INFO: task jfsCommit:125 blocked in I/O wait for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jfsCommit       state:D stack:26920 pid:125   tgid:125   ppid:2      task_flags:0x200040 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x17d9/0x56c0
 schedule+0x164/0x2b0
 io_schedule+0x7f/0xd0
 lock_metapage+0x1fe/0x400
 __get_metapage+0x47a/0xdf0
 diIAGRead+0xce/0x140
 diFree+0x9dc/0x2d00
 jfs_evict_inode+0x324/0x430
 evict+0x624/0xb50
 jfs_lazycommit+0x44c/0xac0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
INFO: task syz-executor:15171 blocked in I/O wait 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:22224 pid:15171 tgid:15171 ppid:1      task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x17d9/0x56c0
 schedule+0x164/0x2b0
 io_schedule+0x7f/0xd0
 lock_metapage+0x1fe/0x400
 __get_metapage+0x47a/0xdf0
 diRead+0x211/0xbc0
 jfs_iget+0x89/0x470
 jfs_lookup+0x220/0x420
 __lookup_slow+0x1fb/0x2f0
 lookup_slow+0x53/0x70
 path_lookupat+0x3f5/0x8c0
 filename_lookup+0x265/0x5d0
 user_path_at+0x40/0x160
 __x64_sys_umount+0xf6/0x170
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb0de59f317
RSP: 002b:00007ffe6f74c338 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb0de59f317
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe6f74c3f0
RBP: 00007ffe6f74c3f0 R08: 0000000000000000 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe6f74d4e0
R13: 00007fb0de634474 R14: 00000000000a8ef7 R15: 00007ffe6f74e5b0
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8eb59c60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by jfsCommit/125:
 #0: ffff888040000910 (&(imap->im_aglock[index])){+.+.}-{4:4}, at: diFree+0x2ee/0x2d00
 #1: ffff88811b94b640 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diFree+0x30c/0x2d00
2 locks held by getty/5424:
 #0: ffff8881144850a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900034762e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360
2 locks held by syz-executor/15171:
 #0: ffff88811b948558 (&type->i_mutex_dir_key#9){++++}-{4:4}, at: lookup_slow+0x46/0x70
 #1: ffff88811b94b640 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diRead+0x126/0xbc0
2 locks held by syz-executor/15937:
2 locks held by syz-executor/17537:
1 lock held by syz.8.2469/18136:
 #0: ffff8880325e80d8 (&type->s_umount_key#62){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
3 locks held by syz-executor/18241:
1 lock held by syz.9.2671/19205:
1 lock held by syz.7.2669/19211:
 #0: ffffffff8eb5ff68 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2d0/0x770
2 locks held by rm/19220:
 #0: ffff88812103b160 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2d/0x160
 #1: ffff888121024440 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x57/0x7d0

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

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/0x380
 sys_info+0x135/0x170
 watchdog+0xfd7/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
