------------[ cut here ]------------ net/hsr/hsr_forward.c:533: Malformed frame (port_src hsr0) WARNING: CPU: 0 PID: 20240 at net/hsr/hsr_forward.c:532 hsr_forward_skb+0x1019/0x1770 net/hsr/hsr_forward.c:532 Modules linked in: CPU: 0 PID: 20240 Comm: syz-executor.1 Not tainted 5.11.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:hsr_forward_skb+0x1019/0x1770 net/hsr/hsr_forward.c:532 Code: f4 ff ff e8 79 e5 c3 f8 4c 89 e1 ba 15 02 00 00 48 c7 c6 00 81 6d 8a 48 c7 c7 20 82 6d 8a c6 05 f8 9b 40 04 01 e8 34 88 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:ffffc90015dbf8e8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815b6d25 RDI: fffff52002bb7f0f RBP: ffff888021016640 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815afefe R11: 0000000000000000 R12: ffff88805e9b2000 R13: 1ffff92002bb7f23 R14: ffff88802bbac580 R15: ffff88802bbac590 FS: 00007f0073753700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f627000 CR3: 0000000012013000 CR4: 00000000001506f0 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:4763 [inline] netdev_start_xmit include/linux/netdevice.h:4777 [inline] __dev_direct_xmit+0x527/0x730 net/core/dev.c:4220 dev_direct_xmit include/linux/netdevice.h:2842 [inline] packet_direct_xmit+0x1a5/0x280 net/packet/af_packet.c:244 packet_snd net/packet/af_packet.c:3006 [inline] packet_sendmsg+0x2406/0x52a0 net/packet/af_packet.c:3031 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 __sys_sendto+0x21c/0x320 net/socket.c:1975 __do_sys_sendto net/socket.c:1987 [inline] __se_sys_sendto net/socket.c:1983 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:1983 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 Code: 0d b4 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f0073752c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008 RBP: 000000000119bfd8 R08: 0000000020000080 R09: 0000000000000014 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffd7eca56bf R14: 00007f00737539c0 R15: 000000000119bf8c