INFO: task syz-executor890:3546 blocked for more than 143 seconds.
Not tainted 5.15.111-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor890 state:D
stack:24832 pid: 3546 ppid: 3544 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
wb_wait_for_completion+0x164/0x290 fs/fs-writeback.c:191
sync_inodes_sb+0x293/0xab0 fs/fs-writeback.c:2748
sync_filesystem+0x16b/0x220 fs/sync.c:64
generic_shutdown_super+0x6e/0x2c0 fs/super.c:448
kill_block_super+0x7a/0xe0 fs/super.c:1405
deactivate_locked_super+0xa0/0x110 fs/super.c:335
cleanup_mnt+0x44e/0x500 fs/namespace.c:1143
task_work_run+0x129/0x1a0 kernel/task_work.c:164
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:175
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
__syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301
do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fd6af177de7
RSP: 002b:00007ffde38c0208 EFLAGS: 00000202
ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fd6af177de7
RDX: 00007ffde38c02c9 RSI: 000000000000000a RDI: 00007ffde38c02c0
RBP: 00007ffde38c02c0 R08: 00000000ffffffff R09: 00007ffde38c00a0
R10: 0000555555e75653 R11: 0000000000000202 R12: 00007ffde38c1330
R13: 0000555555e755f0 R14: 00007ffde38c0230 R15: 0000000000000001
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0:
ffffffff8c91c5a0
(
rcu_read_lock
){....}-{1:2}
, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3266:
#0:
ffff88802325b098
(&tty->ldisc_sem
){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc900025132e8
(
&ldata->atomic_read_lock
){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1da0 drivers/tty/n_tty.c:2147
2 locks held by syz-executor890/3546:
#0:
ffff888079e840e0
(
&type->s_umount_key
#43
){+.+.}-{3:3}
, at: deactivate_super+0xa9/0xe0 fs/super.c:365
#1:
ffff88801afc67d8
(
&bdi->wb_switch_rwsem
){+.+.}-{3:3}
, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
, at: sync_inodes_sb+0x274/0xab0 fs/fs-writeback.c:2746
4 locks held by kworker/u4:1/3557:
#0:
ffff888142995138
(
(wq_completion)writeback
){+.+.}-{0:0}
, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2280
#1: ffffc90002d8fd20
(
(work_completion)(&(&wb->dwork)->work)
){+.+.}-{0:0}
, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2282
#2:
ffff888079e84650
(
sb_internal
#2
){.+.+}-{0:0}, at: xfs_bmapi_convert_delalloc+0x20f/0x1180 fs/xfs/libxfs/xfs_bmap.c:4573
#3:
ffff8880729a0868
(&xfs_nondir_ilock_class
){++++}-{3:3}
, at: xfs_bmapi_convert_delalloc+0x23c/0x1180 fs/xfs/libxfs/xfs_bmap.c:4578
3 locks held by kworker/1:1/3565:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.15.111-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:295
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3565 Comm: kworker/1:1 Not tainted 5.15.111-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Workqueue: xfs-buf/loop0 xfs_buf_ioend_work
RIP: 0010:perf_event_task_tick+0x119/0xa20 kernel/events/core.c:4324
Code: 8e 7a 08 65 8b 05 17 65 63 7e 89 44 24 0c 65 c7 05 08 65 63 7e 00 00 00 00 e8 83 8d 7a 08 4c 89 e0 48 c1 e8 03 42 80 3c 38 00 <74> 08 4c 89 e7 e8 1d 60 29 00 4d 8b 34 24 4d 39 e6 0f 84 90 08 00
RSP: 0018:ffffc90000dd0c20 EFLAGS: 00000046
RAX: 1ffff11017366875 RBX: 0000000000000000 RCX: ffff888022da8000
RDX: 0000000000010001 RSI: ffffffff8ad85ba0 RDI: ffffffff8ad85b60
RBP: 0000000000000001 R08: ffffffff819fde75 R09: ffffed10173672d1
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b9b343a8
R13: dffffc0000000000 R14: 1ffff1101736747b R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557fefce1600 CR3: 00000000232f8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
scheduler_tick+0x24c/0x500 kernel/sched/core.c:5307
update_process_times+0x1ca/0x200 kernel/time/timer.c:1793
tick_sched_handle kernel/time/tick-sched.c:226 [inline]
tick_sched_timer+0x22d/0x3c0 kernel/time/tick-sched.c:1430
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:console_trylock_spinning+0x36b/0x3f0 kernel/printk/printk.c:1909
Code: 0f 84 75 ff ff ff e8 b4 eb 19 00 fb 31 db eb 41 e8 aa eb 19 00 e8 55 60 b4 08 4d 85 ed 74 cd e8 9b eb 19 00 fb bb 01 00 00 00 <48> c7 c7 60 8e 7f 8c 31 f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00
RSP: 0018:ffffc90002daf740 EFLAGS: 00000293
RAX: ffffffff8165f845 RBX: 0000000000000001 RCX: ffff888022da8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002daf810 R08: ffffffff8165f7fe R09: fffffbfff1f78e3b
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920005b5ee8
R13: 0000000000000200 R14: 0000000000000046 R15: dffffc0000000000
vprintk_emit+0xa1/0x150 kernel/printk/printk.c:2267
_printk+0xd1/0x111 kernel/printk/printk.c:2289
print_hex_dump+0x1a2/0x250 lib/hexdump.c:285
xfs_hex_dump+0x39/0x50 fs/xfs/xfs_message.c:118
xfs_buf_verifier_error+0x1bc/0x290 fs/xfs/xfs_error.c:413
xfs_agf_read_verify+0x1d6/0x2a0 fs/xfs/libxfs/xfs_alloc.c:2959
xfs_buf_ioend+0x26a/0x6e0 fs/xfs/xfs_buf.c:1263
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2307
worker_thread+0xaca/0x1280 kernel/workqueue.c:2454
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.589 msecs