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:28408 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/27:
#0: ffffffff8bb83ca0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
3 locks held by kworker/0:1H/51:
#0: ffff888010c65138 ((wq_completion)events_highpri){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c65138 ((wq_completion)events_highpri){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c65138 ((wq_completion)events_highpri){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff888010c65138 ((wq_completion)events_highpri){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline]
#0: ffff888010c65138 ((wq_completion)events_highpri){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline]
#0: ffff888010c65138 ((wq_completion)events_highpri){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2269
#1: ffffc900012bfdb0 ((work_completion)(&(&krcp->page_cache_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2273
#2: ffffffff8bca8fa8 (pcpu_drain_mutex){+.+.}-{3:3}, at: __drain_all_pages+0x4f/0x6c0 mm/page_alloc.c:3181
1 lock held by kswapd0/97:
1 lock held by kswapd1/98:
2 locks held by systemd-journal/2967:
1 lock held by in:imklog/6190:
1 lock held by cron/6192:
2 locks held by agetty/6237:
#0: ffff888019fcb098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc900028382e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
1 lock held by syz-fuzzer/6484:
2 locks held by syz-fuzzer/6486:
3 locks held by kworker/u4:5/8185:
#0: ffff8880b9d39a98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
#1: ffff8880b9d279c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x173/0x490 kernel/sched/psi.c:871
#2: ffff8880b9d28298 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x5a/0x1f0 kernel/time/timer.c:946
3 locks held by kworker/1:8/18094:
1 lock held by syz-executor.0/24673:
#0: ffff888145e0dbc8 (mapping.invalidate_lock#2){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff888145e0dbc8 (mapping.invalidate_lock#2){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x1b3/0x940 mm/readahead.c:194
=============================================
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+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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 6192 Comm: cron Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:lock_is_held_type+0xeb/0x140 kernel/locking/lockdep.c:5682
Code: 45 31 ed 44 39 f0 41 0f 94 c5 48 c7 c7 e0 0f ac 89 e8 a9 0d 00 00 b8 ff ff ff ff 65 0f c1 05 0c 69 be 76 83 f8 01 75 29 9c 58 c4 02 75 3d 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 44 89
RSP: 0018:ffffc9000ae56770 EFLAGS: 00000046
RAX: 0000000000000046 RBX: 0000000000000001 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffffff8bb83be0 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffff81a31a5c R11: 0000000000000000 R12: ffff888021f4d700
R13: 0000000000000000 R14: 00000000ffffffff R15: ffff888021f4e160
FS: 00007ff01186e840(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8f39bff303 CR3: 000000007f637000 CR4: 0000000000350ee0
Call Trace:
lock_is_held include/linux/lockdep.h:283 [inline]
__might_resched+0x3a/0x2c0 kernel/sched/core.c:9500
shrink_page_list+0x269/0x6730 mm/vmscan.c:1495
shrink_inactive_list mm/vmscan.c:2394 [inline]
shrink_list mm/vmscan.c:2621 [inline]
shrink_lruvec+0xc9b/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
folio_alloc+0x1c/0x70 mm/mempolicy.c:2201
filemap_alloc_folio mm/filemap.c:1036 [inline]
__filemap_get_folio+0x5f2/0xd60 mm/filemap.c:1951
pagecache_get_page+0x2c/0x1a0 mm/folio-compat.c:125
find_or_create_page include/linux/pagemap.h:489 [inline]
grow_dev_page fs/buffer.c:949 [inline]
grow_buffers fs/buffer.c:1014 [inline]
__getblk_slow+0x1ed/0xae0 fs/buffer.c:1041
__getblk_gfp+0x6e/0x80 fs/buffer.c:1334
sb_getblk include/linux/buffer_head.h:327 [inline]
ext4_getblk+0x1d7/0x6b0 fs/ext4/inode.c:854
ext4_bread_batch+0x7c/0x550 fs/ext4/inode.c:921
__ext4_find_entry+0x482/0x1050 fs/ext4/namei.c:1600
ext4_lookup_entry fs/ext4/namei.c:1701 [inline]
ext4_lookup fs/ext4/namei.c:1769 [inline]
ext4_lookup+0x4fc/0x730 fs/ext4/namei.c:1760
__lookup_slow+0x24c/0x480 fs/namei.c:1657
lookup_slow fs/namei.c:1674 [inline]
walk_component+0x40f/0x6a0 fs/namei.c:1970
lookup_last fs/namei.c:2425 [inline]
path_lookupat+0x1bb/0x860 fs/namei.c:2449
filename_lookup+0x1c6/0x590 fs/namei.c:2478
user_path_at_empty+0x42/0x60 fs/namei.c:2801
user_path_at include/linux/namei.h:57 [inline]
vfs_statx+0x142/0x390 fs/stat.c:221
vfs_fstatat fs/stat.c:243 [inline]
vfs_stat include/linux/fs.h:3353 [inline]
__do_sys_newstat+0x91/0x110 fs/stat.c:385
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7ff010f5b295
Code: Unable to access opcode bytes at RIP 0x7ff010f5b26b.
RSP: 002b:00007fff2441f7c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 00007ff010fe3011 RCX: 00007ff010f5b295
RDX: 00007fff2441f850 RSI: 00007fff2441f850 RDI: 00007ff010fe3011
RBP: 0000000000000001 R08: 0000559fd64256d0 R09: 0000000000000020
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
----------------
Code disassembly (best guess):
0: 45 31 ed xor %r13d,%r13d
3: 44 39 f0 cmp %r14d,%eax
6: 41 0f 94 c5 sete %r13b
a: 48 c7 c7 e0 0f ac 89 mov $0xffffffff89ac0fe0,%rdi
11: e8 a9 0d 00 00 callq 0xdbf
16: b8 ff ff ff ff mov $0xffffffff,%eax
1b: 65 0f c1 05 0c 69 be xadd %eax,%gs:0x76be690c(%rip) # 0x76be692f
22: 76
23: 83 f8 01 cmp $0x1,%eax
26: 75 29 jne 0x51
28: 9c pushfq
29: 58 pop %rax
* 2a: f6 c4 02 test $0x2,%ah <-- trapping instruction
2d: 75 3d jne 0x6c
2f: 48 f7 04 24 00 02 00 testq $0x200,(%rsp)
36: 00
37: 74 01 je 0x3a
39: fb sti
3a: 48 83 c4 08 add $0x8,%rsp
3e: 44 rex.R
3f: 89 .byte 0x89