------------[ cut here ]------------ HSR: No self node WARNING: net/hsr/hsr_framereg.c:39 at hsr_addr_is_self+0x211/0x3f0 net/hsr/hsr_framereg.c:39, CPU#0: syz.4.4726/24802 Modules linked in: CPU: 0 UID: 0 PID: 24802 Comm: syz.4.4726 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:hsr_addr_is_self+0x211/0x3f0 net/hsr/hsr_framereg.c:39 Code: 33 2f 41 0f b7 dd 89 ee 09 de 31 ff e8 d8 f2 3d f6 09 dd 74 54 e8 8f ee 3d f6 31 ed eb 53 e8 86 ee 3d f6 48 8d 3d df e8 ba 04 <67> 48 0f b9 3a 31 ed eb 42 e8 b1 32 1f 00 89 c5 31 ff 89 c6 e8 a6 RSP: 0018:ffffc9000482f0e0 EFLAGS: 00010287 RAX: ffffffff8b87d81a RBX: ffffffff8b87d636 RCX: 0000000000080000 RDX: ffffc9001bd8a000 RSI: 000000000000082d RDI: ffffffff9042c100 RBP: 0000000000000001 R08: ffffffff8b87d636 R09: ffffffff8e95cca0 R10: ffffc9000482f1e8 R11: fffff52000905e3f R12: dffffc0000000000 R13: ffff888033606b40 R14: ffff88802b41b002 R15: 0000000000000000 FS: 00007f1dfb9f66c0(0000) GS:ffff888125298000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1dfb9f5ff8 CR3: 00000000623fa000 CR4: 00000000003526f0 Call Trace: check_local_dest net/hsr/hsr_forward.c:592 [inline] fill_frame_info net/hsr/hsr_forward.c:728 [inline] hsr_forward_skb+0xa11/0x2a80 net/hsr/hsr_forward.c:739 hsr_dev_xmit+0x242/0x360 net/hsr/hsr_device.c:236 __netdev_start_xmit include/linux/netdevice.h:5379 [inline] netdev_start_xmit include/linux/netdevice.h:5388 [inline] xmit_one net/core/dev.c:3888 [inline] dev_hard_start_xmit+0x2cd/0x830 net/core/dev.c:3904 __dev_queue_xmit+0x14d9/0x3950 net/core/dev.c:4871 neigh_output include/net/neighbour.h:560 [inline] ip_finish_output2+0xca9/0x1070 net/ipv4/ip_output.c:237 ip_send_skb net/ipv4/ip_output.c:1510 [inline] ip_push_pending_frames+0x8b/0x110 net/ipv4/ip_output.c:1530 raw_sendmsg+0x1547/0x1a50 net/ipv4/raw.c:659 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0x80a/0x9f0 net/socket.c:2698 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1dfd79ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1dfb9f6028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f1dfda16090 RCX: 00007f1dfd79ce59 RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000004 RBP: 00007f1dfd832d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1dfda16128 R14: 00007f1dfda16090 R15: 00007ffda7cb3e88 ---------------- Code disassembly (best guess): 0: 33 2f xor (%rdi),%ebp 2: 41 0f b7 dd movzwl %r13w,%ebx 6: 89 ee mov %ebp,%esi 8: 09 de or %ebx,%esi a: 31 ff xor %edi,%edi c: e8 d8 f2 3d f6 call 0xf63df2e9 11: 09 dd or %ebx,%ebp 13: 74 54 je 0x69 15: e8 8f ee 3d f6 call 0xf63deea9 1a: 31 ed xor %ebp,%ebp 1c: eb 53 jmp 0x71 1e: e8 86 ee 3d f6 call 0xf63deea9 23: 48 8d 3d df e8 ba 04 lea 0x4bae8df(%rip),%rdi # 0x4bae909 * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 31 ed xor %ebp,%ebp 31: eb 42 jmp 0x75 33: e8 b1 32 1f 00 call 0x1f32e9 38: 89 c5 mov %eax,%ebp 3a: 31 ff xor %edi,%edi 3c: 89 c6 mov %eax,%esi 3e: e8 .byte 0xe8 3f: a6 cmpsb %es:(%rdi),%ds:(%rsi)