INFO: task syz.2.263:8035 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.263       state:D stack:25608 pid:8035  tgid:8015  ppid:7635   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x15dd/0x52d0
 schedule+0x164/0x360
 jfs_flush_journal+0x729/0xef0
 jfs_sync_fs+0x7d/0xa0
 sync_filesystem+0x1cf/0x230
 jfs_reconfigure+0xc6/0xa00
 reconfigure_super+0x227/0x8a0
 vfs_fsconfig_locked+0x171/0x320
 __se_sys_fsconfig+0x6c9/0x820
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f624539c799
RSP: 002b:00007f62462f9028 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007f6245616090 RCX: 00007f624539c799
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000004
RBP: 00007f6245432c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6245616128 R14: 00007f6245616090 R15: 00007ffc503ac378
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e75e3e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
1 lock held by dhcpcd/5552:
 #0: ffffffff8fbcccc8 (rtnl_mutex){+.+.}-{4:4}, at: devinet_ioctl+0x32b/0x1b30
2 locks held by getty/5632:
 #0: ffff88810dd920a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000356e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0
2 locks held by syz.2.263/8035:
 #0: ffff88810ebb6070 (&fc->uapi_mutex){+.+.}-{4:4}, at: __se_sys_fsconfig+0x69d/0x820
 #1: ffff888111f600e0 (&type->s_umount_key#59){++++}-{4:4}, at: vfs_fsconfig_locked+0x169/0x320
1 lock held by syz.0.351/8962:
 #0: ffff888111f600e0 (&type->s_umount_key#59){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.2.539/10627:
 #0: ffff888111f600e0 (&type->s_umount_key#59){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.2.539/10630:
 #0: ffff888111f600e0 (&type->s_umount_key#59){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz-executor/11404:
9 locks held by syz-executor/12229:
 #0: ffff88810f556420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb90
 #1: ffff88810f416088 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1de/0x540
 #2: ffff88816f7665a8 (kn->active#48){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x231/0x540
 #3: ffffffff8f441528 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd7/0x370
 #4: ffff8881193dc0e8 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0xb6/0x860
 #5: ffff88810e992250 (&devlink->lock_key#19){+.+.}-{4:4}, at: nsim_drv_remove+0x50/0x170
 #6: ffffffff8fbcccc8 (rtnl_mutex){+.+.}-{4:4}, at: nsim_destroy+0xed/0x680
 #7: ffff888113658d40 (&dev_instance_lock_key#24){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x118e/0x2370
 #8: ffffffff8e764678 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x38d/0x770
2 locks held by syz.0.721/12313:

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

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+0xfd9/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 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: 0 Comm: swapper/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
RIP: 0010:pv_native_safe_halt+0xf/0x20
Code: 8e 6c 02 c3 cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 43 02 1b 00 fb f4 <e9> fc e9 02 00 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90
RSP: 0018:ffffffff8e407dc0 EFLAGS: 00000206
RAX: 00000000000e4db7 RBX: ffffffff819a957d RCX: 0000000080000001
RDX: 0000000000000001 RSI: ffffffff8def5d7e RDI: ffffffff8c27ba00
RBP: ffffffff8e407eb0 R08: ffff88812103395b R09: 1ffff1102420672b
R10: dffffc0000000000 R11: ffffed102420672c R12: ffffffff90118bb0
R13: 1ffffffff1c929d8 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88818de5f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563dd4459131 CR3: 00000001799e4000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 default_idle+0x9/0x20
 default_idle_call+0x72/0xb0
 do_idle+0x1bd/0x500
 cpu_startup_entry+0x43/0x60
 rest_init+0x2de/0x300
 start_kernel+0x385/0x3d0
 x86_64_start_reservations+0x24/0x30
 x86_64_start_kernel+0x143/0x1c0
 common_startup_64+0x13e/0x147
 </TASK>
