RAX: ffffffffffffffda RBX: 00007fb5a10746d4 RCX: 00000000004548b9 RDX: 00000000202a7ffc RSI: 0000000000005423 RDI: 0000000000000014 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000016 R13: 000000000000031b R14: 00000000006f6b28 R15: 0000000000000001 WARNING: CPU: 0 PID: 22846 at drivers/tty/tty_ldisc.c:531 tty_ldisc_restore drivers/tty/tty_ldisc.c:531 [inline] WARNING: CPU: 0 PID: 22846 at drivers/tty/tty_ldisc.c:531 tty_set_ldisc+0x4c6/0x7a0 drivers/tty/tty_ldisc.c:599 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 22846 Comm: syz-executor0 Not tainted 4.16.0-rc7+ #370 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x24d lib/dump_stack.c:53 panic+0x1e4/0x41c kernel/panic.c:183 __warn+0x1dc/0x200 kernel/panic.c:547 report_bug+0x1f4/0x2b0 lib/bug.c:186 fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178 fixup_bug arch/x86/kernel/traps.c:247 [inline] do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:986 RIP: 0010:tty_ldisc_restore drivers/tty/tty_ldisc.c:531 [inline] RIP: 0010:tty_set_ldisc+0x4c6/0x7a0 drivers/tty/tty_ldisc.c:599 RSP: 0018:ffff8801ad2479f0 EFLAGS: 00010246 RAX: 0000000000010000 RBX: ffff8801b221b4c0 RCX: ffffffff82f49246 RDX: 0000000000010000 RSI: ffffc900065d7000 RDI: 0000000000000282 RBP: ffff8801ad247a40 R08: 1ffff10035a48efe R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffff R13: ffff8801b221ba30 R14: ffff8801b5290900 R15: fffffffffffffff4 tiocsetd drivers/tty/tty_io.c:2336 [inline] tty_ioctl+0x492/0x1610 drivers/tty/tty_io.c:2580 vfs_ioctl fs/ioctl.c:46 [inline] do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4548b9 RSP: 002b:00007fb5a1073c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fb5a10746d4 RCX: 00000000004548b9 RDX: 00000000202a7ffc RSI: 0000000000005423 RDI: 0000000000000014 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000016 R13: 000000000000031b R14: 00000000006f6b28 R15: 0000000000000001 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..