INFO: task syz.1.386:8629 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.386       state:D stack:25464 pid:8629  tgid:8628  ppid:8322   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x17b4/0x5680
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_write_slowpath+0x883/0x1080
 down_write+0x1bc/0x200
 super_lock+0x289/0x3d0
 grab_super+0xb9/0x380
 sget_fc+0x2c2/0xa40
 get_tree_bdev_flags+0x214/0x4f0
 vfs_get_tree+0x92/0x2a0
 do_new_mount+0x341/0xd30
 __se_sys_mount+0x31d/0x420
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdf7339c819
RSP: 002b:00007fdf7428f028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fdf73615fa0 RCX: 00007fdf7339c819
RDX: 0000200000000040 RSI: 0000200000000000 RDI: 0000200000000180
RBP: 00007fdf73432c91 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000080c80e R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdf73616038 R14: 00007fdf73615fa0 R15: 00007ffe0f239db8
 </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 getty/5660:
 #0: ffff8881095a10a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000346b2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13a0
3 locks held by syz-executor/5838:
3 locks held by syz-executor/5843:
2 locks held by syz-executor/6376:
2 locks held by syz-executor/6827:
2 locks held by syz-executor/7171:
1 lock held by syz.1.386/8629:
 #0: ffff8881097ce0d8 (&type->s_umount_key#67){++++}-{4:4}, at: super_lock+0x289/0x3d0
1 lock held by syz.0.506/9327:
 #0: ffff8881151600d8 (&type->s_umount_key#67){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.6.532/9525:
 #0: ffff8881097ce0d8 (&type->s_umount_key#67){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.7.567/9820:
 #0: ffff8881097ce0d8 (&type->s_umount_key#67){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz-executor/9838:
 #0: ffffffff8e962fe8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x38d/0x770
1 lock held by syz.9.599/10193:
3 locks held by syz.8.597/10199:
2 locks held by dhcpcd/10214:
 #0: ffff88802ad1c260 (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

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

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: 5818 Comm: syz-executor 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:kasan_check_range+0x4/0x2c0
Code: 48 89 df 48 c7 c6 ca fd 24 8e e8 17 2e f7 fe 90 0f 0b cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 <55> 41 57 41 56 41 55 41 54 53 b0 01 48 85 f6 0f 84 ae 01 00 00 4c
RSP: 0018:ffffc900047a78e0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff888121028280 RCX: ffffffff81a271bd
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888121028280
RBP: ffffc900047a7990 R08: ffffffff81b2fc75 R09: ffffffff9a505588
R10: 0000000000000003 R11: ffffffff817466c0 R12: dffffc0000000000
R13: ffff8881bdc20000 R14: ffff888121028284 R15: dffffc0000000000
FS:  000055559150a540(0000) GS:ffff88818dc15000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc39afe888 CR3: 0000000114342000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 do_raw_spin_unlock+0x4d/0x210
 _raw_spin_unlock+0x1e/0x50
 finish_task_switch+0x3f0/0xbe0
 __schedule+0x17bc/0x5680
 schedule+0x164/0x360
 do_nanosleep+0x1c2/0x620
 hrtimer_nanosleep+0x18f/0x3a0
 __se_sys_clock_nanosleep+0x35b/0x3b0
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0a8c757997
Code: 48 89 fa 4c 89 df e8 a8 56 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007fff95be5d70 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 000055559150a540 RCX: 00007f0a8c757997
RDX: 00007fff95be5db0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fff95be6290 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004
R13: 00007fff95be5dec R14: 00007fff95be5e80 R15: 0000000000000000
 </TASK>
