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: 391 Comm: syz-executor.1 Not tainted 4.14.229-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880968e23c0 task.stack: ffff8880207e0000 RIP: 0010:nla_len include/net/netlink.h:706 [inline] RIP: 0010:nla_parse_nested include/net/netlink.h:765 [inline] RIP: 0010:nl802154_del_llsec_devkey+0x149/0x330 net/ieee802154/nl802154.c:1943 RSP: 0018:ffff8880207e76a0 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff8880b28be080 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff86dae6b3 RDI: ffff8880b28be1a0 RBP: 1ffff110040fced6 R08: 0000000000000001 R09: ffff8880207e7990 R10: ffff8880207e76af R11: ffff8880968e23c0 R12: ffff8882382a3480 R13: ffff8880ac0c8f50 R14: ffffffff886f3930 R15: ffff8880a9432280 FS: 00007fcdb120b700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcf3383c10 CR3: 00000000268c9000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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:00007fcdb120b188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 0000000000000000 RSI: 0000000020000ac0 RDI: 0000000000000004 RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffe88d1efbf R14: 00007fcdb120b300 R15: 0000000000022000 Code: 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ca 01 00 00 48 8b 93 20 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 d1 48 c1 e9 03 <0f> b6 0c 01 48 89 d0 83 e0 07 83 c0 01 38 c8 7c 08 84 c9 0f 85 RIP: nla_len include/net/netlink.h:706 [inline] RSP: ffff8880207e76a0 RIP: nla_parse_nested include/net/netlink.h:765 [inline] RSP: ffff8880207e76a0 RIP: nl802154_del_llsec_devkey+0x149/0x330 net/ieee802154/nl802154.c:1943 RSP: ffff8880207e76a0 ---[ end trace f033532f6bfe57be ]---