BUG: unable to handle kernel NULL pointer dereference at 0000000000000104
IP: qlist_free_all+0x37/0x160 mm/kasan/quarantine.c:163
PGD 1c9eea067 P4D 1c9eea067 PUD 199632067 PMD 0 
Oops: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 3147 Comm: udevd Not tainted 4.14.0-mm1+ #25
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88019901c0c0 task.stack: ffff880199020000
RIP: 0010:qlist_free_all+0x37/0x160 mm/kasan/quarantine.c:163
RSP: 0018:ffff880199027c20 EFLAGS: 00010246
RAX: ffff8801c7019720 RBX: 0000000000000286 RCX: 0000000000000000
RDX: ffffea00071c0640 RSI: ffffffffffffffff RDI: 0000000000000286
RBP: ffff880199027c58 R08: 00000000066429c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8801c7019720 R15: ffffffff85ecb840
FS:  00007f5b797567a0(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000104 CR3: 0000000199631000 CR4: 00000000001426f0
Call Trace:
 quarantine_reduce+0x141/0x170 mm/kasan/quarantine.c:259
 kasan_kmalloc+0xca/0xe0 mm/kasan/kasan.c:536
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:489
 slab_post_alloc_hook mm/slab.h:446 [inline]
 slab_alloc mm/slab.c:3386 [inline]
 kmem_cache_alloc+0x11b/0x760 mm/slab.c:3546
 getname_flags+0xcb/0x580 fs/namei.c:138
 user_path_at_empty+0x2d/0x50 fs/namei.c:2599
 user_path_at include/linux/namei.h:57 [inline]
 do_utimes+0x1f1/0x2b0 fs/utimes.c:152
 SYSC_utimensat fs/utimes.c:184 [inline]
 SyS_utimensat+0x101/0x1a0 fs/utimes.c:168
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x7f5b78e5ea32
RSP: 002b:00007fff7fdd0f68 EFLAGS: 00000206 ORIG_RAX: 0000000000000118
RAX: ffffffffffffffda RBX: 0000000001f9d030 RCX: 00007f5b78e5ea32
RDX: 0000000000000000 RSI: 00007fff7fdd1950 RDI: ffffffffffffff9c
RBP: 0000000000000086 R08: 0000000001fad535 R09: 00007f5b78eb2ff0
R10: 0000000000000100 R11: 0000000000000206 R12: 00000000ffffffff
R13: 0000000000420298 R14: 00007fff7fdcdd62 R15: 000000000000000b
Code: 55 48 89 e5 41 57 41 56 41 55 41 54 49 c7 c7 40 b8 ec 85 53 49 89 f4 48 83 ec 10 48 89 7d c8 4d 85 e4 4d 89 e5 0f 84 c8 00 00 00 <49> 63 95 04 01 00 00 4c 8b 30 48 29 d0 49 83 3f 00 48 89 c6 0f 
RIP: qlist_free_all+0x37/0x160 mm/kasan/quarantine.c:163 RSP: ffff880199027c20
CR2: 0000000000000104
---[ end trace 7fb5ca5baa4d7ab1 ]---