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: 0 PID: 16997 Comm: syz-executor.2 Not tainted 4.14.224-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880991544c0 task.stack: ffff888097600000 RIP: 0010:nla_get_le64 include/net/netlink.h:1162 [inline] RIP: 0010:ieee802154_llsec_parse_dev_addr+0x1dc/0x320 net/ieee802154/nl802154.c:1326 RSP: 0018:ffff888097607538 EFLAGS: 00010247 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90008908000 RDX: 0000000000000000 RSI: ffffffff86d98dd2 RDI: 0000000000000004 RBP: ffff888097607730 R08: 0000000000000001 R09: ffff888097607568 R10: ffff888097607597 R11: ffff8880991544c0 R12: 1ffff11012ec0ea7 R13: 0000000000000000 R14: ffff8880a4a738a8 R15: ffff8880a4a738a0 FS: 00007fe2c6280700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000056c000 CR3: 000000009ab16000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee802154_llsec_parse_key_id+0x2f4/0x3a0 net/ieee802154/nl802154.c:1362 nl802154_add_llsec_devkey+0x1da/0x380 net/ieee802154/nl802154.c:1921 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: 0033:0x465f69 RSP: 002b:00007fe2c6280188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465f69 RDX: 0000000000000000 RSI: 0000000020000580 RDI: 0000000000000004 RBP: 00000000004bfa3f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffd85c8640f R14: 00007fe2c6280300 R15: 0000000000022000 Code: 00 0f 84 a3 00 00 00 80 fb 03 75 63 e8 5e 93 7b fa 48 8b 5c 24 50 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 04 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 19 01 00 00 48 8d 7d 08 48 8b 5b 04 48 b8 00 RIP: nla_get_le64 include/net/netlink.h:1162 [inline] RSP: ffff888097607538 RIP: ieee802154_llsec_parse_dev_addr+0x1dc/0x320 net/ieee802154/nl802154.c:1326 RSP: ffff888097607538 ---[ end trace e14de7760eab838d ]---