Warning: Permanently added '10.128.0.217' (ECDSA) to the list of known hosts.
syzkaller login: [  721.475367][ T1643] INFO: task syz-executor138:8529 can't die for more than 143 seconds.
[  721.483860][ T1643] task:syz-executor138 state:R  running task     stack:27904 pid: 8529 ppid:  8524 flags:0x00004006
[  721.498234][ T1643] Call Trace:
[  721.501576][ T1643]  ? find_held_lock+0x2d/0x110
[  721.507296][ T1643]  ? lock_acquire+0x5d3/0x750
[  721.512001][ T1643]  ? rcu_read_lock_sched_held+0x3a/0x70
[  721.519338][ T1643]  ? lock_release+0x710/0x710
[  721.524048][ T1643]  ? rcu_is_watching+0xe/0xc0
[  721.530176][ T1643]  ? lock_downgrade+0x6d0/0x6d0
[  721.535884][ T1643]  ? lock_release+0x710/0x710
[  721.540587][ T1643]  ? iget5_locked+0xcc/0x2d0
[  721.546778][ T1643]  ? lock_downgrade+0x6d0/0x6d0
[  721.551664][ T1643]  ? _raw_spin_unlock+0x12/0x40
[  721.557760][ T1643]  ? find_inode+0x109/0x220
[  721.562283][ T1643]  ? fuse_init_file_inode+0x1e0/0x1e0
[  721.569039][ T1643]  ? fuse_init_file_inode+0x1e0/0x1e0
[  721.574439][ T1643]  ? fuse_init_file_inode+0x1e0/0x1e0
[  721.581076][ T1643]  ? iget5_locked+0xbd/0x2d0
[  721.586551][ T1643]  ? fuse_inode_eq+0x80/0x80
[  721.591213][ T1643]  ? fuse_iget+0x271/0x610
[  721.596926][ T1643]  ? fuse_change_attributes+0x610/0x610
[  721.602522][ T1643]  ? fuse_simple_request+0x3e8/0xd90
[  721.609294][ T1643]  ? fuse_lookup_name+0x447/0x630
[  721.614379][ T1643]  ? fuse_create+0x30/0x30
[  721.620358][ T1643]  ? find_held_lock+0x2d/0x110
[  721.627254][ T1643]  ? mark_held_locks+0x9f/0xe0
[  721.632054][ T1643]  ? fuse_lookup.part.0+0xdf/0x390
[  721.638555][ T1643]  ? d_alloc_parallel+0x938/0x1ae0
[  721.643705][ T1643]  ? fuse_lookup_name+0x630/0x630
[  721.649990][ T1643]  ? lock_downgrade+0x6d0/0x6d0
[  721.654880][ T1643]  ? __d_lookup+0x477/0x760
[  721.660913][ T1643]  ? fuse_atomic_open+0x2de/0x440
[  721.666931][ T1643]  ? fuse_lookup+0x90/0x90
[  721.671375][ T1643]  ? lookup_open.isra.0+0xc3d/0x13d0
[  721.677870][ T1643]  ? vfs_unlink+0x600/0x600
[  721.682436][ T1643]  ? path_openat+0x9af/0x27a0
[  721.688460][ T1643]  ? path_lookupat+0x830/0x830
[  721.693260][ T1643]  ? lockdep_hardirqs_on_prepare+0x420/0x420
[  721.700446][ T1643]  ? do_filp_open+0x17e/0x3c0
[  721.705958][ T1643]  ? may_open_dev+0xf0/0xf0
[  721.710492][ T1643]  ? do_raw_spin_lock+0x120/0x2b0
[  721.716844][ T1643]  ? rwlock_bug.part.0+0x90/0x90
[  721.721815][ T1643]  ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70
[  721.729625][ T1643]  ? _raw_spin_unlock+0x24/0x40
[  721.734501][ T1643]  ? alloc_fd+0x2da/0x650
[  721.740668][ T1643]  ? do_sys_openat2+0x16d/0x420
[  721.746584][ T1643]  ? build_open_flags+0x680/0x680
[  721.751656][ T1643]  ? __x64_sys_openat+0x13f/0x1f0
[  721.759412][ T1643]  ? __ia32_sys_open+0x1c0/0x1c0
[  721.764395][ T1643]  ? syscall_enter_from_user_mode+0x1d/0x50
[  721.771559][ T1643]  ? do_syscall_64+0x2d/0x70
[  721.776940][ T1643]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  721.783156][ T1643] 
[  721.783156][ T1643] Showing all locks held in the system:
[  721.792117][ T1643] 1 lock held by khungtaskd/1643:
[  721.797954][ T1643]  #0: ffffffff8b793ae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x28c
[  721.808683][ T1643] 1 lock held by in:imklog/8202:
[  721.813627][ T1643]  #0: ffff8880121cb9f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100
[  721.825372][ T1643] 2 locks held by syz-executor138/8529:
[  721.830961][ T1643] 
[  721.833284][ T1643] =============================================
[  721.833284][ T1643] 
[  721.843395][ T1643] Kernel panic - not syncing: hung_task: blocked tasks
[  721.850248][ T1643] CPU: 0 PID: 1643 Comm: khungtaskd Not tainted 5.10.0-next-20201221-syzkaller #0
[  721.859446][ T1643] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  721.869501][ T1643] Call Trace:
[  721.872783][ T1643]  dump_stack+0x107/0x163
[  721.877125][ T1643]  panic+0x343/0x77f
[  721.881027][ T1643]  ? __warn_printk+0xf3/0xf3
[  721.885637][ T1643]  ? watchdog.cold+0x146/0x31d
[  721.890417][ T1643]  watchdog.cold+0x157/0x31d
[  721.895022][ T1643]  ? trace_sched_process_hang+0x2a0/0x2a0
[  721.900758][ T1643]  kthread+0x3b1/0x4a0
[  721.904841][ T1643]  ? kthread_create_worker_on_cpu+0xf0/0xf0
[  721.910760][ T1643]  ret_from_fork+0x1f/0x30
[  721.915968][ T1643] Kernel Offset: disabled
[  721.920294][ T1643] Rebooting in 86400 seconds..