INFO: task kcompactd0:30 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:kcompactd0 state:D stack:25584 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:796 [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: ffffffff8cb1db40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
3 locks held by kworker/u4:2/44:
1 lock held by kswapd0/98:
2 locks held by kswapd1/99:
1 lock held by systemd-journal/2957:
#0: ffff88801d955550 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff88801d955550 (mapping.invalidate_lock){++++}-{3:3}, at: page_cache_ra_unbounded+0x1b8/0x9f0 mm/readahead.c:194
1 lock held by in:imklog/6213:
#0: ffff88807a59c160 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff88807a59c160 (mapping.invalidate_lock){++++}-{3:3}, at: page_cache_ra_unbounded+0x1b8/0x9f0 mm/readahead.c:194
2 locks held by agetty/6220:
#0: ffff88807e5a6098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc90002f832e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6c5/0x1c60 drivers/tty/n_tty.c:2113
3 locks held by kworker/0:8/8517:
2 locks held by agetty/21618:
#0: ffff88807a245098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc900050a32e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6c5/0x1c60 drivers/tty/n_tty.c:2113
2 locks held by kworker/u4:6/22739:
3 locks held by kworker/1:5/32575:
1 lock held by syz-executor.0/11667:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 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+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111
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: 32575 Comm: kworker/1:5 Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events fill_page_cache_func
RIP: 0010:check_preemption_disabled+0x3/0x1c0 lib/smp_processor_id.c:13
Code: cc cc cc cc cc cc cc 0f 1f 44 00 00 48 c7 c7 e0 48 d5 8a 48 c7 c6 20 49 d5 8a eb 0b 66 2e 0f 1f 84 00 00 00 00 00 90 55 41 57 <41> 56 41 55 41 54 53 48 83 ec 10 49 89 f6 49 89 ff 65 48 8b 04 25
RSP: 0000:ffffc9000b91e940 EFLAGS: 00000086
RAX: 00000000000bc401 RBX: 1ffff92001723d30 RCX: 0000000080000002
RDX: 0000000000000000 RSI: ffffffff8ad54920 RDI: ffffffff8ad548e0
RBP: ffffc9000b91ea08 R08: dffffc0000000000 R09: fffffbfff1bfd196
R10: fffffbfff1bfd196 R11: 0000000000000000 R12: 0000000000000002
R13: 1ffff92001723d54 R14: dffffc0000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f936597b560 CR3: 000000000c88e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lockdep_current_cpu_online+0x36/0x130 kernel/rcu/tree.c:1169
rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
rcu_read_lock_sched_held+0x74/0x130 kernel/rcu/update.c:123
trace_lock_acquire+0x59/0x190 include/trace/events/lock.h:13
lock_acquire+0xa5/0x4d0 kernel/locking/lockdep.c:5608
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:268
rcu_read_lock include/linux/rcupdate.h:688 [inline]
page_evictable+0x23/0x290 mm/internal.h:123
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: cc int3
1: cc int3
2: cc int3
3: cc int3
4: cc int3
5: cc int3
6: cc int3
7: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
c: 48 c7 c7 e0 48 d5 8a mov $0xffffffff8ad548e0,%rdi
13: 48 c7 c6 20 49 d5 8a mov $0xffffffff8ad54920,%rsi
1a: eb 0b jmp 0x27
1c: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
23: 00 00 00
26: 90 nop
27: 55 push %rbp
28: 41 57 push %r15
* 2a: 41 56 push %r14 <-- trapping instruction
2c: 41 55 push %r13
2e: 41 54 push %r12
30: 53 push %rbx
31: 48 83 ec 10 sub $0x10,%rsp
35: 49 89 f6 mov %rsi,%r14
38: 49 89 ff mov %rdi,%r15
3b: 65 gs
3c: 48 rex.W
3d: 8b .byte 0x8b
3e: 04 25 add $0x25,%al