Warning: Permanently added '10.128.1.58' (ECDSA) to the list of known hosts.
syzkaller login: [  721.402601][ T1657] INFO: task syz-executor979:8499 can't die for more than 143 seconds.
[  721.411239][ T1657] task:syz-executor979 state:R  running task     stack:27176 pid: 8499 ppid:  8494 flags:0x00004006
[  721.424621][ T1657] Call Trace:
[  721.427943][ T1657]  ? lock_acquire+0x29d/0x750
[  721.434041][ T1657]  ? find_held_lock+0x2d/0x110
[  721.438845][ T1657]  ? find_held_lock+0x2d/0x110
[  721.446008][ T1657]  ? lock_downgrade+0x6d0/0x6d0
[  721.450895][ T1657]  ? iget5_locked+0xcc/0x2d0
[  721.456816][ T1657]  ? fuse_init_file_inode+0x1e0/0x1e0
[  721.462220][ T1657]  ? _raw_spin_lock+0x2a/0x40
[  721.468245][ T1657]  ? iget5_locked+0xbd/0x2d0
[  721.473715][ T1657]  ? fuse_inode_eq+0x80/0x80
[  721.478336][ T1657]  ? fuse_iget+0x195/0x610
[  721.484006][ T1657]  ? fuse_change_attributes+0x610/0x610
[  721.489583][ T1657]  ? fuse_simple_request+0x3e8/0xd90
[  721.496148][ T1657]  ? fuse_lookup_name+0x447/0x630
[  721.501202][ T1657]  ? fuse_create+0x30/0x30
[  721.506862][ T1657]  ? find_held_lock+0x2d/0x110
[  721.511661][ T1657]  ? mark_held_locks+0x9f/0xe0
[  721.517804][ T1657]  ? fuse_lookup.part.0+0xdf/0x390
[  721.523754][ T1657]  ? d_alloc_parallel+0x938/0x1ae0
[  721.528897][ T1657]  ? fuse_lookup_name+0x630/0x630
[  721.535375][ T1657]  ? lock_downgrade+0x6d0/0x6d0
[  721.540267][ T1657]  ? __d_lookup+0x477/0x760
[  721.546127][ T1657]  ? fuse_atomic_open+0x2de/0x440
[  721.551177][ T1657]  ? fuse_lookup+0x90/0x90
[  721.558050][ T1657]  ? lookup_open.isra.0+0xc3d/0x13d0
[  721.564265][ T1657]  ? vfs_unlink+0x600/0x600
[  721.568834][ T1657]  ? path_openat+0x9af/0x27a0
[  721.575787][ T1657]  ? path_lookupat+0x830/0x830
[  721.580589][ T1657]  ? lockdep_hardirqs_on_prepare+0x420/0x420
[  721.587966][ T1657]  ? do_filp_open+0x17e/0x3c0
[  721.593819][ T1657]  ? may_open_dev+0xf0/0xf0
[  721.598363][ T1657]  ? do_raw_spin_lock+0x120/0x2b0
[  721.604593][ T1657]  ? rwlock_bug.part.0+0x90/0x90
[  721.609555][ T1657]  ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70
[  721.617054][ T1657]  ? _raw_spin_unlock+0x24/0x40
[  721.621926][ T1657]  ? alloc_fd+0x2da/0x650
[  721.627474][ T1657]  ? do_sys_openat2+0x16d/0x420
[  721.633314][ T1657]  ? build_open_flags+0x680/0x680
[  721.638383][ T1657]  ? find_held_lock+0x2d/0x110
[  721.644431][ T1657]  ? __x64_sys_openat+0x13f/0x1f0
[  721.649489][ T1657]  ? __ia32_sys_open+0x1c0/0x1c0
[  721.655713][ T1657]  ? syscall_enter_from_user_mode+0x1d/0x50
[  721.661646][ T1657]  ? do_syscall_64+0x2d/0x70
[  721.667693][ T1657]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  721.675323][ T1657] 
[  721.675323][ T1657] Showing all locks held in the system:
[  721.683983][ T1657] 1 lock held by khungtaskd/1657:
[  721.689017][ T1657]  #0: ffffffff8b78f920 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x28c
[  721.700278][ T1657] 1 lock held by in:imklog/8187:
[  721.706036][ T1657]  #0: ffff88801373e870 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100
[  721.716054][ T1657] 2 locks held by syz-executor979/8499:
[  721.721612][ T1657] 
[  721.725158][ T1657] =============================================
[  721.725158][ T1657] 
[  721.734419][ T1657] Kernel panic - not syncing: hung_task: blocked tasks
[  721.741271][ T1657] CPU: 0 PID: 1657 Comm: khungtaskd Not tainted 5.10.0-next-20201216-syzkaller #0
[  721.750469][ T1657] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  721.760526][ T1657] Call Trace:
[  721.763810][ T1657]  dump_stack+0x107/0x163
[  721.768160][ T1657]  panic+0x343/0x77f
[  721.772066][ T1657]  ? __warn_printk+0xf3/0xf3
[  721.776683][ T1657]  ? watchdog.cold+0x146/0x31d
[  721.781465][ T1657]  watchdog.cold+0x157/0x31d
[  721.786082][ T1657]  ? trace_sched_process_hang+0x2a0/0x2a0
[  721.791841][ T1657]  kthread+0x3b1/0x4a0
[  721.795935][ T1657]  ? kthread_create_worker_on_cpu+0xf0/0xf0
[  721.801853][ T1657]  ret_from_fork+0x1f/0x30
[  721.807043][ T1657] Kernel Offset: disabled
[  721.811372][ T1657] Rebooting in 86400 seconds..