INFO: task syz.2.154:5286 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.154       state:D stack:27712 pid: 5286 ppid:  4188 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11bb/0x4390 kernel/sched/core.c:6395
 schedule+0x11b/0x1e0 kernel/sched/core.c:6478
 io_schedule+0x7c/0xd0 kernel/sched/core.c:8503
 __lock_metapage+0x1a9/0x380 fs/jfs/jfs_metapage.c:49
 lock_metapage fs/jfs/jfs_metapage.c:63 [inline]
 __get_metapage+0x43e/0x1060 fs/jfs/jfs_metapage.c:640
 ea_write+0x5df/0xdd0 fs/jfs/xattr.c:256
 ea_put fs/jfs/xattr.c:626 [inline]
 __jfs_setxattr+0x7cf/0x1000 fs/jfs/xattr.c:792
 __jfs_xattr_set+0xd7/0x160 fs/jfs/xattr.c:941
 __vfs_setxattr+0x3e0/0x420 fs/xattr.c:182
 __vfs_setxattr_noperm+0x129/0x5e0 fs/xattr.c:216
 vfs_setxattr+0x168/0x2f0 fs/xattr.c:303
 do_setxattr fs/xattr.c:588 [inline]
 setxattr+0x2da/0x300 fs/xattr.c:611
 path_setxattr+0x142/0x280 fs/xattr.c:630
 __do_sys_setxattr fs/xattr.c:646 [inline]
 __se_sys_setxattr fs/xattr.c:642 [inline]
 __x64_sys_setxattr+0xb7/0xd0 fs/xattr.c:642
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fdbdb341749
RSP: 002b:00007fdbd9587038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007fdbdb598090 RCX: 00007fdbdb341749
RDX: 0000200000000140 RSI: 0000200000000100 RDI: 0000200000000000
RBP: 00007fdbdb3c5f91 R08: 0000000000000002 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdbdb598128 R14: 00007fdbdb598090 R15: 00007ffd0f272ab8
 </TASK>

Showing all locks held in the system:
4 locks held by kworker/u4:0/9:
 #0: 
ffff888018980138
 ((wq_completion)writeback
){+.+.}-{0:0}
, at: process_one_work+0x760/0x1000 kernel/workqueue.c:-1
 #1: 
ffffc90000ce7d00
 (
(work_completion)(&(&wb->dwork)->work)
){+.+.}-{0:0}
, at: process_one_work+0x7a3/0x1000 kernel/workqueue.c:2285
 #2: 
ffff8880258780e0
 (
&type->s_umount_key#89){++++}-{3:3}, at: trylock_super+0x1c/0xf0 fs/super.c:418
 #3: 
ffff888060ddc288
 (
&jfs_ip->commit_mutex
){+.+.}-{3:3}
, at: jfs_commit_inode+0x1c7/0x520 fs/jfs/inode.c:108