INFO: task kcompactd1:30 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:kcompactd1 state:D stack:28168 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/26:
#0: ffffffff8bb80fe0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by kswapd0/98:
1 lock held by kswapd1/99:
1 lock held by systemd-journal/2961:
2 locks held by systemd-udevd/2972:
1 lock held by systemd-timesyn/3055:
2 locks held by in:imklog/6216:
1 lock held by cron/6210:
2 locks held by syz-fuzzer/6514:
2 locks held by syz-fuzzer/6517:
#0: ffff88806be01b50 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff88806be01b50 (mapping.invalidate_lock){++++}-{3:3}, at: page_cache_ra_unbounded+0x1b3/0x940 mm/readahead.c:194
#1: ffffffff8bca4168 (pcpu_drain_mutex){+.+.}-{3:3}, at: __drain_all_pages+0x4f/0x6c0 mm/page_alloc.c:3181
3 locks held by kworker/1:4/7665:
3 locks held by kworker/u4:12/21304:
1 lock held by syz-executor.3/6039:
5 locks held by kworker/0:2H/6106:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 26 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: 6106 Comm: kworker/0:2H Not tainted 5.16.0-rc3-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:compound_nr include/linux/mm.h:962 [inline]
RIP: 0010:isolate_lru_pages+0x2f6/0x17b0 mm/vmscan.c:2097
Code: 3c 28 00 0f 85 d3 10 00 00 4c 8b 63 f8 31 ff 49 c1 ec 10 41 83 e4 01 44 89 e6 e8 95 03 d4 ff 45 84 e4 48 c7 04 24 01 00 00 00 <74> 28 e8 a3 ff d3 ff 48 8d 7b 50 48 89 f8 48 c1 e8 03 42 0f b6 04
RSP: 0018:ffffc9000d9171a8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffffea0007c0cb88 RCX: ffff88815ea5e0c0
RDX: 0000000000000000 RSI: ffff88815ea5e0c0 RDI: 0000000000000003
RBP: ffffea0007c0cb80 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff81a2e48b R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888140b9f020 R15: 0000000000000006
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056482fc03373 CR3: 000000006c269000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
shrink_inactive_list mm/vmscan.c:2379 [inline]
shrink_list mm/vmscan.c:2621 [inline]
shrink_lruvec+0xb2e/0x2660 mm/vmscan.c:2940
shrink_node_memcgs mm/vmscan.c:3129 [inline]
shrink_node+0x858/0x1eb0 mm/vmscan.c:3252
shrink_zones mm/vmscan.c:3485 [inline]
do_try_to_free_pages+0x4e2/0x1640 mm/vmscan.c:3541
try_to_free_pages+0x29f/0x750 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.constprop.0+0xac7/0x20d0 mm/page_alloc.c:5007
__alloc_pages+0x412/0x500 mm/page_alloc.c:5382
alloc_pages+0x1a7/0x300 mm/mempolicy.c:2191
__get_free_pages+0x8/0x40 mm/page_alloc.c:5418
fill_page_cache_func+0xad/0x240 kernel/rcu/tree.c:3412
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):
0: 3c 28 cmp $0x28,%al
2: 00 0f add %cl,(%rdi)
4: 85 d3 test %edx,%ebx
6: 10 00 adc %al,(%rax)
8: 00 4c 8b 63 add %cl,0x63(%rbx,%rcx,4)
c: f8 clc
d: 31 ff xor %edi,%edi
f: 49 c1 ec 10 shr $0x10,%r12
13: 41 83 e4 01 and $0x1,%r12d
17: 44 89 e6 mov %r12d,%esi
1a: e8 95 03 d4 ff callq 0xffd403b4
1f: 45 84 e4 test %r12b,%r12b
22: 48 c7 04 24 01 00 00 movq $0x1,(%rsp)
29: 00
* 2a: 74 28 je 0x54 <-- trapping instruction
2c: e8 a3 ff d3 ff callq 0xffd3ffd4
31: 48 8d 7b 50 lea 0x50(%rbx),%rdi
35: 48 89 f8 mov %rdi,%rax
38: 48 c1 e8 03 shr $0x3,%rax
3c: 42 rex.X
3d: 0f .byte 0xf
3e: b6 04 mov $0x4,%dh