INFO: task syz-executor563:6793 can't die for more than 143 seconds. syz-executor563 R running task 27640 6793 6792 0x00004006 Call Trace: Showing all locks held in the system: 1 lock held by khungtaskd/1144: #0: ffffffff89bc3000 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:5779 1 lock held by in:imklog/6484: #0: ffff88809b8f0430 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:928 2 locks held by syz-executor563/6793: ============================================= Kernel panic - not syncing: hung_task: blocked tasks CPU: 0 PID: 1144 Comm: khungtaskd Not tainted 5.8.0-rc3-next-20200701-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:231 check_hung_uninterruptible_tasks kernel/hung_task.c:257 [inline] watchdog.cold+0x23e/0x24b kernel/hung_task.c:339 kthread+0x3b5/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Kernel Offset: disabled Rebooting in 86400 seconds..