BUG: unable to handle kernel paging request at ffffebe004000020
PGD 0 P4D 0 
Oops: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 6988 Comm: udevd Not tainted 4.17.0-rc2+ #19
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:virt_to_head_page include/linux/mm.h:624 [inline]
RIP: 0010:qlink_to_cache mm/kasan/quarantine.c:127 [inline]
RIP: 0010:qlist_free_all+0x12b/0x160 mm/kasan/quarantine.c:163
RSP: 0018:ffff880193a870b8 EFLAGS: 00010286
RAX: 0000000100000001 RBX: 0000000000000286 RCX: ffffea0000000000
RDX: ffffebe004000000 RSI: ffff8801d6858a08 RDI: 0000000000000286
RBP: ffff880193a870f0 R08: ffff8801d68589b8 R09: 0000000000000006
R10: ffff8801d6858180 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000100000001 R15: ffffffff88d18ae0
FS:  00007fbd833d67a0(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffebe004000020 CR3: 00000001b259b000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 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
 anon_vma_chain_alloc mm/rmap.c:128 [inline]
 __anon_vma_prepare+0xbc/0x700 mm/rmap.c:182
 anon_vma_prepare include/linux/rmap.h:153 [inline]
 do_anonymous_page mm/memory.c:3153 [inline]
 handle_pte_fault mm/memory.c:3961 [inline]
 __handle_mm_fault+0x3426/0x4310 mm/memory.c:4087
 handle_mm_fault+0x53a/0xc70 mm/memory.c:4124
 __do_page_fault+0x60b/0xe40 arch/x86/mm/fault.c:1399
 do_page_fault+0xee/0x8a7 arch/x86/mm/fault.c:1474
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1160
RIP: 0010:copy_user_generic_unrolled+0x89/0xc0 arch/x86/lib/copy_user_64.S:66
RSP: 0018:ffff880193a878f8 EFLAGS: 00010206
RAX: ffffed00322cd04e RBX: 000000000000002b RCX: 0000000000000005
RDX: 0000000000000003 RSI: ffff880191668240 RDI: 00007fbd833dd000
RBP: ffff880193a87930 R08: 0a373d524f4a414d R09: ffffed00322cd048
R10: ffffed00322cd04d R11: ffff88019166826a R12: 00007fbd833dd02b
R13: 00007fbd833dd000 R14: ffff880191668240 R15: 00007ffffffff000
 copy_to_user include/linux/uaccess.h:155 [inline]
 seq_read+0xd90/0x1520 fs/seq_file.c:285
 kernfs_fop_read+0x13e/0x690 fs/kernfs/file.c:252
 __vfs_read+0x10f/0xa50 fs/read_write.c:416
 vfs_read+0x17f/0x3d0 fs/read_write.c:452
 ksys_read+0xf9/0x250 fs/read_write.c:578
 __do_sys_read fs/read_write.c:588 [inline]
 __se_sys_read fs/read_write.c:586 [inline]
 __x64_sys_read+0x73/0xb0 fs/read_write.c:586
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fbd82ade310
RSP: 002b:00007fff4d767488 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000a1f3b0 RCX: 00007fbd82ade310
RDX: 0000000000001000 RSI: 00007fbd833dd000 RDI: 0000000000000005
RBP: 0000000000003fff R08: 00000000ffffffff R09: 0000000000000000
R10: 0000000000000022 R11: 0000000000000246 R12: 000000000000000a
R13: 0000000000000000 R14: 0000000000000000 R15: 00007fff4d767960
Code: 00 00 00 80 48 01 c2 72 43 48 b9 00 00 00 80 ff 77 00 00 48 01 ca 48 b9 00 00 00 00 00 ea ff ff 48 c1 ea 0c 48 c1 e2 06 48 01 ca <48> 8b 4a 20 48 8d 71 ff 83 e1 01 48 0f 45 d6 4c 8b 6a 30 e9 f4 
RIP: virt_to_head_page include/linux/mm.h:624 [inline] RSP: ffff880193a870b8
RIP: qlink_to_cache mm/kasan/quarantine.c:127 [inline] RSP: ffff880193a870b8
RIP: qlist_free_all+0x12b/0x160 mm/kasan/quarantine.c:163 RSP: ffff880193a870b8
CR2: ffffebe004000020
---[ end trace e5687772cef20c82 ]---