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BUG: KMSAN: uninit-value in hsr_register_frame_in+0x12a/0x200 net/hsr/hsr_framereg.c:338
CPU: 1 PID: 13920 Comm: syz-executor.3 Not tainted 5.7.0-rc4-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+0x1c9/0x220 lib/dump_stack.c:118
 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:121
 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215
 hsr_register_frame_in+0x12a/0x200 net/hsr/hsr_framereg.c:338
 hsr_forward_skb+0xd14/0x30d0 net/hsr/hsr_forward.c:360
 hsr_dev_xmit+0x133/0x230 net/hsr/hsr_device.c:223
 __netdev_start_xmit include/linux/netdevice.h:4533 [inline]
 netdev_start_xmit include/linux/netdevice.h:4547 [inline]
 dev_direct_xmit+0x841/0xb30 net/core/dev.c:4118
 packet_direct_xmit+0x289/0x470 net/packet/af_packet.c:240
 packet_snd net/packet/af_packet.c:2979 [inline]
 packet_sendmsg+0x8347/0x93b0 net/packet/af_packet.c:3004
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg net/socket.c:672 [inline]
 __sys_sendto+0xc1b/0xc50 net/socket.c:2000
 __do_sys_sendto net/socket.c:2012 [inline]
 __se_sys_sendto+0x107/0x130 net/socket.c:2008
 __x64_sys_sendto+0x6e/0x90 net/socket.c:2008
 do_syscall_64+0xb8/0x160 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45cba9
Code: 8d b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 5b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f605da68c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000503b00 RCX: 000000000045cba9
RDX: 000000000000000e RSI: 0000000020000000 RDI: 0000000000000003
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000a78 R14: 00000000004cd52e R15: 00007f605da696d4

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:144 [inline]
 kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:310
 __msan_chain_origin+0x50/0x90 mm/kmsan/kmsan_instr.c:165
 hsr_add_node+0xa78/0xc00 net/hsr/hsr_framereg.c:155
 hsr_get_node+0x636/0x6f0 net/hsr/hsr_framereg.c:214
 hsr_fill_frame_info net/hsr/hsr_forward.c:315 [inline]
 hsr_forward_skb+0x780/0x30d0 net/hsr/hsr_forward.c:358
 hsr_dev_xmit+0x133/0x230 net/hsr/hsr_device.c:223
 __netdev_start_xmit include/linux/netdevice.h:4533 [inline]
 netdev_start_xmit include/linux/netdevice.h:4547 [inline]
 dev_direct_xmit+0x841/0xb30 net/core/dev.c:4118
 packet_direct_xmit+0x289/0x470 net/packet/af_packet.c:240
 packet_snd net/packet/af_packet.c:2979 [inline]
 packet_sendmsg+0x8347/0x93b0 net/packet/af_packet.c:3004
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg net/socket.c:672 [inline]
 __sys_sendto+0xc1b/0xc50 net/socket.c:2000
 __do_sys_sendto net/socket.c:2012 [inline]
 __se_sys_sendto+0x107/0x130 net/socket.c:2008
 __x64_sys_sendto+0x6e/0x90 net/socket.c:2008
 do_syscall_64+0xb8/0x160 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Uninit was created at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:144 [inline]
 kmsan_internal_poison_shadow+0x66/0xd0 mm/kmsan/kmsan.c:127
 kmsan_slab_alloc+0x8a/0xe0 mm/kmsan/kmsan_hooks.c:80
 slab_alloc_node mm/slub.c:2802 [inline]
 __kmalloc_node_track_caller+0xb40/0x1200 mm/slub.c:4436
 __kmalloc_reserve net/core/skbuff.c:142 [inline]
 __alloc_skb+0x2fd/0xac0 net/core/skbuff.c:210
 alloc_skb include/linux/skbuff.h:1083 [inline]
 alloc_skb_with_frags+0x18c/0xa70 net/core/skbuff.c:5772
 sock_alloc_send_pskb+0xada/0xc60 net/core/sock.c:2265
 packet_alloc_skb net/packet/af_packet.c:2827 [inline]
 packet_snd net/packet/af_packet.c:2922 [inline]
 packet_sendmsg+0x66a0/0x93b0 net/packet/af_packet.c:3004
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg net/socket.c:672 [inline]
 __sys_sendto+0xc1b/0xc50 net/socket.c:2000
 __do_sys_sendto net/socket.c:2012 [inline]
 __se_sys_sendto+0x107/0x130 net/socket.c:2008
 __x64_sys_sendto+0x6e/0x90 net/socket.c:2008
 do_syscall_64+0xb8/0x160 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
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