INFO: task syz-executor.5:5061 blocked for more than 143 seconds.
Not tainted 6.5.0-rc1-syzkaller-00006-g3f01e9fed845 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:20136 pid:5061 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_timeout+0x1bd/0x310 kernel/time/timer.c:2167
gfs2_gl_hash_clear+0x1a3/0x310 fs/gfs2/glock.c:2198
gfs2_put_super+0x833/0x8a0 fs/gfs2/super.c:657
generic_shutdown_super+0x134/0x340 fs/super.c:499
kill_block_super+0x68/0xa0 fs/super.c:1417
deactivate_locked_super+0xa4/0x110 fs/super.c:330
cleanup_mnt+0x426/0x4c0 fs/namespace.c:1254
task_work_run+0x24a/0x300 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f41db47de57
RSP: 002b:00007ffc9f240be8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f41db47de57
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffc9f240ca0
RBP: 00007ffc9f240ca0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc9f241d60
R13: 00007f41db4c73b9 R14: 00000000000527e1 R15: 0000000000000005
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8d328af0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8d328eb0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
#0: ffffffff8d328920 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
5 locks held by kworker/u4:3/47:
2 locks held by getty/4774:
#0: ffff88814a907098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015c02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1dc0 drivers/tty/n_tty.c:2187
1 lock held by syz-executor.5/5061:
#0: ffff88807dfcc0e0 (&type->s_umount_key#111){+.+.}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:360
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.5.0-rc1-syzkaller-00006-g3f01e9fed845 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x187/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x2b8/0x350 kernel/kthread.c:389
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: 5041 Comm: syz-fuzzer Not tainted 6.5.0-rc1-syzkaller-00006-g3f01e9fed845 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:207 [inline]
RIP: 0010:trace_sched_switch include/trace/events/sched.h:222 [inline]
RIP: 0010:__schedule+0xaca/0x48f0 kernel/sched/core.c:6707
Code: 24 28 48 8d 58 68 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 0f 85 f6 10 00 00 8b 03 e9 3b 1a 00 00 <0f> 1f 44 00 00 65 8b 05 e6 b7 3e 75 83 f8 08 0f 83 6e 0f 00 00 89
RSP: 0018:ffffc90003fdf7e0 EFLAGS: 00000082
RAX: 1ffffffff1a3e0f8 RBX: ffff88802d48bbe8 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8d1f08b0
RBP: ffffc90003fdfa08 R08: ffffffff8d1f08b7 R09: 1ffffffff1a3e116
R10: dffffc0000000000 R11: fffffbfff1a3e117 R12: 0000000000000000
R13: 1ffff11005a917c2 R14: dffffc0000000000 R15: ffffc90003fdf920
FS: 000000c0083c9c90(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000559c80b5f600 CR3: 0000000078eed000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_hrtimeout_range_clock+0x2b7/0x4a0 kernel/time/hrtimer.c:2317
ep_poll+0x19a9/0x1c70 fs/eventpoll.c:1929
do_epoll_wait fs/eventpoll.c:2326 [inline]
do_epoll_pwait+0x1da/0x320 fs/eventpoll.c:2360
__do_sys_epoll_pwait fs/eventpoll.c:2373 [inline]
__se_sys_epoll_pwait fs/eventpoll.c:2367 [inline]
__x64_sys_epoll_pwait+0x2b8/0x310 fs/eventpoll.c:2367
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x403ace
Code: 48 89 6c 24 38 48 8d 6c 24 38 e8 0d 00 00 00 48 8b 6c 24 38 48 83 c4 40 c3 cc cc cc 49 89 f2 48 89 fa 48 89 ce 48 89 df 0f 05 <48> 3d 01 f0 ff ff 76 15 48 f7 d8 48 89 c1 48 c7 c0 ff ff ff ff 48
RSP: 002b:000000c0011a3778 EFLAGS: 00000246 ORIG_RAX: 0000000000000119
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000403ace
RDX: 0000000000000080 RSI: 000000c0011a3840 RDI: 0000000000000004
RBP: 000000c0011a37c0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000003d3 R11: 0000000000000246 R12: 000000c0011a3850
R13: 0000000000000000 R14: 000000c000353ba0 R15: 00000073d531a0a7