RAX: ffffffffffffffda RBX: 00007f6be1ab56d4 RCX: 0000000000455389
RDX: 0000000000004000 RSI: 0000000020000180 RDI: ffffffffffffff9c
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014
R13: 000000000000043f R14: 00000000006f9688 R15: 0000000000000009
Kernel panic - not syncing: n_tty: init_tty
CPU: 1 PID: 22074 Comm: syz-executor3 Not tainted 4.17.0-rc2+ #19
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
 tty_ldisc_init.cold.6+0x16/0x16 drivers/tty/tty_ldisc.c:831
 alloc_tty_struct+0x1a8/0xa50 drivers/tty/tty_io.c:2819
 pty_common_install drivers/tty/pty.c:395 [inline]
 pty_unix98_install+0x25d/0x9b0 drivers/tty/pty.c:727
 tty_driver_install_tty drivers/tty/tty_io.c:1224 [inline]
 tty_init_dev+0xfd/0x460 drivers/tty/tty_io.c:1324
 ptmx_open+0x12a/0x360 drivers/tty/pty.c:832
 chrdev_open+0x256/0x760 fs/char_dev.c:417
 do_dentry_open+0x7ef/0xf10 fs/open.c:784
 vfs_open+0x139/0x230 fs/open.c:906
 do_last fs/namei.c:3365 [inline]
 path_openat+0x1676/0x4e20 fs/namei.c:3501
 do_filp_open+0x249/0x350 fs/namei.c:3535
 do_sys_open+0x56f/0x740 fs/open.c:1093
 __do_sys_openat fs/open.c:1120 [inline]
 __se_sys_openat fs/open.c:1114 [inline]
 __x64_sys_openat+0x9d/0x100 fs/open.c:1114
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455389
RSP: 002b:00007f6be1ab4c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f6be1ab56d4 RCX: 0000000000455389
RDX: 0000000000004000 RSI: 0000000020000180 RDI: ffffffffffffff9c
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014
R13: 000000000000043f R14: 00000000006f9688 R15: 0000000000000009
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..