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BUG: KMSAN: uninit-value in ax25cmp+0x49a/0x5f0
 ax25cmp+0x49a/0x5f0
 nr_dev_get+0x1cb/0x460
 nr_route_frame+0x243/0x1040
 nr_xmit+0xa0/0x290
 xmit_one+0x2e3/0x830
 dev_hard_start_xmit+0x185/0x410
 __dev_queue_xmit+0x21f5/0x3470
 dev_queue_xmit+0x4f/0x60
 raw_sendmsg+0x85d/0xd90
 ieee802154_sock_sendmsg+0xf0/0x130
 ____sys_sendmsg+0xe14/0x12c0
 ___sys_sendmsg+0x471/0x510
 __sys_sendmmsg+0x6c7/0xb90
 __ia32_compat_sys_sendmmsg+0x12b/0x180
 __do_fast_syscall_32+0x95/0xf0
 do_fast_syscall_32+0x33/0x70
 do_SYSENTER_32+0x1b/0x20
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c

Uninit was created at:
 __kmalloc_node_track_caller+0xdee/0x14e0
 __alloc_skb+0x526/0xf50
 alloc_skb_with_frags+0x1d0/0xd30
 sock_alloc_send_pskb+0xde5/0xfb0
 sock_alloc_send_skb+0xce/0xe0
 raw_sendmsg+0x4f8/0xd90
 ieee802154_sock_sendmsg+0xf0/0x130
 ____sys_sendmsg+0xe14/0x12c0
 ___sys_sendmsg+0x471/0x510
 __sys_sendmmsg+0x6c7/0xb90
 __ia32_compat_sys_sendmmsg+0x12b/0x180
 __do_fast_syscall_32+0x95/0xf0
 do_fast_syscall_32+0x33/0x70
 do_SYSENTER_32+0x1b/0x20
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c

CPU: 1 PID: 16449 Comm: syz-executor.2 Not tainted 5.18.0-syzkaller-16253-g2f3064574275 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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