From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f80.google.com (mail-ot1-f80.google.com [209.85.210.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C99DF37CD30 for ; Sat, 30 May 2026 06:39:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.80 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780123170; cv=none; b=DSOQfQpUTZ2Lw/eQ1vA9gYnsZ7mfCCpekLcKaMf9AGeYpZELOmvo7tbrWNeJyQMtuzLWM3ih+i7tyK8QL5JBCEH0S69IkRYBDfn+CyGiPe5sBzzhoHRMo85+ZNC8rZvP73OPJei2aUgH4FVnV8M23qUm2nHSkvwkGApjGti/ZTs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780123170; c=relaxed/simple; bh=syTcwifVYKHymnjmk+HLWfK3MgN68nevTT6x7bKVS9w=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=j02shAulzC7LmpZuXCdiOV86klp01G43ELo56pJ/3/SusQSPuldC+xHs56+FyM9MwNBJQsAnVCzrD/sqeJm8bIffKt7cbHCxmbZU1BpP9L+MNu1afVs7HB7+rnKgJdWV0Kdwm+DImXVu7XuGNnvyA8ijW3P3KwzButhYTaJk4sI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.210.80 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-ot1-f80.google.com with SMTP id 46e09a7af769-7dcd7302f00so3578534a34.0 for ; Fri, 29 May 2026 23:39:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1780123166; x=1780727966; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=JAKFsRo+eBSAOxTVyhrdDzSE7ZqUOrRDxhcBURVJ8Xg=; b=GuU5enNLWGTNGBmxy4TF8zU/anWnuuJF/5JZK3B3PtbVyrlpplw27a3NRYvPkG4wd9 sjEdHCjKcpH3pdH+wc1zf7/danDRy6dUJbRAkr/rBvWDc3yCChUpLKbjniKCZ3Rp8ojs by1ngOVcGslPcDRiU9ILC7yZk2ocBT0VSwr90o1ZRrD+Ngli4T1QGVOsswYcz3Ff+EBy 4wzWNI8co/10Rn2gxRg6loksmOvYxvhHaB7eNSL2cD/EaDqacH6k67JhlvxgZIOI/J8+ J7r2hLl2mcru+YHaK2CHN7H5mVMnMgXdYEePDznF3krDPwM263uPAsZ/OK684qDyz1p7 27Tw== X-Forwarded-Encrypted: i=1; AFNElJ8VROUewzcHYatTxmgWSIz5C7v6IK6oj4EjcK+QIMRXHXejynRcYpOUXjpJ2ZYe5ULU55QWCPo=@vger.kernel.org X-Gm-Message-State: AOJu0YztiM3p3mSa7ATOpiFtGPJFrVKsLbEDDQZqhWu2HK1wusBwZo5m fUDOXzbWUNplXnFQQfzrurzFZbYYKueeML75x+axSVfwgybOcN95FUS5sBtSBw75LUIo7BoP7Ak zS4q+MGN64Je2dfIXEQlO3fmodTo4W6fLqGmfKJ7sjpYr1yAbWw2um9rTSdk= Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:20b:b0:69d:e459:2d98 with SMTP id 006d021491bc7-69e103d475fmr1137621eaf.46.1780123166575; Fri, 29 May 2026 23:39:26 -0700 (PDT) Date: Fri, 29 May 2026 23:39:26 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a1a861e.b111c304.35cd64.0016.GAE@google.com> Subject: [syzbot] [net?] WARNING in hsr_addr_is_self From: syzbot To: davem@davemloft.net, edumazet@google.com, horms@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 1d5dcaa3bd65 Merge tag 'probes-fixes-v7.1-rc3' of git://gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=119dae36580000 kernel config: https://syzkaller.appspot.com/x/.config?x=f2e8ebfec4636d32 dashboard link: https://syzkaller.appspot.com/bug?extid=652670cf249077eb498b compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/5b889cdb98bd/disk-1d5dcaa3.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/8953fddf953a/vmlinux-1d5dcaa3.xz kernel image: https://storage.googleapis.com/syzbot-assets/d6e5ef98b3f1/bzImage-1d5dcaa3.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+652670cf249077eb498b@syzkaller.appspotmail.com ------------[ 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.4.16848/17220 Modules linked in: CPU: 0 UID: 0 PID: 17220 Comm: syz.4.16848 Tainted: G L syzkaller #0 PREEMPT_{RT,(full)} Tainted: [L]=SOFTLOCKUP 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 c8 b4 c6 f6 09 dd 74 54 e8 0f b0 c6 f6 31 ed eb 53 e8 06 b0 c6 f6 48 8d 3d 2f 50 9c 04 <67> 48 0f b9 3a 31 ed eb 42 e8 c1 13 1f 00 89 c5 31 ff 89 c6 e8 96 RSP: 0018:ffffc900041c70e0 EFLAGS: 00010283 RAX: ffffffff8afdc6ca RBX: ffffffff8afdc4e6 RCX: 0000000000080000 RDX: ffffc90010493000 RSI: 0000000000000948 RDI: ffffffff8f9a1700 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: ffffc900041c71e8 R11: fffff52000838e3f R12: dffffc0000000000 R13: ffff888041f9e3c0 R14: ffff888086ee3802 R15: 0000000000000000 FS: 00007f6fe985d6c0(0000) GS:ffff888126176000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f80bd437dac CR3: 0000000025096000 CR4: 00000000003526f0 DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000002 DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400 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+0x253/0x370 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+0x2df/0x860 net/core/dev.c:3904 __dev_queue_xmit+0x1428/0x3900 net/core/dev.c:4870 neigh_output include/net/neighbour.h:556 [inline] ip_finish_output2+0xcec/0x10b0 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+0x7da/0x9c0 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+0x1c3/0x2a0 net/socket.c:2787 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6feb62ce59 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:00007f6fe985d028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f6feb8a6090 RCX: 00007f6feb62ce59 RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000004 RBP: 00007f6feb6c2d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6feb8a6128 R14: 00007f6feb8a6090 R15: 00007ffcf01cc488 ---------------- 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 c8 b4 c6 f6 call 0xf6c6b4d9 11: 09 dd or %ebx,%ebp 13: 74 54 je 0x69 15: e8 0f b0 c6 f6 call 0xf6c6b029 1a: 31 ed xor %ebp,%ebp 1c: eb 53 jmp 0x71 1e: e8 06 b0 c6 f6 call 0xf6c6b029 23: 48 8d 3d 2f 50 9c 04 lea 0x49c502f(%rip),%rdi # 0x49c5059 * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 31 ed xor %ebp,%ebp 31: eb 42 jmp 0x75 33: e8 c1 13 1f 00 call 0x1f13f9 38: 89 c5 mov %eax,%ebp 3a: 31 ff xor %edi,%edi 3c: 89 c6 mov %eax,%esi 3e: e8 .byte 0xe8 3f: 96 xchg %eax,%esi --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup