INFO: task jfsCommit:123 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:28864 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+0x389/0x470
 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: ffffffff8e95cce0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by jfsCommit/123:
 #0: ffff88801afe8910 (&(imap->im_aglock[index])){+.+.}-{4:4}, at: diFree+0x2ec/0x2ca0
 #1: ffff88810d710a08 (&jfs_ip->rdwrlock/1){.+.+}-{4:4}, at: diFree+0x30a/0x2ca0
6 locks held by kworker/1:2/946:
 #0: ffff8881052e9540 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0xa35/0x1860
 #1: ffffc90006b8fc40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0xa70/0x1860
 #2: ffff88816bdf71d8 (&dev->mutex){....}-{4:4}, at: hub_event+0x17f/0x4f30
 #3: ffff88816bdfc568 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_event+0x217a/0x4f30
 #4: ffff88816b98cd60 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_event+0x21a2/0x4f30
 #5: ffffffff8e94f100 (console_lock){+.+.}-{0:0}, at: dev_vprintk_emit+0x355/0x420
2 locks held by getty/5441:
 #0: ffff8881131200a0 (&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
5 locks held by kworker/1:7/5729:
 #0: ffff8881052e9540 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0xa35/0x1860
 #1: ffffc9000659fc40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0xa70/0x1860
 #2: ffff88816bf871d8 (&dev->mutex){....}-{4:4}, at: hub_event+0x17f/0x4f30
 #3: ffff8881b400d1d8 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x450
 #4: ffff8881b3f241a0 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x450
2 locks held by kworker/u10:5/6036:
 #0: 
ffff8881000ac940
 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_scheduled_works+0xa35/0x1860
 #1: ffffc9000421fc40
 (
(work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa70/0x1860
4 locks held by udevd/10900:
 #0: ffff88810b9bff38 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xb7/0xe10
 #1: ffff88810d0db080 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_seq_start+0x5c/0x420
 #2: ffff888173b64c38 (kn->active#27){.+.+}-{0:0}, at: kernfs_seq_start+0xb2/0x420
 #3: ffff8881b400d1d8 (&dev->mutex){....}-{4:4}, at: manufacturer_show+0x26/0xa0
4 locks held by udevd/11262:
 #0: ffff88810b9bf638 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xb7/0xe10
 #1: ffff88810e1d5480 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_seq_start+0x5c/0x420
 #2: ffff8881741f64b8 (kn->active#27){.+.+}-{0:0}, at: kernfs_seq_start+0xb2/0x420
 #3: ffff8881b3f261d8 (&dev->mutex){....}-{4:4}, at: manufacturer_show+0x26/0xa0
2 locks held by dhcpcd/12591:
 #0: ffff8881bd24c260 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x33/0xe10
 #1: ffffffff8e962fe8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2d0/0x770
1 lock held by kworker/u10:5/12596:

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 34 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/0x300
 sys_info+0x135/0x170
 watchdog+0xfd3/0x1030
 kthread+0x389/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 12596 Comm: modprobe 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
RIP: 0010:free_pages_and_swap_cache+0x24a/0x490
Code: 31 ff e8 29 9f 9d ff 49 83 e7 02 48 8b 5c 24 38 0f 85 a5 00 00 00 e8 35 9a 9d ff 44 0f b6 7c 24 60 45 8d 67 01 44 88 64 24 60 <bf> 1f 00 00 00 44 89 fe e8 19 9d 9d ff 41 83 ff 1e 0f 87 28 01 00
RSP: 0018:ffffc900034df740 EFLAGS: 00000293
RAX: ffffffff82281d9b RBX: 00000000000001f9 RCX: ffff8881702cbb80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900034df9c8 R08: ffffea0004841707 R09: 1ffffd40009082e0
R10: dffffc0000000000 R11: fffff940009082e1 R12: 000000000000000a
R13: dffffc0000000000 R14: ffffea0004841700 R15: 0000000000000009
FS:  00007f434939a380(0000) GS:ffff8882a929f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4349416440 CR3: 000000000e74a000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 tlb_flush_mmu+0x6d3/0xa30
 tlb_finish_mmu+0xf9/0x230
 exit_mmap+0x498/0x9e0
 __mmput+0x118/0x430
 exit_mm+0x1f6/0x2d0
 do_exit+0x6a2/0x22c0
 do_group_exit+0x21b/0x2d0
 __x64_sys_exit_group+0x3f/0x40
 x64_sys_call+0x221a/0x2240
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f43494d4a90
Code: Unable to access opcode bytes at 0x7f43494d4a66.
RSP: 002b:00007fff9df413b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f43495c5860 RCX: 00007f43494d4a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f43495c5860 R08: 00007fff9df41230 R09: 00007fff9df41310
R10: 00007fff9df41270 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f43495c9658 R15: 0000000000000001
 </TASK>
