INFO: task syz-executor.0:5336 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:21328 pid:5336 ppid:1 flags:0x00004006
Call Trace:
__schedule+0x13ca/0x43c0 kernel/sched/core.c:5244
schedule+0xc3/0x190 kernel/sched/core.c:6631
schedule_timeout+0x1ae/0x300 kernel/time/timer.c:2167
gfs2_gl_hash_clear+0x192/0x300 fs/gfs2/glock.c:2194
gfs2_put_super+0x827/0x890 fs/gfs2/super.c:627
generic_shutdown_super+0x134/0x310 fs/super.c:492
kill_block_super+0x7e/0xe0 fs/super.c:1386
deactivate_locked_super+0xa4/0x110 fs/super.c:332
cleanup_mnt+0x490/0x520 fs/namespace.c:1291
task_work_run+0x24a/0x300 kernel/task_work.c:179
exit_to_user_mode_loop+0xd1/0xf0 include/linux/resume_user_mode.h:49
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:203
syscall_exit_to_user_mode+0x54/0x2d0 kernel/entry/common.c:285
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f505767db87
RSP: 002b:00007fff86dc88b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f505767db87
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007fff86dc8970
RBP: 00007fff86dc8970 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff86dc9a30
R13: 00007f50576d7aa2 R14: 00000000000133be R15: 0000000000000001
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cd26dd0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xce0 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8cd275d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xce0 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8cd26c00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4732:
#0: ffff888027985098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1630 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.0/5336:
#0: ffff88807a2d20e0 (&type->s_umount_key#50){+.+.}-{3:3}, at: deactivate_super+0xad/0xf0 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 07/26/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b5/0x2a0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x47b/0x500 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1d3/0x430 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+0xf70/0xfb0 kernel/hung_task.c:377
kthread+0x270/0x300 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: 34 Comm: kworker/u4:2 Not tainted 6.2.0-rc1-syzkaller-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:__schedule+0x151/0x43c0 kernel/sched/core.c:5797
Code: f7 48 8b 1b 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 86 43 43 f7 48 81 3b 9d 6e ac 57 <0f> 85 cd 18 00 00 83 7c 24 58 00 75 5e 48 8b 44 24 20 48 8d 58 18
RSP: 0018:ffffc90000ab7960 EFLAGS: 00000246
RAX: 1ffff92000156000 RBX: ffffc90000ab0000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffffffff8b19dbe0 RDI: ffffffff8b19dba0
RBP: ffffc90000ab7b48 R08: ffffffff8159df8a R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff888017853a80
R13: 1ffff11002ef0bc3 R14: ffff8880b9b00000 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558401a15680 CR3: 000000000ca8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
schedule+0xc3/0x190 kernel/sched/core.c:6631
toggle_allocation_gate+0x15b/0x240 mm/kfence/core.c:801
process_one_work+0x96c/0x13e0 kernel/workqueue.c:2289
worker_thread+0xa63/0x1210 kernel/workqueue.c:2436
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308