RDX: 0000000000000000 RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
(UME) 
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000013
R13: 0000000000000435 R14: 00000000006f8598 R15: 0000000000000004
Kernel panic - not syncing: n_tty: init_tty
268*64kB 
CPU: 1 PID: 16413 Comm: syz-executor2 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
(UME) 
192*128kB 
 panic+0x1e4/0x41c kernel/panic.c:183
(UM) 
76*256kB 
 tty_ldisc_init+0x69/0x70 drivers/tty/tty_ldisc.c:831
 alloc_tty_struct+0x18b/0xa20 drivers/tty/tty_io.c:2819
(UME) 
20*512kB 
(UME) 
17*1024kB 
 tty_init_dev+0x78/0x4b0 drivers/tty/tty_io.c:1317
(UME) 
 ptmx_open+0xf3/0x310 drivers/tty/pty.c:832
4*2048kB 
 chrdev_open+0x257/0x730 fs/char_dev.c:417
(UME) 
525*4096kB 
(M) 
 do_dentry_open+0x667/0xd40 fs/open.c:752
= 2255212kB
 vfs_open+0x107/0x220 fs/open.c:866
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
 do_last fs/namei.c:3379 [inline]
 path_openat+0x1151/0x3530 fs/namei.c:3519
12354 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
 do_filp_open+0x25b/0x3b0 fs/namei.c:3554
Free swap  = 0kB
Total swap = 0kB
1965969 pages RAM
 do_sys_open+0x502/0x6d0 fs/open.c:1059
0 pages HighMem/MovableOnly
333451 pages reserved
 SYSC_openat fs/open.c:1086 [inline]
 SyS_openat+0x30/0x40 fs/open.c:1080
 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x4548b9
RSP: 002b:00007ff72d6c3c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ff72d6c46d4 RCX: 00000000004548b9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000013
R13: 0000000000000435 R14: 00000000006f8598 R15: 0000000000000004
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..