hsr0: VLAN not yet supported
=====================================================
BUG: KMSAN: uninit-value in hsr_fill_frame_info+0x495/0x770 net/hsr/hsr_forward.c:526
 hsr_fill_frame_info+0x495/0x770 net/hsr/hsr_forward.c:526
 fill_frame_info net/hsr/hsr_forward.c:602 [inline]
 hsr_forward_skb+0x793/0x3490 net/hsr/hsr_forward.c:616
 hsr_dev_xmit+0x223/0x390 net/hsr/hsr_device.c:222
 __netdev_start_xmit include/linux/netdevice.h:4685 [inline]
 netdev_start_xmit include/linux/netdevice.h:4699 [inline]
 xmit_one+0x2f4/0x840 net/core/dev.c:3473
 dev_hard_start_xmit+0x186/0x440 net/core/dev.c:3489
 __dev_queue_xmit+0x2123/0x3310 net/core/dev.c:4116
 dev_queue_xmit+0x4b/0x60 net/core/dev.c:4149
 packet_snd net/packet/af_packet.c:3060 [inline]
 packet_sendmsg+0x872e/0x9c50 net/packet/af_packet.c:3087
 sock_sendmsg_nosec net/socket.c:705 [inline]
 sock_sendmsg net/socket.c:725 [inline]
 __sys_sendto+0x9ef/0xc70 net/socket.c:2040
 __do_sys_sendto net/socket.c:2052 [inline]
 __se_sys_sendto net/socket.c:2048 [inline]
 __x64_sys_sendto+0x19c/0x210 net/socket.c:2048
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Uninit was created at:
 slab_post_alloc_hook mm/slab.h:737 [inline]
 slab_alloc_node mm/slub.c:3244 [inline]
 __kmalloc_node_track_caller+0xde3/0x14f0 mm/slub.c:4972
 kmalloc_reserve net/core/skbuff.c:354 [inline]
 __alloc_skb+0x545/0xf90 net/core/skbuff.c:426
 alloc_skb include/linux/skbuff.h:1158 [inline]
 alloc_skb_with_frags+0x1db/0xbc0 net/core/skbuff.c:5956
 sock_alloc_send_pskb+0xdf4/0xfc0 net/core/sock.c:2586
 packet_alloc_skb net/packet/af_packet.c:2908 [inline]
 packet_snd net/packet/af_packet.c:3003 [inline]
 packet_sendmsg+0x68de/0x9c50 net/packet/af_packet.c:3087
 sock_sendmsg_nosec net/socket.c:705 [inline]
 sock_sendmsg net/socket.c:725 [inline]
 __sys_sendto+0x9ef/0xc70 net/socket.c:2040
 __do_sys_sendto net/socket.c:2052 [inline]
 __se_sys_sendto net/socket.c:2048 [inline]
 __x64_sys_sendto+0x19c/0x210 net/socket.c:2048
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x44/0xae

CPU: 0 PID: 11826 Comm: syz-executor.0 Not tainted 5.17.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
=====================================================