INFO: task syz-executor:7674 blocked for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:22728 pid:7674  tgid:7674  ppid:1      task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x1821/0x5740
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7f7/0x1550
 lmLogClose+0xb4/0x520
 jfs_umount+0x2fb/0x3d0
 jfs_put_super+0x8c/0x190
 generic_shutdown_super+0x13d/0x2d0
 kill_block_super+0x44/0x90
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x437/0x4d0
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0x193/0x680
 do_syscall_64+0x353/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe03279e097
RSP: 002b:00007ffe64d02678 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fe0328321ca RCX: 00007fe03279e097
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe64d02730
RBP: 00007ffe64d02730 R08: 00007ffe64d03730 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe64d037c0
R13: 00007fe0328321ca R14: 000000000002798f R15: 00007ffe64d03800
 </TASK>
INFO: task syz-executor:8213 blocked for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:22416 pid:8213  tgid:8213  ppid:1      task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x1821/0x5740
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7f7/0x1550
 lmLogClose+0xb4/0x520
 jfs_umount+0x2fb/0x3d0
 jfs_put_super+0x8c/0x190
 generic_shutdown_super+0x13d/0x2d0
 kill_block_super+0x44/0x90
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x437/0x4d0
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0x193/0x680
 do_syscall_64+0x353/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7faa15d9e097
RSP: 002b:00007ffeadd48108 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007faa15e321ca RCX: 00007faa15d9e097
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffeadd481c0
RBP: 00007ffeadd481c0 R08: 00007ffeadd491c0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffeadd49250
R13: 00007faa15e321ca R14: 00000000000362de R15: 00007ffeadd49290
 </TASK>
INFO: task syz-executor:8538 blocked for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:22176 pid:8538  tgid:8538  ppid:1      task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x1821/0x5740
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7f7/0x1550
 lmLogClose+0xb4/0x520
 jfs_umount+0x2fb/0x3d0
 jfs_put_super+0x8c/0x190
 generic_shutdown_super+0x13d/0x2d0
 kill_block_super+0x44/0x90
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x437/0x4d0
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0x193/0x680
 do_syscall_64+0x353/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5f1679e097
RSP: 002b:00007ffe4113a388 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f5f168321ca RCX: 00007f5f1679e097
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe4113a440
RBP: 00007ffe4113a440 R08: 00007ffe4113b440 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe4113b4d0
R13: 00007f5f168321ca R14: 0000000000035cb2 R15: 00007ffe4113b510
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8e95cce0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
1 lock held by klogd/5055:
 #0: ffff88823c63b060 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x31/0x150
2 locks held by getty/5443:
 #0: ffff8881110640a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900034732e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13a0
2 locks held by syz-executor/7426:
 #0: ffff8881706c40d8 (&type->s_umount_key#55){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edfbf60 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/7526:
 #0: ffff88817089e0d8 (&type->s_umount_key#55){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edfbf60 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/7674:
 #0: ffff8881bceb20d8 (&type->s_umount_key#55){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edfbf60 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/8213:
 #0: ffff888106ea20d8 (&type->s_umount_key#55){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edfbf60 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/8538:
 #0: ffff88816a6da0d8 (&type->s_umount_key#55){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edfbf60 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
1 lock held by syz.4.509/8907:
 #0: ffff8881706c40d8 (&type->s_umount_key#55){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
2 locks held by syz-executor/9031:
 #0: ffff88810ec660d8 (&type->s_umount_key#55){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edfbf60 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
1 lock held by syz.7.715/9897:
 #0: ffff88817089e0d8 (&type->s_umount_key#55){++++}-{4:4}, at: super_lock+0x289/0x3d0
1 lock held by syz.8.783/10070:
 #0: ffff8881706c40d8 (&type->s_umount_key#55){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.6.822/10307:
 #0: ffff8881706c40d8 (&type->s_umount_key#55){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
2 locks held by syz-executor/10320:
 #0: ffff888120aa20d8 (&type->s_umount_key#55){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edfbf60 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
1 lock held by syz.5.1041/11253:
 #0: ffff88816a6da0d8 (&type->s_umount_key#55){++++}-{4:4}, at: super_lock+0x2d6/0x3d0

=============================================

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 35 Comm: khungtaskd Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 nmi_cpu_backtrace+0x274/0x2d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 sys_info+0x135/0x170
 watchdog+0xfd3/0x1030
 kthread+0x389/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:pv_native_safe_halt+0xf/0x20
Code: 5b 7e 02 e9 53 fa 02 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d b3 61 21 00 fb f4 <c3> cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90
RSP: 0018:ffffc90000197e20 EFLAGS: 00000206
RAX: 000000000042ddbb RBX: ffffffff819a858a RCX: 0000000080000001
RDX: 0000000000000001 RSI: ffffffff8dfa6e33 RDI: ffffffff8c28cb60
RBP: ffffc90000197f10 R08: ffff88823c6339db R09: 1ffff110478c673b
R10: dffffc0000000000 R11: ffffed10478c673c R12: 0000000000000001
R13: 1ffff1102c09e000 R14: 0000000000000001 R15: 1ffff1102c09e000
FS:  0000000000000000(0000) GS:ffff8882a9299000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f25fefea2f8 CR3: 0000000108ffe000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 default_idle+0x9/0x20
 default_idle_call+0x72/0xb0
 do_idle+0x36a/0x5f0
 cpu_startup_entry+0x43/0x60
 start_secondary+0x101/0x110
 common_startup_64+0x13e/0x147
 </TASK>
