INFO: task syz-executor.5:21095 can't die for more than 143 seconds. task:syz-executor.5 state:R running task stack:25880 pid:21095 ppid: 6925 flags:0x00024006 Call Trace: context_switch kernel/sched/core.c:4984 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6265 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6431 __cond_resched+0x13/0x20 kernel/sched/core.c:8144 _cond_resched include/linux/sched.h:2025 [inline] task_work_run+0xf5/0x1a0 kernel/task_work.c:166 tracehook_notify_signal include/linux/tracehook.h:214 [inline] handle_signal_work kernel/entry/common.c:146 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x256/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f149c8ecae9 RSP: 002b:00007f1499e41188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: 0000000000000200 RBX: 00007f149ca00020 RCX: 00007f149c8ecae9 RDX: 000000000000b721 RSI: 0000000000002120 RDI: 0000000000000004 RBP: 00007f149c946f25 R08: 0000000020000000 R09: 0000000000000008 R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe979b274f R14: 00007f1499e41300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8bb83a60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458 1 lock held by in:imklog/6188: 2 locks held by agetty/6414: #0: ffff88801d600098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252 #1: ffffc90002aac2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113 2 locks held by agetty/6418: #0: ffff88801c845098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252 #1: ffffc90002ad82e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113 =============================================