------------[ cut here ]------------ net/hsr/hsr_forward.c:560: Malformed frame (port_src hsr0) WARNING: CPU: 0 PID: 19290 at net/hsr/hsr_forward.c:560 hsr_forward_skb+0x14f1/0x18c0 net/hsr/hsr_forward.c:559 Modules linked in: CPU: 0 PID: 19290 Comm: syz-executor.3 Not tainted 5.11.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:hsr_forward_skb+0x14f1/0x18c0 net/hsr/hsr_forward.c:559 Code: 3c 28 00 74 08 48 89 df e8 7c 58 7a f8 48 8b 0b 48 c7 c7 60 2b fc 8a 48 c7 c6 ae 40 7e 8b ba 30 02 00 00 31 c0 e8 5f 10 06 f8 <0f> 0b e9 d2 eb ff ff e8 83 99 36 f8 0f 0b e9 6b ec ff ff 44 89 e1 RSP: 0018:ffffc9000939f960 EFLAGS: 00010246 RAX: ca9fba28b0140c00 RBX: ffff88802c20af90 RCX: 0000000000040000 RDX: ffffc9000f699000 RSI: 00000000000041f3 RDI: 00000000000041f4 RBP: ffff88802c20af80 R08: ffffffff815fa0c2 R09: ffffed1017385fd0 R10: ffffed1017385fd0 R11: 0000000000000000 R12: ffff8880153861f6 R13: dffffc0000000000 R14: 000000000000ffff R15: ffff888015386140 FS: 00007fd2773f5700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32a21000 CR3: 0000000025ab7000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hsr_dev_xmit+0x7d/0xc0 net/hsr/hsr_device.c:220 __netdev_start_xmit include/linux/netdevice.h:4793 [inline] netdev_start_xmit include/linux/netdevice.h:4807 [inline] __dev_direct_xmit+0x49b/0x700 net/core/dev.c:4250 dev_direct_xmit include/linux/netdevice.h:2839 [inline] packet_direct_xmit+0x163/0x290 net/packet/af_packet.c:244 packet_snd net/packet/af_packet.c:3006 [inline] packet_sendmsg+0x4cd8/0x6650 net/packet/af_packet.c:3031 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg net/socket.c:672 [inline] __sys_sendto+0x438/0x5c0 net/socket.c:1975 __do_sys_sendto net/socket.c:1987 [inline] __se_sys_sendto net/socket.c:1983 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:1983 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x465ef9 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:00007fd2773f5188 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465ef9 RDX: 000000000000001f RSI: 0000000020000480 RDI: 0000000000000004 RBP: 00000000004bcd1c R08: 0000000020000340 R09: 0000000000000014 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffdf12232cf R14: 00007fd2773f5300 R15: 0000000000022000