INFO: task kcompactd0:30 blocked for more than 143 seconds.
Not tainted 5.16.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kcompactd0 state:D stack:25080 pid: 30 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6253
schedule+0x12b/0x1f0 kernel/sched/core.c:6326
io_schedule+0x83/0x100 kernel/sched/core.c:8371
folio_wait_bit_common+0x8aa/0xe00 mm/filemap.c:1371
lock_page include/linux/pagemap.h:780 [inline]
__unmap_and_move+0x9d9/0xda0 mm/migrate.c:980
unmap_and_move+0x321/0xd70 mm/migrate.c:1204
migrate_pages+0x562/0x16f0 mm/migrate.c:1481
compact_zone+0x2d23/0x3d10 mm/compaction.c:2399
kcompactd_do_work mm/compaction.c:2839 [inline]
kcompactd+0x937/0x2920 mm/compaction.c:2941
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8cd1da80 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
5 locks held by kworker/1:1H/50:
1 lock held by kswapd1/98:
1 lock held by systemd-journal/2963:
1 lock held by systemd-udevd/2975:
1 lock held by in:imklog/6233:
1 lock held by cron/6221:
1 lock held by syz-fuzzer/6522:
1 lock held by syz-fuzzer/6528:
3 locks held by kworker/u4:7/22835:
1 lock held by syz-executor.2/27851:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc1-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+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x16a/0x280 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+0xc82/0xcd0 kernel/hung_task.c:295
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 50 Comm: kworker/1:1H Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_highpri fill_page_cache_func
RIP: 0010:page_evictable+0x24f/0x290 mm/internal.h:126
Code: 00 00 48 c7 c2 80 86 9a 8a e8 9d a4 b1 ff e8 e8 f7 ba ff 48 c7 c7 80 da d1 8c e8 cc 16 00 00 89 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 49 ff cd 4d 89 ec e9 cc fe ff ff 48 ff cd 49 89 ef 49 83 fc
RSP: 0018:ffffc900012aebf0 EFLAGS: 00000046
RAX: 0000000000000001 RBX: ffffea0005bd97d0 RCX: dffffc0000000000
RDX: 1ffff92000255d60 RSI: 0000000000000001 RDI: 0000000000000000
RBP: dead000000000100 R08: dffffc0000000000 R09: fffffbfff1c3d206
R10: fffffbfff1c3d206 R11: 0000000000000000 R12: ffffc900012aecc8
R13: 1ffffd4000b7b2fa R14: ffffea0005bd97c0 R15: ffffea0005bd97c8
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5dfb57d9e0 CR3: 000000000ca8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
move_pages_to_lru+0x384/0x15c0 mm/vmscan.c:2278
shrink_inactive_list+0x46f/0xad0 mm/vmscan.c:2397
shrink_list mm/vmscan.c:2621 [inline]
shrink_lruvec+0x49a/0xc90 mm/vmscan.c:2940
shrink_node_memcgs+0x358/0x700 mm/vmscan.c:3129
shrink_node+0xdc2/0x1ee0 mm/vmscan.c:3252
shrink_zones+0x482/0xb90 mm/vmscan.c:3485
do_try_to_free_pages+0x22a/0xce0 mm/vmscan.c:3541
try_to_free_pages+0x3e3/0xc60 mm/vmscan.c:3776
__perform_reclaim mm/page_alloc.c:4588 [inline]
__alloc_pages_direct_reclaim mm/page_alloc.c:4609 [inline]
__alloc_pages_slowpath+0x1197/0x2530 mm/page_alloc.c:5007
__alloc_pages+0x3d0/0x580 mm/page_alloc.c:5382
__get_free_pages+0x8/0x30 mm/page_alloc.c:5418
fill_page_cache_func+0xc4/0x220 kernel/rcu/tree.c:3412
process_one_work+0x853/0x1140 kernel/workqueue.c:2298
worker_thread+0xac1/0x1320 kernel/workqueue.c:2445
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 48 c7 c2 80 86 9a 8a mov $0xffffffff8a9a8680,%rdx
9: e8 9d a4 b1 ff callq 0xffb1a4ab
e: e8 e8 f7 ba ff callq 0xffbaf7fb
13: 48 c7 c7 80 da d1 8c mov $0xffffffff8cd1da80,%rdi
1a: e8 cc 16 00 00 callq 0x16eb
1f: 89 d8 mov %ebx,%eax
21: 5b pop %rbx
22: 41 5c pop %r12
24: 41 5d pop %r13
26: 41 5e pop %r14
28: 41 5f pop %r15
* 2a: 5d pop %rbp <-- trapping instruction
2b: c3 retq
2c: 49 ff cd dec %r13
2f: 4d 89 ec mov %r13,%r12
32: e9 cc fe ff ff jmpq 0xffffff03
37: 48 ff cd dec %rbp
3a: 49 89 ef mov %rbp,%r15
3d: 49 rex.WB
3e: 83 .byte 0x83
3f: fc cld