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: 23 Comm: kworker/0:1 Not tainted 4.13.0-next-20170914+ #22
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events bpf_map_free_deferred
task: ffff8801d98e6600 task.stack: ffff8801d98d8000
RIP: 0010:smap_list_remove kernel/bpf/sockmap.c:539 [inline]
RIP: 0010:sock_map_free+0x276/0x870 kernel/bpf/sockmap.c:572
RSP: 0018:ffff8801d98df3e8 EFLAGS: 00010206
RAX: 000000000000004d RBX: ffff8801bfa23480 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff85b38160 RDI: 0000000000000282
RBP: ffff8801d98df510 R08: ffff8801d98ded38 R09: ffff8801d98ded30
R10: ffff8801d98deca8 R11: 1ffff1003b31cf53 R12: 0000000000000001
R13: ffff8801c9ebc200 R14: ffff8801d98df980 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002044aff8 CR3: 0000000199d17000 CR4: 00000000001406f0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 bpf_map_free_deferred+0xac/0xd0 kernel/bpf/syscall.c:209
 process_one_work+0xbfa/0x1bd0 kernel/workqueue.c:2119
 worker_thread+0x223/0x1860 kernel/workqueue.c:2253
 kthread+0x39c/0x470 kernel/kthread.c:231
 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431
Code: 85 00 05 00 00 48 8b 85 28 ff ff ff 48 03 98 90 00 00 00 48 8b 85 20 ff ff ff 48 05 68 02 00 00 48 89 85 30 ff ff ff 48 c1 e8 03 <42> 80 3c 38 00 0f 85 be 04 00 00 48 8b 85 20 ff ff ff 4c 8b a0 
RIP: smap_list_remove kernel/bpf/sockmap.c:539 [inline] RSP: ffff8801d98df3e8
RIP: sock_map_free+0x276/0x870 kernel/bpf/sockmap.c:572 RSP: ffff8801d98df3e8
---[ end trace dd282197ddcc3d97 ]---
Kernel panic - not syncing: Fatal exception in interrupt
Dumping ftrace buffer:
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Kernel Offset: disabled
Rebooting in 86400 seconds..