INFO: task jfsCommit:123 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:jfsCommit       state:D stack:27064 pid:123   tgid:123   ppid:2      task_flags:0x200040 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x1821/0x5740
 schedule+0x164/0x360
 io_schedule+0x7f/0xd0
 lock_metapage+0x1ff/0x400
 __get_metapage+0x49a/0xe20
 diIAGRead+0xce/0x140
 diFree+0x9e1/0x2ca0
 jfs_evict_inode+0x331/0x440
 evict+0x61e/0xb10
 jfs_lazycommit+0x43d/0xaa0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </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 jfsCommit/123:
 #0: ffff8881bf3e8910 (&(imap->im_aglock[index])){+.+.}-{4:4}, at: diFree+0x2ec/0x2ca0
 #1: ffff8881a9ff4830 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diFree+0x30a/0x2ca0
2 locks held by getty/5439:
 #0: ffff88816d8c30a0 (&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
3 locks held by kworker/1:8/8949:
 #0: ffff88810006b140 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0xa35/0x1860
 #1: ffffc9000387fc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0xa70/0x1860
 #2: ffff8881bd3e2250 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x202/0x3d0
2 locks held by syz-executor/12465:
 #0: ffff8881acf6a0d8 (&type->s_umount_key#87){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edfab20 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/13780:
 #0: ffff88816e0140d8 (&type->s_umount_key#87){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edfab20 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/14867:
 #0: ffff8881205900d8 (&type->s_umount_key#87){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edfab20 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
1 lock held by syz.4.992/15467:
 #0: ffff8881acf6a0d8 (&type->s_umount_key#87){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
2 locks held by syz-executor/15505:
 #0: ffff88810f7400d8 (&type->s_umount_key#87){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edfab20 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
1 lock held by syz-executor/15778:
 #0: ffffffff8e963068 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2d0/0x770
1 lock held by dhcpcd-run-hook/16581:

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

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: 12 Comm: kworker/u8:0 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
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:deref_stack_reg+0x63/0x230
Code: 48 89 df e8 8f e5 b9 00 4c 8b 04 24 48 be 00 00 00 00 00 fc ff df 48 89 5c 24 10 49 8b 5f 08 4d 8d 77 10 4d 89 f5 49 c1 ed 03 <41> 80 7c 35 00 00 74 16 4c 89 f7 e8 5d e5 b9 00 4c 8b 04 24 48 be
RSP: 0018:ffffc900000073a0 EFLAGS: 00000a02
RAX: fffffffffffffff0 RBX: ffffc90000000000 RCX: 0000000000000000
RDX: ffffc90000007508 RSI: dffffc0000000000 RDI: ffffc900000074c8
RBP: dffffc0000000000 R08: ffffc90000007d30 R09: 0000000000000000
R10: ffffc90000007518 R11: fffff52000000ea5 R12: 1ffff92000000e9a
R13: 1ffff92000000e9b R14: ffffc900000074d8 R15: ffffc900000074c8
FS:  0000000000000000(0000) GS:ffff88818dc87000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007febf172e1d0 CR3: 0000000175bac000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 unwind_next_frame+0x19d5/0x2550
 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+0x1c5/0x640
 skb_release_data+0x828/0xa60
 __kfree_skb+0x5d/0x210
 __netif_receive_skb_core+0x2c10/0x3170
 process_backlog+0x76d/0x1950
 __napi_poll+0xae/0x340
 net_rx_action+0x627/0xf70
 handle_softirqs+0x22a/0x840
 do_softirq+0x76/0xd0
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0xf8/0x130
 __dev_queue_xmit+0x1fe5/0x3950
 batadv_send_skb_packet+0x418/0x690
 batadv_iv_send_outstanding_bat_ogm_packet+0x631/0x7e0
 process_scheduled_works+0xb5d/0x1860
 worker_thread+0xa53/0xfc0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
