------------[ cut here ]------------
net/hsr/hsr_forward.c:560: Malformed frame (port_src hsr0)
WARNING: CPU: 1 PID: 26260 at net/hsr/hsr_forward.c:559 hsr_forward_skb+0x10b6/0x1840 net/hsr/hsr_forward.c:559
Modules linked in:
CPU: 1 PID: 26260 Comm: syz-executor.0 Not tainted 5.12.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:hsr_forward_skb+0x10b6/0x1840 net/hsr/hsr_forward.c:559
Code: fa ff ff e8 7c f7 bc f8 4c 89 e1 ba 30 02 00 00 48 c7 c6 20 8d 8f 8a 48 c7 c7 40 8e 8f 8a c6 05 e3 e8 f9 04 01 e8 96 de 0a 00 <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 80 3c 02
RSP: 0018:ffffc90017e078e0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff815c4cf5 RDI: fffff52002fc0f0e
RBP: ffff888012e61dc0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815bda8e R11: 0000000000000000 R12: ffff88806e842000
R13: 1ffff92002fc0f23 R14: ffff88801b403f80 R15: ffff88801b403f90
FS:  00007f7a81c1a700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000052fb10 CR3: 0000000022d14000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 hsr_dev_xmit+0x78/0xd0 net/hsr/hsr_device.c:220
 __netdev_start_xmit include/linux/netdevice.h:4825 [inline]
 netdev_start_xmit include/linux/netdevice.h:4839 [inline]
 __dev_direct_xmit+0x527/0x730 net/core/dev.c:4262
 dev_direct_xmit include/linux/netdevice.h:2873 [inline]
 packet_direct_xmit+0x1a5/0x280 net/packet/af_packet.c:244
 packet_snd net/packet/af_packet.c:3006 [inline]
 packet_sendmsg+0x2405/0x52b0 net/packet/af_packet.c:3031
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:674
 __sys_sendto+0x21c/0x320 net/socket.c:1977
 __do_sys_sendto net/socket.c:1989 [inline]
 __se_sys_sendto net/socket.c:1985 [inline]
 __x64_sys_sendto+0xdd/0x1b0 net/socket.c:1985
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x466459
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7a81c1a188 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00000000004bf9fb R08: 0000000020000800 R09: 0000000000000014
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 0000000000a9fb1f R14: 00007f7a81c1a300 R15: 0000000000022000