[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Update UTMP about System Runlevel Changes.
[  OK  ] Started Load/Save RF Kill Switch Status.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.253' (ECDSA) to the list of known hosts.
syzkaller login: [  721.377884][ T1664] INFO: task syz-executor124:8492 can't die for more than 143 seconds.
[  721.386483][ T1664] task:syz-executor124 state:R  running task     stack:28296 pid: 8492 ppid:  8487 flags:0x00004006
[  721.399769][ T1664] Call Trace:
[  721.403124][ T1664]  ? find_inode+0x109/0x220
[  721.408786][ T1664]  ? lock_acquire+0x5c9/0x740
[  721.413554][ T1664]  ? lock_release+0x710/0x710
[  721.419746][ T1664]  ? ilookup5_nowait+0x5e/0xb0
[  721.424544][ T1664]  ? lock_release+0x710/0x710
[  721.430475][ T1664]  ? ilookup5_nowait+0x7e/0xb0
[  721.435278][ T1664]  ? _raw_spin_lock+0x2a/0x40
[  721.441191][ T1664]  ? find_inode+0xc1/0x220
[  721.445644][ T1664]  ? fuse_init_file_inode+0x1e0/0x1e0
[  721.452377][ T1664]  ? _raw_spin_lock+0xe/0x40
[  721.457028][ T1664]  ? ___might_sleep+0x23f/0x2c0
[  721.464466][ T1664]  ? fuse_init_file_inode+0x1e0/0x1e0
[  721.470729][ T1664]  ? iget5_locked+0x41/0x220
[  721.475358][ T1664]  ? fuse_inode_eq+0x80/0x80
[  721.481120][ T1664]  ? fuse_iget+0x271/0x610
[  721.485666][ T1664]  ? fuse_change_attributes+0x610/0x610
[  721.492910][ T1664]  ? fuse_simple_request+0x3e8/0xd10
[  721.498902][ T1664]  ? fuse_lookup_name+0x447/0x630
[  721.504173][ T1664]  ? fuse_create+0x30/0x30
[  721.510332][ T1664]  ? lockdep_unlock+0x11c/0x290
[  721.515299][ T1664]  ? __lock_acquire+0x2510/0x5500
[  721.521757][ T1664]  ? fuse_lookup.part.0+0xdf/0x390
[  721.526906][ T1664]  ? fuse_lookup_name+0x630/0x630
[  721.533390][ T1664]  ? find_held_lock+0x2d/0x110
[  721.538918][ T1664]  ? do_raw_spin_unlock+0x171/0x230
[  721.544154][ T1664]  ? fuse_lookup+0x70/0x90
[  721.549860][ T1664]  ? __lookup_hash+0x117/0x180
[  721.554724][ T1664]  ? filename_create+0x186/0x490
[  721.560971][ T1664]  ? filename_parentat+0x560/0x560
[  721.566130][ T1664]  ? getname_flags.part.0+0x1dd/0x4f0
[  721.572730][ T1664]  ? do_mkdirat+0xa0/0x2d0
[  721.577292][ T1664]  ? user_path_create+0xf0/0xf0
[  721.583331][ T1664]  ? syscall_enter_from_user_mode+0x1d/0x50
[  721.591285][ T1664]  ? do_syscall_64+0x2d/0x70
[  721.596013][ T1664]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  721.603391][ T1664] 
[  721.603391][ T1664] Showing all locks held in the system:
[  721.612037][ T1664] 1 lock held by khungtaskd/1664:
[  721.617089][ T1664]  #0: ffffffff8b363ea0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260
[  721.629668][ T1664] 1 lock held by in:imklog/8186:
[  721.634632][ T1664]  #0: ffff88802100d270 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100
[  721.645381][ T1664] 4 locks held by syz-executor124/8492:
[  721.652724][ T1664] 
[  721.655091][ T1664] =============================================
[  721.655091][ T1664] 
[  721.665044][ T1664] Kernel panic - not syncing: hung_task: blocked tasks
[  721.671910][ T1664] CPU: 0 PID: 1664 Comm: khungtaskd Not tainted 5.11.0-rc2-next-20210107-syzkaller #0
[  721.681463][ T1664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  721.691526][ T1664] Call Trace:
[  721.694826][ T1664]  dump_stack+0x107/0x163
[  721.699217][ T1664]  panic+0x306/0x73d
[  721.703144][ T1664]  ? __warn_printk+0xf3/0xf3
[  721.707769][ T1664]  ? watchdog.cold+0x22d/0x248
[  721.712841][ T1664]  watchdog.cold+0x23e/0x248
[  721.717467][ T1664]  ? trace_sched_process_hang+0x280/0x280
[  721.723314][ T1664]  kthread+0x3b1/0x4a0
[  721.727436][ T1664]  ? kthread_create_worker_on_cpu+0xf0/0xf0
[  721.733343][ T1664]  ret_from_fork+0x1f/0x30
[  721.738615][ T1664] Kernel Offset: disabled
[  721.742948][ T1664] Rebooting in 86400 seconds..