RAX: ffffffffffffffda RBX: 00007fcbb07746d4 RCX: 0000000000455329 RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000014 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000015 R13: 0000000000000324 R14: 00000000006f7c00 R15: 0000000000000001 WARNING: CPU: 0 PID: 10322 at drivers/tty/tty_ldisc.c:531 tty_ldisc_restore drivers/tty/tty_ldisc.c:531 [inline] WARNING: CPU: 0 PID: 10322 at drivers/tty/tty_ldisc.c:531 tty_set_ldisc+0x53d/0x870 drivers/tty/tty_ldisc.c:599 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 10322 Comm: syz-executor0 Not tainted 4.17.0-rc1+ #8 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+0x1b9/0x294 lib/dump_stack.c:113 panic+0x22f/0x4de kernel/panic.c:184 __warn.cold.8+0x163/0x1b3 kernel/panic.c:536 report_bug+0x252/0x2d0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] do_error_trap+0x1de/0x490 arch/x86/kernel/traps.c:296 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992 RIP: 0010:tty_ldisc_restore drivers/tty/tty_ldisc.c:531 [inline] RIP: 0010:tty_set_ldisc+0x53d/0x870 drivers/tty/tty_ldisc.c:599 RSP: 0018:ffff8801b89c79e8 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff8801d216a3c0 RCX: ffffc90001ea1000 RDX: 0000000000040000 RSI: ffffffff8398b12d RDI: 0000000000000007 RBP: ffff8801b89c7a38 R08: ffff8801afb3c000 R09: 0000000000000006 R10: ffff8801afb3c000 R11: 0000000000000000 R12: ffff8801d216a930 R13: 00000000ffffffff R14: fffffffffffffff4 R15: ffff8801d7088f40 tiocsetd drivers/tty/tty_io.c:2336 [inline] tty_ioctl+0x3ad/0x1870 drivers/tty/tty_io.c:2580 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x1cf/0x16a0 fs/ioctl.c:684 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:701 __do_sys_ioctl fs/ioctl.c:708 [inline] __se_sys_ioctl fs/ioctl.c:706 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:706 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455329 RSP: 002b:00007fcbb0773c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fcbb07746d4 RCX: 0000000000455329 RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000014 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000015 R13: 0000000000000324 R14: 00000000006f7c00 R15: 0000000000000001 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..