kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 7124 Comm: syz-executor6 Not tainted 4.16.0-rc7+ #280
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:ffff8801ca3dfc08 EFLAGS: 00010203
RAX: 02018801c62ad600 RBX: 0000000000000282 RCX: ffffea0000000000
RDX: 0007f2000718ab40 RSI: ffff8801c476cb38 RDI: 0000000000000282
RBP: ffff8801ca3dfc40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 02018801c62ad600 R15: ffffffff87acabe0
FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000008ce5900
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000008cee1b4 CR3: 00000001d97a8005 CR4: 00000000001606e0
DR0: 0000000020000000 DR1: 0000000020000000 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:3380 [inline]
 kmem_cache_alloc+0x11b/0x760 mm/slab.c:3540
 getname_flags+0xcb/0x580 fs/namei.c:138
 getname fs/namei.c:209 [inline]
 SYSC_unlink fs/namei.c:4088 [inline]
 SyS_unlink+0x19/0x30 fs/namei.c:4086
 do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
 do_fast_syscall_32+0x3ec/0xf9f arch/x86/entry/common.c:392
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f4ec99
RSP: 002b:000000000844da7c EFLAGS: 00000246 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 000000000844db0c RCX: 000000005abd22ae
RDX: 000000000844f7ec RSI: 0000000000000000 RDI: 00000000080cfb45
RBP: 000000000844db0c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
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: ffff8801ca3dfc08
RIP: qlink_to_cache mm/kasan/quarantine.c:127 [inline] RSP: ffff8801ca3dfc08
RIP: qlist_free_all+0x12b/0x160 mm/kasan/quarantine.c:163 RSP: ffff8801ca3dfc08
---[ end trace db46374303b1b5d2 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
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Kernel Offset: disabled
Rebooting in 86400 seconds..