INFO: task jfsCommit:116 blocked 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:26904 pid:116   tgid:116   ppid:2      task_flags:0x200040 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x14ef/0x4fb0
 schedule+0x164/0x360
 io_schedule+0x7f/0xd0
 lock_metapage+0x1ff/0x400
 __get_metapage+0x49a/0xde0
 diIAGRead+0xce/0x140
 diFree+0x9de/0x2ca0
 jfs_evict_inode+0x331/0x440
 evict+0x61e/0xb10
 jfs_lazycommit+0x43d/0xaa0
 kthread+0x726/0x8b0
 ret_from_fork+0x51b/0xa40
 ret_from_fork_asm+0x1a/0x30
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8e35a360 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by jfsCommit/116:
 #0: ffff88811b6b8920 (&(imap->im_aglock[index])){+.+.}-{4:4}, at: diFree+0x2e9/0x2ca0
 #1: ffff888119124150 (&jfs_ip->rdwrlock/1){.+.+}-{4:4}, at: diFree+0x307/0x2ca0
5 locks held by kworker/0:5/5887:
 #0: ffff888105af0d48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x9d4/0x17a0
 #1: ffffc90005517bc0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0xa0f/0x17a0
 #2: ffff88810aeec198 (&dev->mutex){....}-{4:4}, at: hub_event+0x17f/0x4f30
 #3: ffff8881062a2198 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x450
 #4: ffff88810baa2160 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x450
2 locks held by getty/9284:
 #0: ffff888113bd60a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900035912f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0
4 locks held by udevd/19311:
 #0: ffff8881172e1668 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xb7/0xe10
 #1: ffff888111d33088 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_seq_start+0x5c/0x420
 #2: ffff888112788a58 (kn->active#30){++++}-{0:0}, at: kernfs_seq_start+0xb2/0x420
 #3: ffff8881062a2198 (&dev->mutex){....}-{4:4}, at: manufacturer_show+0x26/0xa0

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

NMI backtrace for cpu 1
CPU: 1 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/0x300
 sys_info+0x135/0x170
 watchdog+0xf90/0xfe0
 kthread+0x726/0x8b0
 ret_from_fork+0x51b/0xa40
 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: 5887 Comm: kworker/0:5 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
Workqueue: usb_hub_wq hub_event
RIP: 0010:io_serial_out+0x7c/0xc0
Code: a0 9c fc 44 89 f9 d3 e5 49 83 c6 40 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 9c fb 03 fd 41 03 2e 89 d8 89 ea ee <5b> 41 5c 41 5e 41 5f 5d e9 d7 e6 55 06 cc 44 89 f9 80 e1 07 38 c1
RSP: 0018:ffffc90005516770 EFLAGS: 00000002
RAX: 0000000000000020 RBX: 0000000000000020 RCX: 0000000000000000
RDX: 00000000000003f8 RSI: 00000000000192d4 RDI: 00000000000192d5
RBP: 00000000000003f8 R08: ffff88816ae18237 R09: 1ffff1102d5c3046
R10: dffffc0000000000 R11: ffffffff8525f980 R12: dffffc0000000000
R13: ffffffff99df09e2 R14: ffffffff9a104f80 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88818e324000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f61455e1198 CR3: 000000010a7ba000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 serial8250_console_write+0x140c/0x1ba0
 console_flush_all+0x718/0xb20
 console_unlock+0xd1/0x1c0
 vprintk_emit+0x485/0x560
 _printk+0xdd/0x130
 sd_init+0x1847/0x3250
 gspca_dev_probe2+0x855/0x1440
 usb_probe_interface+0x668/0xc90
 really_probe+0x26d/0xac0
 __driver_probe_device+0x18c/0x320
 driver_probe_device+0x4f/0x240
 __device_attach_driver+0x279/0x430
 bus_for_each_drv+0x258/0x2f0
 __device_attach+0x2c5/0x450
 device_initial_probe+0xa1/0xd0
 bus_probe_device+0x12a/0x220
 device_add+0x7b6/0xb70
 usb_set_configuration+0x1a87/0x2110
 usb_generic_driver_probe+0x8d/0x150
 usb_probe_device+0x1c4/0x3b0
 really_probe+0x26d/0xac0
 __driver_probe_device+0x18c/0x320
 driver_probe_device+0x4f/0x240
 __device_attach_driver+0x279/0x430
 bus_for_each_drv+0x258/0x2f0
 __device_attach+0x2c5/0x450
 device_initial_probe+0xa1/0xd0
 bus_probe_device+0x12a/0x220
 device_add+0x7b6/0xb70
 usb_new_device+0xa08/0x16f0
 hub_event+0x2a1c/0x4f30
 process_scheduled_works+0xaec/0x17a0
 worker_thread+0x89f/0xd90
 kthread+0x726/0x8b0
 ret_from_fork+0x51b/0xa40
 ret_from_fork_asm+0x1a/0x30
 </TASK>
