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BUG: KMSAN: uninit-value in skb_zcopy_clear include/linux/skbuff.h:1875 [inline]
BUG: KMSAN: uninit-value in skb_release_data+0x473/0x1130 net/core/skbuff.c:669
 skb_zcopy_clear include/linux/skbuff.h:1875 [inline]
 skb_release_data+0x473/0x1130 net/core/skbuff.c:669
 skb_release_all net/core/skbuff.c:742 [inline]
 __kfree_skb+0x62/0x240 net/core/skbuff.c:756
 kfree_skb_reason+0xa3/0x2a0 net/core/skbuff.c:778
 kfree_skb include/linux/skbuff.h:1375 [inline]
 packet_snd net/packet/af_packet.c:3086 [inline]
 packet_sendmsg+0x588d/0x7830 net/packet/af_packet.c:3104
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 ____sys_sendmsg+0xabc/0xe90 net/socket.c:2492
 ___sys_sendmsg+0x2a5/0x350 net/socket.c:2546
 __sys_sendmsg net/socket.c:2575 [inline]
 __do_sys_sendmsg net/socket.c:2584 [inline]
 __se_sys_sendmsg net/socket.c:2582 [inline]
 __x64_sys_sendmsg+0x367/0x540 net/socket.c:2582
 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+0x46/0xb0

Uninit was created at:
 slab_post_alloc_hook mm/slab.h:755 [inline]
 slab_alloc_node mm/slub.c:3258 [inline]
 __kmalloc_node_track_caller+0x86c/0x1230 mm/slub.c:4995
 kmalloc_reserve net/core/skbuff.c:354 [inline]
 __alloc_skb+0x34a/0xd70 net/core/skbuff.c:426
 alloc_skb include/linux/skbuff.h:1426 [inline]
 alloc_skb_with_frags+0xb9/0xb80 net/core/skbuff.c:5992
 sock_alloc_send_pskb+0xaa8/0xc30 net/core/sock.c:2662
 packet_alloc_skb net/packet/af_packet.c:2921 [inline]
 packet_snd net/packet/af_packet.c:3016 [inline]
 packet_sendmsg+0x4c78/0x7830 net/packet/af_packet.c:3104
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 ____sys_sendmsg+0xabc/0xe90 net/socket.c:2492
 ___sys_sendmsg+0x2a5/0x350 net/socket.c:2546
 __sys_sendmsg net/socket.c:2575 [inline]
 __do_sys_sendmsg net/socket.c:2584 [inline]
 __se_sys_sendmsg net/socket.c:2582 [inline]
 __x64_sys_sendmsg+0x367/0x540 net/socket.c:2582
 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+0x46/0xb0

CPU: 0 PID: 16567 Comm: syz-executor.1 Not tainted 5.19.0-rc4-syzkaller-31333-g97117d69c353 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
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