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: 24756 Comm: syz-executor4 Not tainted 4.16.0-rc4+ #266
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:get_work_pool+0x147/0x1e0 kernel/workqueue.c:718
RSP: 0018:ffff8801ad0bef58 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000001ffffffe00 RCX: ffffffff8147eec6
RDX: 00000003ffffffc0 RSI: ffffc90002936000 RDI: ffffffff86ec9920
RBP: ffff8801ad0befd8 R08: 0000000000000000 R09: 1ffff10035a17dbd
R10: ffff8801ad0befe8 R11: 0000000000000001 R12: 1ffff10035a17deb
R13: 1ffff10035a17def R14: ffff8801ad0befb8 R15: ffff8801dac147c0
FS:  00007f640952c700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000380 CR3: 00000001cdf9e002 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __queue_work+0x28b/0x1230 kernel/workqueue.c:1403
 queue_work_on+0x16a/0x1c0 kernel/workqueue.c:1488
 queue_work include/linux/workqueue.h:489 [inline]
 schedule_work include/linux/workqueue.h:547 [inline]
 xfrm_policy_insert+0xc7f/0x1140 net/xfrm/xfrm_policy.c:795
 xfrm_add_policy+0x3dc/0x8a0 net/xfrm/xfrm_user.c:1605
 xfrm_user_rcv_msg+0x41c/0x860 net/xfrm/xfrm_user.c:2595
 netlink_rcv_skb+0x14b/0x380 net/netlink/af_netlink.c:2444
 xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2603
 netlink_unicast_kernel net/netlink/af_netlink.c:1308 [inline]
 netlink_unicast+0x4c4/0x6b0 net/netlink/af_netlink.c:1334
 netlink_sendmsg+0xa4a/0xe60 net/netlink/af_netlink.c:1897
 sock_sendmsg_nosec net/socket.c:629 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:639
 ___sys_sendmsg+0x767/0x8b0 net/socket.c:2047
 __sys_sendmsg+0xe5/0x210 net/socket.c:2081
 SYSC_sendmsg net/socket.c:2092 [inline]
 SyS_sendmsg+0x2d/0x50 net/socket.c:2088
 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x453e69
RSP: 002b:00007f640952bc68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f640952c6d4 RCX: 0000000000453e69
RDX: 0000000004000000 RSI: 0000000020000380 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000004c7 R14: 00000000006f7348 R15: 0000000000000000
Code: 00 48 83 c4 60 5b 41 5c 41 5d 41 5e 5d c3 48 81 e3 00 fe ff ff e8 1a 1b 29 00 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 75 7f 48 8b 1b eb a8 e8 f9 1a 29 00 e8 f4 53 15 00 
RIP: get_work_pool+0x147/0x1e0 kernel/workqueue.c:718 RSP: ffff8801ad0bef58
---[ end trace e403ad8e35f2c3f2 ]---