EXT4-fs (sda1): re-mounted. Opts: 
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 13556 Comm: modprobe Not tainted 4.14.169-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880575fa1c0 task.stack: ffff888053820000
RIP: 0010:do_last fs/namei.c:3269 [inline]
RIP: 0010:path_openat+0x20b/0x3db0 fs/namei.c:3569
RSP: 0018:ffff888053827b28 EFLAGS: 00010247
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0001020304050608
RDX: 0000000000000000 RSI: 1ffff1100a704f56 RDI: 0000000000000004
RBP: ffff888053827c80 R08: ffff8880575fa1c0 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000003 R12: ffff888053827cc0
R13: ffff888053827cc0 R14: ffff888094009880 R15: 0000000000000000
FS:  00007f77006fc700(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3162c000 CR3: 000000009a60c000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_filp_open+0x18e/0x250 fs/namei.c:3603
 do_sys_open+0x2c5/0x430 fs/open.c:1084
 SYSC_open fs/open.c:1102 [inline]
 SyS_open+0x2d/0x40 fs/open.c:1097
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7f7700014120
RSP: 002b:00007ffff479d118 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 000055f303111240 RCX: 00007f7700014120
RDX: 00007ffff479d34c RSI: 0000000000080000 RDI: 00007ffff479d330
RBP: 00007f77004e4300 R08: 0000000000000000 R09: 000055f303111219
R10: 0000000000000000 R11: 0000000000000246 R12: 000055f303109210
R13: 000055f303111210 R14: 000055f303109210 R15: 00007ffff479d330
Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 03 30 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5e 58 48 8d 7b 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 
RIP: do_last fs/namei.c:3269 [inline] RSP: ffff888053827b28
RIP: path_openat+0x20b/0x3db0 fs/namei.c:3569 RSP: ffff888053827b28
---[ end trace 58d71a4bb89bb5ee ]---