================================================================== BUG: KASAN: null-ptr-deref in memcpy include/linux/fortify-string.h:191 [inline] BUG: KASAN: null-ptr-deref in ieee802154_devaddr_from_raw include/net/ieee802154_netdev.h:157 [inline] BUG: KASAN: null-ptr-deref in nla_get_hwaddr net/ieee802154/nl-mac.c:38 [inline] BUG: KASAN: null-ptr-deref in ieee802154_llsec_parse_key_id+0x4ec/0x8a0 net/ieee802154/nl-mac.c:566 Read of size 8 at addr 0000000000000004 by task syz-executor.2/12912 CPU: 1 PID: 12912 Comm: syz-executor.2 Not tainted 5.12.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x141/0x1d7 lib/dump_stack.c:120 __kasan_report mm/kasan/report.c:403 [inline] kasan_report.cold+0x5f/0xd8 mm/kasan/report.c:416 check_region_inline mm/kasan/generic.c:180 [inline] kasan_check_range+0x13d/0x180 mm/kasan/generic.c:186 memcpy+0x20/0x60 mm/kasan/shadow.c:65 memcpy include/linux/fortify-string.h:191 [inline] ieee802154_devaddr_from_raw include/net/ieee802154_netdev.h:157 [inline] nla_get_hwaddr net/ieee802154/nl-mac.c:38 [inline] ieee802154_llsec_parse_key_id+0x4ec/0x8a0 net/ieee802154/nl-mac.c:566 llsec_remove_key net/ieee802154/nl-mac.c:896 [inline] ieee802154_nl_llsec_change net/ieee802154/nl-mac.c:824 [inline] ieee802154_llsec_del_key+0x109/0x240 net/ieee802154/nl-mac.c:904 genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:739 genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:800 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2502 genl_rcv+0x24/0x40 net/netlink/genetlink.c:811 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x466459 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa9eb526188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 0000000000000040 RSI: 0000000020000240 RDI: 0000000000000004 RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffedc0263bf R14: 00007fa9eb526300 R15: 0000000000022000 ==================================================================