20: 48 89 da mov %rbx,%rdx
23: 48 29 ea sub %rbp,%rdx
26: 48 83 fa 10 cmp $0x10,%rdx
* 2a: 7e 63 jle 0x8f <-- trapping instruction
2c: 41 89 eb mov %ebp,%r11d
2f: 41 83 e3 07 and $0x7,%r11d
33: 75 74 jne 0xa9
35: 4c 8d 5a 07 lea 0x7(%rdx),%r11
39: 48 85 d2 test %rdx,%rdx
3c: 4c 0f 49 da cmovns %rdx,%r11