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: 0 PID: 17659 Comm: syz-executor5 Not tainted 4.14.0-rc5-next-20171018+ #36
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801c7ce4680 task.stack: ffff8801c2c90000
RIP: 0010:__list_add_valid+0x46/0xd0 lib/list_debug.c:26
RSP: 0018:ffff8801c2c97428 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff8801cfd37580 RCX: ffffffff81805304
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801cfd37588
RBP: ffff8801c2c97440 R08: 0000000000000001 R09: 1ffff10038592dea
R10: 00000000f2999b78 R11: 0000000046c66046 R12: ffff8801d77d0980
R13: ffff8801ce286400 R14: ffff8801cfd37580 R15: 0000000000000000
FS:  00007f63c79fc700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020eb1000 CR3: 00000001c7d8f000 CR4: 00000000001426f0
Call Trace:
 __list_add include/linux/list.h:59 [inline]
 list_add_tail include/linux/list.h:92 [inline]
 sock_map_ctx_update_elem.isra.12+0x9e9/0x1a00 kernel/bpf/sockmap.c:768
 sock_map_update_elem+0x145/0x2d0 kernel/bpf/sockmap.c:843
 map_update_elem kernel/bpf/syscall.c:620 [inline]
 SYSC_bpf kernel/bpf/syscall.c:1577 [inline]
 SyS_bpf+0xfa4/0x4090 kernel/bpf/syscall.c:1552
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x452719
RSP: 002b:00007f63c79fbbe8 EFLAGS: 00000212 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452719
RDX: 0000000000000020 RSI: 0000000020edcfe0 RDI: 0000000000000002
RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006ee5f8
R13: 00000000ffffffff R14: 00007f63c79fc6d4 R15: 0000000000000000
Code: 48 89 fa 48 83 ec 08 48 c1 ea 03 80 3c 02 00 75 7c 48 8b 53 08 48 39 f2 75 37 48 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 75 6e 48 8b 16 48 39 da 75 29 49 39 f4 74 38 49 39 
RIP: __list_add_valid+0x46/0xd0 lib/list_debug.c:26 RSP: ffff8801c2c97428
---[ end trace 56718c92d2218e53 ]---
Kernel panic - not syncing: Fatal exception in interrupt
Dumping ftrace buffer:
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Kernel Offset: disabled
Rebooting in 86400 seconds..