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BUG: KASAN: null-ptr-deref in memcpy include/linux/string.h:377 [inline]
BUG: KASAN: null-ptr-deref in ieee802154_devaddr_from_raw include/net/ieee802154_netdev.h:165 [inline]
BUG: KASAN: null-ptr-deref in nla_get_hwaddr net/ieee802154/nl-mac.c:46 [inline]
BUG: KASAN: null-ptr-deref in ieee802154_llsec_parse_key_id+0x4ec/0x8a0 net/ieee802154/nl-mac.c:574
Read of size 8 at addr 0000000000000004 by task syz-executor.5/16494

CPU: 1 PID: 16494 Comm: syz-executor.5 Not tainted 4.19.177-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 kasan_report_error.cold+0x15b/0x1b9 mm/kasan/report.c:352
 kasan_report+0x8f/0xa0 mm/kasan/report.c:412
 memcpy+0x20/0x50 mm/kasan/kasan.c:302
 memcpy include/linux/string.h:377 [inline]
 ieee802154_devaddr_from_raw include/net/ieee802154_netdev.h:165 [inline]
 nla_get_hwaddr net/ieee802154/nl-mac.c:46 [inline]
 ieee802154_llsec_parse_key_id+0x4ec/0x8a0 net/ieee802154/nl-mac.c:574
 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+0x109/0x240 net/ieee802154/nl-mac.c:912
 genl_family_rcv_msg+0x642/0xc40 net/netlink/genetlink.c:602
 genl_rcv_msg+0xbf/0x160 net/netlink/genetlink.c:627
 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:638
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xc3/0x120 net/socket.c:632
 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115
 __sys_sendmsg net/socket.c:2153 [inline]
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x465ef9
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:00007fc64b22f188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465ef9
RDX: 0000000000000800 RSI: 0000000020000200 RDI: 0000000000000005
RBP: 00000000004bcd1c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffc80acedff R14: 00007fc64b22f300 R15: 0000000000022000
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