netlink: 4 bytes leftover after parsing attributes in process `syz-executor3'.
PPPIOCDETACH file->f_count=2
netlink: 4 bytes leftover after parsing attributes in process `syz-executor3'.
BUG: unable to handle kernel paging request at ffffebe000000020
IP: virt_to_head_page include/linux/mm.h:615 [inline]
IP: qlink_to_cache mm/kasan/quarantine.c:127 [inline]
IP: qlist_free_all+0x12b/0x160 mm/kasan/quarantine.c:163
PGD 0 P4D 0 
Oops: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 11197 Comm: syz-executor2 Not tainted 4.16.0-rc4+ #343
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:virt_to_head_page include/linux/mm.h:615 [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:ffff8801b623fb68 EFLAGS: 00010286
RAX: 0000000000000002 RBX: 0000000000000286 RCX: ffffea0000000000
RDX: ffffebe000000000 RSI: ffff8801d38108f8 RDI: 0000000000000286
RBP: ffff8801b623fba0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000002 R15: ffffffff86ec9920
FS:  0000000002714940(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffebe000000020 CR3: 00000001b36e6001 CR4: 00000000001626f0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 quarantine_reduce+0x141/0x170 mm/kasan/quarantine.c:259
 kasan_kmalloc+0xca/0xe0 mm/kasan/kasan.c:537
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:489
 slab_post_alloc_hook mm/slab.h:443 [inline]
 slab_alloc mm/slab.c:3379 [inline]
 kmem_cache_alloc+0x11b/0x760 mm/slab.c:3539
 getname_flags+0xcb/0x580 fs/namei.c:138
 getname+0x19/0x20 fs/namei.c:209
 do_sys_open+0x2e7/0x6d0 fs/open.c:1053
 SYSC_open fs/open.c:1077 [inline]
 SyS_open+0x2d/0x40 fs/open.c:1072
 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x451fd0
RSP: 002b:0000000000a3d9d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00000000000000d3 RCX: 0000000000451fd0
RDX: 000000000000000c RSI: 0000000000090800 RDI: 0000000000a3f830
RBP: 0000000000a3f830 R08: 0000000000000001 R09: 0000000002714940
R10: 0000000000000000 R11: 0000000000000202 R12: 00000000000002f0
R13: 0000000000000000 R14: 0000000000000005 R15: 0000000002714914
Code: 00 00 00 80 48 01 c2 72 44 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:615 [inline] RSP: ffff8801b623fb68
RIP: qlink_to_cache mm/kasan/quarantine.c:127 [inline] RSP: ffff8801b623fb68
RIP: qlist_free_all+0x12b/0x160 mm/kasan/quarantine.c:163 RSP: ffff8801b623fb68
CR2: ffffebe000000020
---[ end trace 298a91de21a5e04b ]---