INFO: task syz.1.2213:19941 blocked in I/O wait for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.2213      state:D stack:24696 pid:19941 tgid:19940 ppid:19712  task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x1821/0x5740
 schedule+0x164/0x360
 io_schedule+0x7f/0xd0
 txBegin+0x27d/0xc00
 jfs_create+0x216/0xb10
 path_openat+0x1395/0x3860
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x113/0x200
 __x64_sys_open+0x11e/0x150
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3e38d9cdd9
RSP: 002b:00007f3e39ccf028 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f3e39015fa0 RCX: 00007f3e38d9cdd9
RDX: 0000000000000021 RSI: 0000000000066842 RDI: 00002000000000c0
RBP: 00007f3e38e32d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3e39016038 R14: 00007f3e39015fa0 R15: 00007ffd4ce58d68
 </TASK>
INFO: task syz.1.2213:19950 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.2213      state:D stack:26312 pid:19950 tgid:19940 ppid:19712  task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x1821/0x5740
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_write_slowpath+0x883/0x1080
 down_write_nested+0x1c6/0x210
 filename_create+0x200/0x370
 filename_mkdirat+0xd2/0x510
 __se_sys_mkdirat+0x35/0x150
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3e38d9bc47
RSP: 002b:00007f3e39cade58 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f3e39cadee0 RCX: 00007f3e38d9bc47
RDX: 00000000000001ff RSI: 0000200000000100 RDI: 00000000ffffff9c
RBP: 0000200000000040 R08: 0000200000006380 R09: 0000000000000000
R10: 0000200000000040 R11: 0000000000000246 R12: 0000200000000100
R13: 00007f3e39cadea0 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e95cd60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5438:
 #0: ffff888175efd0a0 (&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/19131:
4 locks held by syz-executor/19936:
2 locks held by syz.1.2213/19941:
 #0: ffff88810a890410 (sb_writers#29){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff88811840e6f8 (&type->i_mutex_dir_key#20){++++}-{4:4}, at: path_openat+0xb4c/0x3860
2 locks held by syz.1.2213/19950:
 #0: ffff88810a890410 (sb_writers#29){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff88811840e6f8 (&type->i_mutex_dir_key#20/1){+.+.}-{4:4}, at: filename_create+0x200/0x370
1 lock held by syz-executor/20268:
 #0: ffffffff8e963068 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2d0/0x770
8 locks held by syz.3.2651/22850:
2 locks held by syz.3.2651/22857:
 #0: ffff88810936e410 (sb_writers#16){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff88811842da50 (&type->i_mutex_dir_key#11/1){+.+.}-{4:4}, at: filename_create+0x200/0x370

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
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+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 20268 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:zap_class+0xf1/0x340
Code: 08 c1 75 d7 45 8b 75 00 41 f6 c6 fc 0f 84 e1 00 00 00 41 c1 ee 08 4a 8d 1c 75 70 03 42 93 49 81 fe 00 00 50 00 73 2f 0f b7 03 <25> ff 1f 00 00 49 39 c7 74 33 49 ff c6 41 8b 45 00 89 c1 c1 e9 08
RSP: 0018:ffffc90005907958 EFLAGS: 00000087
RAX: 0000000000002738 RBX: ffffffff935ab718 RCX: 00000000000ab800
RDX: ffffffff93fd0398 RSI: 0000000000000008 RDI: 000000000005a470
RBP: ffffffff94410810 R08: ffffffff81af2b38 R09: ffffffff8e95cd60
R10: dffffc0000000000 R11: fffffbfff20616bf R12: 0000000000001225
R13: ffffffff94840410 R14: 00000000000c59d4 R15: 0000000000000d85
FS:  000055558232d500(0000) GS:ffff88818dc8d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555582348a28 CR3: 00000001aeb24000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 lockdep_unregister_key+0x1c3/0x350
 jbd2_journal_destroy+0x71b/0x7e0
 ocfs2_journal_shutdown+0x50d/0xb30
 ocfs2_dismount_volume+0x3e2/0x8d0
 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+0xf3/0x4d0
 do_syscall_64+0x33e/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4970d9e017
Code: a2 c7 05 dc 06 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffdfffc3ee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f4970e32120 RCX: 00007f4970d9e017
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdfffc3fa0
RBP: 00007ffdfffc3fa0 R08: 00007ffdfffc4fa0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdfffc5030
R13: 00007f4970e32120 R14: 00000000000c6f65 R15: 00007ffdfffc5070
 </TASK>
