kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 29992 Comm: syz-executor.1 Not tainted 4.14.227-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88808fc3c340 task.stack: ffff88809ce90000
RIP: 0010:nla_get_u16 include/net/netlink.h:1100 [inline]
RIP: 0010:nla_get_shortaddr net/ieee802154/nl-mac.c:56 [inline]
RIP: 0010:ieee802154_llsec_parse_key_id+0x15f/0x820 net/ieee802154/nl-mac.c:567
RSP: 0018:ffff88809ce97688 EFLAGS: 00010247
RAX: dffffc0000000000 RBX: ffff88809ce97720 RCX: ffffc900074fe000
RDX: 0000000000000000 RSI: ffffffff86d8ee6a RDI: 0000000000000004
RBP: ffff88809ce97850 R08: 0000000000000001 R09: ffff88809ce97720
R10: ffff88809ce97737 R11: ffff88808fc3c340 R12: 1ffff110139d2ed1
R13: 0000000000000000 R14: ffff88823a5e7340 R15: ffffffff89ec2db8
FS:  00007f8d908b0700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000045 CR3: 000000009e7f7000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 llsec_remove_key net/ieee802154/nl-mac.c:904 [inline]
 ieee802154_nl_llsec_change net/ieee802154/nl-mac.c:832 [inline]
 ieee802154_llsec_del_key+0xf5/0x210 net/ieee802154/nl-mac.c:912
 genl_family_rcv_msg+0x572/0xb20 net/netlink/genetlink.c:600
 genl_rcv_msg+0xaf/0x140 net/netlink/genetlink.c:625
 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
 netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
 __sys_sendmsg+0xa3/0x120 net/socket.c:2096
 SYSC_sendmsg net/socket.c:2107 [inline]
 SyS_sendmsg+0x27/0x40 net/socket.c:2103
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x466459
RSP: 002b:00007f8d908b0188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459
RDX: 0000000004000000 RSI: 0000000020000200 RDI: 0000000000000004
RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffc1038e95f R14: 00007f8d908b0300 R15: 0000000000022000
Code: 97 05 00 00 4d 8b 6e 30 4d 85 ed 0f 84 ce 04 00 00 e8 66 35 7c fa 49 8d 7d 04 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 
RIP: nla_get_u16 include/net/netlink.h:1100 [inline] RSP: ffff88809ce97688
RIP: nla_get_shortaddr net/ieee802154/nl-mac.c:56 [inline] RSP: ffff88809ce97688
RIP: ieee802154_llsec_parse_key_id+0x15f/0x820 net/ieee802154/nl-mac.c:567 RSP: ffff88809ce97688
---[ end trace aaaa7ac41f806c60 ]---