INFO: task syz.0.231:7211 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.231       state:D stack:23720 pid:7211  tgid:7210  ppid:5814   task_flags:0x400140 flags:0x00080003
Call Trace:
 <TASK>
 __schedule+0x1854/0x4d60
 schedule+0x164/0x360
 io_schedule+0x7f/0xd0
 lock_metapage+0x1ff/0x400
 __get_metapage+0x497/0xde0
 xtSplitPage+0x284/0x2170
 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+0x9a0/0x1130
 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+0xf0/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f113119acb9
RSP: 002b:00007f1131ffc028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f1131415fa0 RCX: 00007f113119acb9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007f1131208bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1131416038 R14: 00007f1131415fa0 R15: 00007ffc7f70c608
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e13e760 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
4 locks held by kworker/u9:4/4193:
 #0: ffff888104ec6948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x9d4/0x17d0
 #1: ffffc900232dfba0 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa0f/0x17d0
 #2: ffff8881151080e0 (&type->s_umount_key#63){++++}-{4:4}, at: super_trylock_shared+0x20/0xf0
 #3: ffff888116215430 (&jfs_ip->commit_mutex){+.+.}-{4:4}, at: jfs_commit_inode+0x1ca/0x530
1 lock held by udevd/5257:
2 locks held by getty/5635:
 #0: ffff888175be40a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000356e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45f/0x14a0
4 locks held by udevd/5811:
2 locks held by udevd/5822:
4 locks held by syz.0.231/7211:
 #0: ffff888115108420 (sb_writers#17){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160
 #1: ffff8881162157e0 (&sb->s_type->i_mutex_key#38){+.+.}-{4:4}, at: generic_file_write_iter+0x11e/0x680
 #2: ffff8881162153a0 (&jfs_ip->rdwrlock#2){++++}-{4:4}, at: jfs_get_block+0x153/0xad0
 #3: ffff888116215430 (&jfs_ip->commit_mutex){+.+.}-{4:4}, at: extAlloc+0x130/0x1020
2 locks held by syz.1.534/9298:
 #0: ffff8881151080e0 (&type->s_umount_key#63){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
 #1: ffff8881096bc820 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: sync_inodes_sb+0x1ac/0xa40
1 lock held by syz-executor/9954:
1 lock held by syz-executor/11664:
 #0: ffffffff8e1441f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x3f2/0x7e0

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

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+0x1a9/0x280
 nmi_cpu_backtrace+0x3a9/0x3e0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 watchdog+0xf5b/0xfa0
 kthread+0x726/0x8b0
 ret_from_fork+0x4d3/0x870
 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: 12436 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:unwind_next_frame+0x1323/0x2380
Code: 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 75 27 49 63 07 4c 01 f8 49 8d 4f 04 4c 39 e0 48 0f 46 e9 <49> 8d 47 fc 48 0f 47 d8 4d 0f 46 ef 48 39 dd 76 a2 e9 7b ef ff ff
RSP: 0018:ffffc900077af378 EFLAGS: 00000212
RAX: ffffffff8227e660 RBX: ffffffff8fb9c60c RCX: ffffffff8fb9c600
RDX: ffffffff8fb9c5f0 RSI: ffffffff9038be9a RDI: ffffffff8bdef980
RBP: ffffffff8fb9c5f0 R08: 0000000000000008 R09: ffffffff81745275
R10: ffffc900077af498 R11: ffffffff81ad7f80 R12: ffffffff8227e61d
R13: ffffffff8fb9c5f0 R14: ffffc900077af448 R15: ffffffff8fb9c5fc
FS:  0000555583546500(0000) GS:ffff88818e712000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd70135df0 CR3: 000000011dac4000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 __kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5c/0x80
 kfree+0x198/0x6c0
 walk_component+0x17f/0x400
 link_path_walk+0x75b/0xea0
 path_openat+0x29e/0x3890
 do_filp_open+0x22d/0x490
 do_sys_openat2+0x12f/0x1d0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xf0/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ffb2715b58e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007ffd701362b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000555583546500 RCX: 00007ffb2715b58e
RDX: 0000000000080001 RSI: 00007ffb2720abe9 RDI: ffffffffffffff9c
RBP: 00007ffb2720abe9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 00007ffd70136390 R14: 000000000003f6e5 R15: 00007ffd70136900
 </TASK>
