BUG: unable to handle kernel paging request at ffff8802ad38527f
PGD b1a3067 P4D b1a3067 PUD 0 
Oops: 0002 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 9543 Comm: blkid Not tainted 4.17.0-rc2+ #45
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:slab_put_obj mm/slab.c:2625 [inline]
RIP: 0010:free_block+0x155/0x280 mm/slab.c:3418
RSP: 0018:ffff8801929a7ac8 EFLAGS: 00010082
RAX: 0000000000000000 RBX: ffff8801daf34058 RCX: 00000000ffffffff
RDX: ffff8801ad384180 RSI: ffff8801ad385280 RDI: 0000000000000000
RBP: ffff8801929a7b10 R08: 0000000006b4e100 R09: ffff8801da801958
R10: ffffed003b500320 R11: ffff8801da801903 R12: ffffea0006b4e120
R13: ffff8801da800c40 R14: ffff8801da801900 R15: ffffea0006b4e100
FS:  0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8802ad38527f CR3: 00000001ceb6a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 cache_flusharray mm/slab.c:3469 [inline]
 ___cache_free+0x20a/0x2f0 mm/slab.c:3527
 qlink_free mm/kasan/quarantine.c:147 [inline]
 qlist_free_all+0x8c/0x160 mm/kasan/quarantine.c:166
 quarantine_reduce+0x141/0x170 mm/kasan/quarantine.c:259
 kasan_kmalloc+0x99/0xe0 mm/kasan/kasan.c:538
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490
 slab_post_alloc_hook mm/slab.h:444 [inline]
 slab_alloc mm/slab.c:3392 [inline]
 kmem_cache_alloc+0x11b/0x760 mm/slab.c:3552
 getname_flags+0xd0/0x5a0 fs/namei.c:140
 getname+0x19/0x20 fs/namei.c:211
 do_sys_open+0x39a/0x740 fs/open.c:1087
 __do_sys_open fs/open.c:1111 [inline]
 __se_sys_open fs/open.c:1106 [inline]
 __x64_sys_open+0x7e/0xc0 fs/open.c:1106
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f9b196391a7
RSP: 002b:00007ffea5935498 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f9b198414c8 RCX: 00007f9b196391a7
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007f9b1983d629
RBP: 00007ffea5935510 R08: 00007ffea593590f R09: 0000000000000000
R10: 00007f9b1983d629 R11: 0000000000000246 R12: 0000000000000008
R13: 00007f9b19843040 R14: 0000000000000000 R15: 00007ffea593590f
Code: f1 41 0f b6 4d 1c 48 c1 ee 20 29 f0 d3 e8 41 0f b6 4d 1d 01 f0 49 8b 77 10 d3 e8 8d 4f ff 41 89 4f 18 48 85 f6 0f 84 05 01 00 00 <88> 04 0e 41 8b 47 18 85 c0 0f 84 e3 fe ff ff 49 8b 4e 40 4d 8d 
RIP: slab_put_obj mm/slab.c:2625 [inline] RSP: ffff8801929a7ac8
RIP: free_block+0x155/0x280 mm/slab.c:3418 RSP: ffff8801929a7ac8
CR2: ffff8802ad38527f
---[ end trace a75b4576be562334 ]---