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: 24785 Comm: syz-executor6 Not tainted 4.16.0+ #293
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:sk_user_ns include/net/sock.h:748 [inline]
RIP: 0010:tipc_sk_fill_sock_diag+0x42d/0xc20 net/tipc/socket.c:3282
RSP: 0018:ffff8801abc1eff0 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 1ffff10035783e04 RCX: 000000000000002b
RDX: dffffc0000000000 RSI: 1ffff100357af947 RDI: 0000000000000158
RBP: ffff8801abc1f2a8 R08: 1ffff10035783dbf R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801ce3cb180
R13: ffff8801af7a0480 R14: ffff8801abc1f280 R15: 0000000000000000
FS:  00007f9380379700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000002488fd0 CR3: 00000001d7f2a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __tipc_add_sock_diag+0x20e/0x330 net/tipc/diag.c:62
 tipc_nl_sk_walk+0x565/0xb60 net/tipc/socket.c:3240
 tipc_diag_dump+0x24/0x30 net/tipc/diag.c:73
 netlink_dump+0x4a4/0xd00 net/netlink/af_netlink.c:2224
 __netlink_dump_start+0x4ec/0x710 net/netlink/af_netlink.c:2321
 netlink_dump_start include/linux/netlink.h:214 [inline]
 tipc_sock_diag_handler_dump+0x206/0x2c0 net/tipc/diag.c:89
 __sock_diag_cmd net/core/sock_diag.c:230 [inline]
 sock_diag_rcv_msg+0x204/0x360 net/core/sock_diag.c:261
 netlink_rcv_skb+0x14b/0x380 net/netlink/af_netlink.c:2446
 sock_diag_rcv+0x2a/0x40 net/core/sock_diag.c:272
 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline]
 netlink_unicast+0x4c4/0x6b0 net/netlink/af_netlink.c:1336
 netlink_sendmsg+0xa5e/0xe90 net/netlink/af_netlink.c:1899
 sock_sendmsg_nosec net/socket.c:629 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:639
 ___sys_sendmsg+0x767/0x8b0 net/socket.c:2117
 __sys_sendmsg+0x105/0x250 net/socket.c:2155
 SYSC_sendmsg net/socket.c:2164 [inline]
 SyS_sendmsg+0x29/0x30 net/socket.c:2162
 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x4552d9
RSP: 002b:00007f9380378c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f93803796d4 RCX: 00000000004552d9
RDX: 0000000000000000 RSI: 0000000020005000 RDI: 0000000000000013
RBP: 000000000072bf58 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000004ea R14: 00000000006fa690 R15: 0000000000000001
Code: f9 48 c1 e9 03 80 3c 11 00 0f 85 d5 07 00 00 4d 8b 7f 18 48 ba 00 00 00 00 00 fc ff df 49 8d bf 58 01 00 00 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 4b 07 00 00 4d 8b bf 58 01 00 00 48 ba 00 00 
RIP: sk_user_ns include/net/sock.h:748 [inline] RSP: ffff8801abc1eff0
RIP: tipc_sk_fill_sock_diag+0x42d/0xc20 net/tipc/socket.c:3282 RSP: ffff8801abc1eff0
---[ end trace 110838f0d4875159 ]---