RAX: ffffffffffffffda RBX: 00007fa3cc90d6d4 RCX: 00000000004552d9
RDX: 0000000000000000 RSI: 0000000020000080 RDI: ffffffffffffff9c
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000013
R13: 0000000000000435 R14: 00000000006f9598 R15: 0000000000000005
Kernel panic - not syncing: n_tty: init_tty
CPU: 1 PID: 21191 Comm: syz-executor2 Not tainted 4.16.0+ #377
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+0x1a7/0x27d lib/dump_stack.c:53
 panic+0x1f8/0x42c kernel/panic.c:183
 tty_ldisc_init+0x69/0x70 drivers/tty/tty_ldisc.c:831
 alloc_tty_struct+0x1a8/0xa50 drivers/tty/tty_io.c:2819
 tty_init_dev+0x78/0x4b0 drivers/tty/tty_io.c:1317
 ptmx_open+0xf3/0x310 drivers/tty/pty.c:832
 chrdev_open+0x257/0x730 fs/char_dev.c:417
 do_dentry_open+0x772/0xd70 fs/open.c:794
 vfs_open+0x107/0x220 fs/open.c:908
 do_last fs/namei.c:3379 [inline]
 path_openat+0x1151/0x3590 fs/namei.c:3519
 do_filp_open+0x25b/0x3b0 fs/namei.c:3554
 do_sys_open+0x502/0x6d0 fs/open.c:1101
 SYSC_openat fs/open.c:1128 [inline]
 SyS_openat+0x30/0x40 fs/open.c:1122
 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x4552d9
RSP: 002b:00007fa3cc90cc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fa3cc90d6d4 RCX: 00000000004552d9
RDX: 0000000000000000 RSI: 0000000020000080 RDI: ffffffffffffff9c
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000013
R13: 0000000000000435 R14: 00000000006f9598 R15: 0000000000000005
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..