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BUG: KMSAN: uninit-value in __ipv6_chk_addr_and_flags+0x318/0xa80 net/ipv6/addrconf.c:1928
 __ipv6_chk_addr_and_flags+0x318/0xa80 net/ipv6/addrconf.c:1928
 ipv6_chk_addr_and_flags+0x53/0xa0 net/ipv6/addrconf.c:1957
 ndisc_solicit+0x182/0x830 net/ipv6/ndisc.c:742
 neigh_probe net/core/neighbour.c:1083 [inline]
 __neigh_event_send+0x16b9/0x1b80 net/core/neighbour.c:1250
 neigh_event_send_probe include/net/neighbour.h:470 [inline]
 neigh_event_send include/net/neighbour.h:476 [inline]
 neigh_resolve_output+0x276/0xa00 net/core/neighbour.c:1555
 neigh_output include/net/neighbour.h:546 [inline]
 ip_finish_output2+0x182e/0x1a50 net/ipv4/ip_output.c:228
 __ip_finish_output+0x266/0x720
 ip_finish_output+0x3d1/0x400 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:291 [inline]
 ip_output+0x258/0x510 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:444 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 ip_send_skb net/ipv4/ip_output.c:1586 [inline]
 ip_push_pending_frames+0x1d8/0x410 net/ipv4/ip_output.c:1606
 raw_sendmsg+0x2412/0x2700 net/ipv4/raw.c:645
 inet_sendmsg+0x101/0x180 net/ipv4/af_inet.c:827
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 __sys_sendto+0x7f2/0xa60 net/socket.c:2117
 __do_sys_sendto net/socket.c:2129 [inline]
 __se_sys_sendto net/socket.c:2125 [inline]
 __x64_sys_sendto+0x121/0x1c0 net/socket.c:2125
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Uninit was created at:
 slab_post_alloc_hook mm/slab.h:766 [inline]
 slab_alloc_node mm/slub.c:3452 [inline]
 __kmem_cache_alloc_node+0x71f/0xce0 mm/slub.c:3491
 __do_kmalloc_node mm/slab_common.c:967 [inline]
 __kmalloc_node_track_caller+0x114/0x3b0 mm/slab_common.c:988
 kmalloc_reserve net/core/skbuff.c:492 [inline]
 __alloc_skb+0x3af/0x8f0 net/core/skbuff.c:565
 alloc_skb include/linux/skbuff.h:1270 [inline]
 __ip_append_data+0x457a/0x63c0 net/ipv4/ip_output.c:1126
 ip_append_data+0x1eb/0x260 net/ipv4/ip_output.c:1343
 raw_sendmsg+0x2326/0x2700 net/ipv4/raw.c:639
 inet_sendmsg+0x101/0x180 net/ipv4/af_inet.c:827
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 __sys_sendto+0x7f2/0xa60 net/socket.c:2117
 __do_sys_sendto net/socket.c:2129 [inline]
 __se_sys_sendto net/socket.c:2125 [inline]
 __x64_sys_sendto+0x121/0x1c0 net/socket.c:2125
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

CPU: 1 PID: 24496 Comm: syz-executor.0 Tainted: G        W          6.2.0-rc6-syzkaller-80422-geda666ff2276 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
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