INFO: task syz-executor.0:5527 blocked for more than 143 seconds.
Not tainted 6.2.0-rc1-syzkaller-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:24336 pid:5527 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xbdd/0x54f0 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
schedule_timeout+0x14e/0x2a0 kernel/time/timer.c:2167
gfs2_gl_hash_clear+0x247/0x270 fs/gfs2/glock.c:2194
gfs2_put_super+0x497/0x670 fs/gfs2/super.c:627
generic_shutdown_super+0x158/0x410 fs/super.c:492
kill_block_super+0x9b/0xf0 fs/super.c:1386
gfs2_kill_sb+0x108/0x170 fs/gfs2/ops_fstype.c:1738
deactivate_locked_super+0x98/0x160 fs/super.c:332
deactivate_super+0xb1/0xd0 fs/super.c:363
cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1291
task_work_run+0x16f/0x270 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:203
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:296
do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8793c8d567
RSP: 002b:00007ffddc4f5f48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f8793c8d567
RDX: 00007ffddc4f6019 RSI: 000000000000000a RDI: 00007ffddc4f6010
RBP: 00007ffddc4f6010 R08: 00000000ffffffff R09: 00007ffddc4f5de0
R10: 0000555556b368b3 R11: 0000000000000246 R12: 00007f8793ce6b24
R13: 00007ffddc4f70d0 R14: 0000555556b36810 R15: 00007ffddc4f7110
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8c78f470 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8c78f170 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8c78ffc0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494
2 locks held by kworker/u4:4/74:
2 locks held by getty/4743:
#0: ffff888027926098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.0/5527:
#0: ffff8880783ae0e0 (&type->s_umount_key#50){+.+.}-{3:3}, at: deactivate_super+0xa9/0xd0 fs/super.c:362
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc1-syzkaller-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x333/0x3c0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xc75/0xfc0 kernel/hung_task.c:377
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 74 Comm: kworker/u4:4 Not tainted 6.2.0-rc1-syzkaller-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Workqueue: 0x0 (phy5)
RIP: 0010:mark_usage kernel/locking/lockdep.c:4525 [inline]
RIP: 0010:__lock_acquire+0x1180/0x56d0 kernel/locking/lockdep.c:5009
Code: 38 d0 7c 08 84 d2 0f 85 22 43 00 00 8b 0d c8 3a 62 10 85 c9 0f 84 e2 01 00 00 31 ed e9 90 f2 ff ff 65 8b 05 ea 46 9f 7e 85 c0 <0f> 85 0f 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5c 24 40 48
RSP: 0018:ffffc900015879b8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff816334c0
RDX: 0000000000000002 RSI: 0000000000000008 RDI: ffff88801870a7c1
RBP: ffff88801870a7c2 R08: 0000000000000000 R09: ffffffff91387ac7
R10: fffffbfff2270f58 R11: 0000000000000000 R12: ffff88801870a7a0
R13: ffff888018709d40 R14: ffff88801870a778 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e16f97c600 CR3: 000000000c48e000 CR4: 0000000000350ee0
Call Trace:
lock_acquire kernel/locking/lockdep.c:5668 [inline]
lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3d/0x60 kernel/locking/spinlock.c:162
debug_object_deactivate lib/debugobjects.c:739 [inline]
debug_object_deactivate+0x105/0x300 lib/debugobjects.c:727
debug_work_deactivate kernel/workqueue.c:515 [inline]
process_one_work+0x391/0x1710 kernel/workqueue.c:2219
worker_thread+0x669/0x1090 kernel/workqueue.c:2436
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308