BUG: unable to handle kernel paging request at fffffbfffffffffe
IP: devpts_mntget+0x135/0x280 fs/devpts/inode.c:173
PGD 21ffd3067 P4D 21ffd3067 PUD 21ffd2067 PMD 21fe1a067 PTE 0
Oops: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 13529 Comm: syz-executor3 Not tainted 4.15.0-rc3+ #219
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:devpts_mntget+0x135/0x280 fs/devpts/inode.c:173
RSP: 0018:ffff8801c7c8fa50 EFLAGS: 00010a03
RAX: dffffc0000000000 RBX: ffffffffffffffed RCX: ffffffff81d27730
RDX: 1ffffffffffffffe RSI: ffffc90003c4d000 RDI: fffffffffffffff5
RBP: ffff8801c7c8fae0 R08: ffffffff85e13748 R09: 1ffff10038f91efd
R10: ffff8801d9990300 R11: 0000000000000000 R12: 1ffff10038f91f4a
R13: ffff8801c7c8fa70 R14: ffff8801c0a53d80 R15: ffff8801c7c8fb20
FS:  00007f877635e700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfffffffffe CR3: 00000001d4862000 CR4: 00000000001406f0
Call Trace:
 ptm_open_peer+0x11a/0x2f0 drivers/tty/pty.c:632
 tty_ioctl+0x50f/0x15f0 drivers/tty/tty_io.c:2622
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0x1b1/0x1530 fs/ioctl.c:686
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452a39
RSP: 002b:00007f877635dc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452a39
RDX: 0000000000000003 RSI: 0000000000005441 RDI: 0000000000000017
RBP: 0000000000000615 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f7298
R13: 00000000ffffffff R14: 00007f877635e6d4 R15: 0000000000000000
Code: c1 ea 03 80 3c 02 00 0f 85 56 01 00 00 48 8b 5d 90 e8 e0 bd 9d ff 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 24 01 00 00 4c 8b 7b 08 48 b8 00 00 00 00 00 
RIP: devpts_mntget+0x135/0x280 fs/devpts/inode.c:173 RSP: ffff8801c7c8fa50
CR2: fffffbfffffffffe
---[ end trace 58e37c6a40b9c2c5 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
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Kernel Offset: disabled
Rebooting in 86400 seconds..