------------[ cut here ]------------ net/hsr/hsr_forward.c:560: Malformed frame (port_src hsr0) WARNING: CPU: 0 PID: 12134 at net/hsr/hsr_forward.c:559 hsr_forward_skb+0x10b6/0x1840 net/hsr/hsr_forward.c:559 Modules linked in: CPU: 0 PID: 12134 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+0x10b6/0x1840 net/hsr/hsr_forward.c:559 Code: fa ff ff e8 cc f5 bd f8 4c 89 e1 ba 30 02 00 00 48 c7 c6 20 7a 8e 8a 48 c7 c7 40 7b 8e 8a c6 05 24 fe fb 04 01 e8 6c f7 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:ffffc900016cf8e0 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815b4c85 RDI: fffff520002d9f0e RBP: ffff8880775b7b40 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815ade9e R11: 0000000000000000 R12: ffff888062bc8000 R13: 1ffff920002d9f23 R14: ffff888026623780 R15: ffff888026623790 FS: 00007f60ccaac700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000052f930 CR3: 0000000070267000 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:4793 [inline] netdev_start_xmit include/linux/netdevice.h:4807 [inline] __dev_direct_xmit+0x527/0x730 net/core/dev.c:4250 dev_direct_xmit include/linux/netdevice.h:2839 [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: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+0x44/0xae RIP: 0033:0x465f69 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:00007f60ccaac188 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465f69 RDX: 000000000000000e RSI: 0000000020000380 RDI: 0000000000000003 RBP: 00000000004bfa67 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007fffc389ef6f R14: 00007f60ccaac300 R15: 0000000000022000