INFO: task syz.9.3923:26530 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.9.3923      state:D stack:23736 pid:26530 tgid:26529 ppid:25384  task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x14ef/0x4fb0
 schedule+0x164/0x360
 io_schedule+0x7f/0xd0
 lock_metapage+0x1ff/0x400
 __get_metapage+0x49a/0xde0
 xtSplitPage+0x281/0x2150
 xtSplitUp+0x33c/0x1fc0
 xtInsert+0x452/0xf20
 extAlloc+0xad9/0x1020
 jfs_get_block+0x358/0xad0
 __blockdev_direct_IO+0x15d7/0x32f0
 jfs_direct_IO+0x119/0x220
 generic_file_direct_write+0x1db/0x3e0
 __generic_file_write_iter+0x11d/0x230
 generic_file_write_iter+0x14a/0x680
 iter_file_splice_write+0x99b/0x1100
 direct_splice_actor+0x101/0x160
 splice_direct_to_actor+0x53a/0xc70
 do_splice_direct+0x195/0x290
 do_sendfile+0x535/0x7c0
 __se_sys_sendfile64+0x144/0x1a0
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f03dd59acb9
RSP: 002b:00007f03db7f6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f03dd815fa0 RCX: 00007f03dd59acb9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007f03dd608bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f03dd816038 R14: 00007f03dd815fa0 R15: 00007ffd45986bd8
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8e35a360 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5637:
 #0: ffff8881732d70a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000356e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0
1 lock held by udevd/5928:
4 locks held by kworker/u10:6/17174:
 #0: ffff888103ea8948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x9d4/0x17a0
 #1: ffffc900048c7bc0 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa0f/0x17a0
 #2: ffff88817444e0e0 (&type->s_umount_key#64){++++}-{4:4}, at: super_trylock_shared+0x20/0xf0
 #3: ffff8881abd29d40 (&jfs_ip->commit_mutex){+.+.}-{4:4}, at: jfs_commit_inode+0x1ca/0x530
4 locks held by syz.9.3923/26530:
 #0: ffff88817444e420 (sb_writers#19){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160
 #1: ffff8881abd2a0f0 (&sb->s_type->i_mutex_key#31){+.+.}-{4:4}, at: generic_file_write_iter+0x11e/0x680
 #2: ffff8881abd29cb0 (&jfs_ip->rdwrlock#2){++++}-{4:4}, at: jfs_get_block+0x153/0xad0
 #3: ffff8881abd29d40 (&jfs_ip->commit_mutex){+.+.}-{4:4}, at: extAlloc+0x130/0x1020
2 locks held by syz.6.4073/27451:
 #0: ffff88817444e0e0 (&type->s_umount_key#64){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
 #1: ffff88816be4e820 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: sync_inodes_sb+0x1c2/0xbd0
2 locks held by syz.6.4073/27459:
 #0: ffff88817444e0e0 (&type->s_umount_key#64){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
 #1: ffff88816be4e820 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: sync_inodes_sb+0x1c2/0xbd0
2 locks held by syz.6.4073/27485:
 #0: ffff88817444e0e0 (&type->s_umount_key#64){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
 #1: ffff88816be4e820 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: sync_inodes_sb+0x1c2/0xbd0
2 locks held by syz.0.4718/31128:

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 35 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+0xf90/0xfe0
 kthread+0x726/0x8b0
 ret_from_fork+0x51b/0xa40
 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: 31128 Comm: syz.0.4718 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:asm_sysvec_apic_timer_interrupt+0x0/0x20
Code: b6 a3 78 0a e9 61 06 00 00 90 f3 0f 1e fa 0f 1f 00 fc 6a ff e8 11 05 00 00 48 89 c4 48 89 e7 e8 c6 a2 78 0a e9 41 06 00 00 90 <f3> 0f 1e fa 0f 1f 00 fc 6a ff e8 f1 04 00 00 48 89 c4 48 89 e7 e8
RSP: 0018:ffffc90007597398 EFLAGS: 00000083
RAX: ffffffff81a208c5 RBX: ffffffff81a2073f RCX: 0000000000080000
RDX: ffffc9002ec6e000 RSI: 000000000000eecf RDI: ffffffff8e34c760
RBP: ffffc90007597470 R08: ffffffff8fceef77 R09: 1ffffffff1f9ddee
R10: dffffc0000000000 R11: fffffbfff1f9ddef R12: 0000000000000000
R13: 000000000000003f R14: 0000000000000200 R15: 1ffff92000eb2e7c
FS:  00007f55ee42e6c0(0000) GS:ffff88818e326000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000011e8fc000 CR4: 00000000000006f0
Call Trace:
 <TASK>
RIP: 0010:vprintk_emit+0x45d/0x560
Code: 0f 84 44 ff ff ff e8 b2 90 20 00 fb eb 44 e8 aa 90 20 00 e8 65 b6 d6 09 4d 85 f6 74 94 e8 9b 90 20 00 fb 48 c7 c7 60 c7 34 8e <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 53 e8 0b 27
RSP: 0018:ffffc900075973c0 EFLAGS: 00000283
 _printk+0xdd/0x130
 __mlog_printk+0x283/0x2c0
 ocfs2_find_entry+0x1c32/0x2160
 ocfs2_find_files_on_disk+0xdf/0x310
 ocfs2_lookup_ino_from_name+0x52/0x100
 ocfs2_lookup+0x249/0x9c0
 lookup_one_qstr_excl+0x131/0x360
 filename_create+0x20e/0x370
 do_mknodat+0x189/0x620
 __x64_sys_mknod+0x8c/0xa0
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f55ed59acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f55ee42e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000085
RAX: ffffffffffffffda RBX: 00007f55ed815fa0 RCX: 00007f55ed59acb9
RDX: 0000000000000701 RSI: 0000000000000000 RDI: 0000200000000000
RBP: 00007f55ed608bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f55ed816038 R14: 00007f55ed815fa0 R15: 00007fff6c553428
 </TASK>
