------------[ cut here ]------------ HSR: No self node WARNING: net/hsr/hsr_framereg.c:39 at hsr_addr_is_self+0x3e8/0x450 net/hsr/hsr_framereg.c:39, CPU#1: syz.1.1672/12168 Modules linked in: CPU: 1 UID: 0 PID: 12168 Comm: syz.1.1672 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:hsr_addr_is_self+0x3e8/0x450 net/hsr/hsr_framereg.c:39 Code: 8d be 47 03 00 00 48 c7 c7 60 a3 27 8d c6 05 42 dc 54 05 01 e8 79 67 79 f6 e9 7e fc ff ff e8 ef df 9d f6 48 8d 3d 38 e9 7d 05 <67> 48 0f b9 3a 45 31 f6 e9 1f fe ff ff e8 96 c2 0b f7 e9 6f fd ff RSP: 0018:ffffc90002fc7088 EFLAGS: 00010283 RAX: 0000000000001154 RBX: 0000000000000000 RCX: ffffc90007939000 RDX: 0000000000080000 RSI: ffffffff8b6ab071 RDI: ffffffff90e899b0 RBP: ffff888026256a42 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000008 R14: 000000000000000e R15: ffff88807cf24e40 FS: 00007f24e8fb66c0(0000) GS:ffff888124483000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f24e8fb5ff8 CR3: 0000000079e1c000 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+0x9a5/0x28b0 net/hsr/hsr_forward.c:739 hsr_dev_xmit+0x213/0x400 net/hsr/hsr_device.c:236 __netdev_start_xmit include/linux/netdevice.h:5368 [inline] netdev_start_xmit include/linux/netdevice.h:5377 [inline] xmit_one net/core/dev.c:3888 [inline] dev_hard_start_xmit+0x128/0x7a0 net/core/dev.c:3904 __dev_queue_xmit+0x1baa/0x4950 net/core/dev.c:4870 dev_queue_xmit include/linux/netdevice.h:3418 [inline] neigh_connected_output+0x3b7/0x5d0 net/core/neighbour.c:1648 neigh_output include/net/neighbour.h:560 [inline] ip_finish_output2+0x851/0x2400 net/ipv4/ip_output.c:237 __ip_finish_output.part.0+0x444/0x6f0 net/ipv4/ip_output.c:315 __ip_finish_output include/linux/skbuff.h:1167 [inline] ip_finish_output net/ipv4/ip_output.c:325 [inline] NF_HOOK_COND include/linux/netfilter.h:307 [inline] ip_mc_output+0x466/0xd70 net/ipv4/ip_output.c:422 dst_output include/net/dst.h:470 [inline] ip_local_out net/ipv4/ip_output.c:131 [inline] ip_send_skb net/ipv4/ip_output.c:1510 [inline] ip_push_pending_frames+0x29e/0x300 net/ipv4/ip_output.c:1530 raw_sendmsg+0x1509/0x3590 net/ipv4/raw.c:659 inet_sendmsg+0x11c/0x140 net/ipv4/af_inet.c:866 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0x98d/0xb70 net/socket.c:2698 ___sys_sendmsg+0x190/0x1e0 net/socket.c:2752 __sys_sendmsg+0x170/0x220 net/socket.c:2784 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f24e819ce59 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:00007f24e8fb6028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f24e8416090 RCX: 00007f24e819ce59 RDX: ffff000000000000 RSI: 0000200000000000 RDI: 0000000000000004 RBP: 00007f24e8232d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f24e8416128 R14: 00007f24e8416090 R15: 00007ffecd0258f8 ---------------- Code disassembly (best guess): 0: 8d be 47 03 00 00 lea 0x347(%rsi),%edi 6: 48 c7 c7 60 a3 27 8d mov $0xffffffff8d27a360,%rdi d: c6 05 42 dc 54 05 01 movb $0x1,0x554dc42(%rip) # 0x554dc56 14: e8 79 67 79 f6 call 0xf6796792 19: e9 7e fc ff ff jmp 0xfffffc9c 1e: e8 ef df 9d f6 call 0xf69de012 23: 48 8d 3d 38 e9 7d 05 lea 0x57de938(%rip),%rdi # 0x57de962 * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 45 31 f6 xor %r14d,%r14d 32: e9 1f fe ff ff jmp 0xfffffe56 37: e8 96 c2 0b f7 call 0xf70bc2d2 3c: e9 .byte 0xe9 3d: 6f outsl %ds:(%rsi),(%dx) 3e: fd std 3f: ff .byte 0xff