From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f78.google.com (mail-oo1-f78.google.com [209.85.161.78]) (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 CC876442384 for ; Fri, 7 Aug 2026 12:56:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.78 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786107413; cv=none; b=dYwovnXM8eQLXyeQtyInRMHbiidajV/xlFc/ykXUHMYxi16y0SPbQpd8t5FQiG1+dzN3QEabVzozV70zOa9Ve9FbEJMGkP9BVpkaO8jf6BNT097YFA9hGOqolVXGarJmSCXAOtXN8sVXvTriMlSbitz2iyY3TlOUEcdgA0IjqzA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786107413; c=relaxed/simple; bh=m4wcpFogvRte2ajlKQZ+6miZYF02DgMmhT7t3oUoyzk=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=GcOg+h4LGvfVOljCqx4jKf4fhGi+MhWSTAjmi7JmxCMvBNFV7B21tZ4Lr/S5/8jbf/5Y6+bj+Q8PfTBWIj5z1v2eMPbIYM9o9GCPBscIHEe11uusk74huvqBx1ZARnvzNbgq3usPs9NEvbLCBA7Z6nGUSumBBsQ29it6IWOrHjA= 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=209.85.161.78 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-oo1-f78.google.com with SMTP id 006d021491bc7-6acaccb8b0cso2469110eaf.0 for ; Fri, 07 Aug 2026 05:56:40 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786107397; x=1786712197; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=JvCYBB3LKnvFqAQaNFPRmpG6G7qYWWsWhEZjZveLrK0=; b=JrIV0qAaJtLDlgducYYGGbs9eoDo9WxibJ+jCznMw8fWj7XZ0OCaatQDFfSevOqPja /lrflLDkor/lzsSKVILDt8DcFdQPmcF2vC2IDGQ8AwnZjhdcq2yDHjrEx5aC+3vsudZh m0Ek6roAryR9xoMTjBHUbgk1beitiSdMGftgBRDpa+3JrfqhtEZd28a2JmDZ+k+tC8c/ OuwWvSNGHrimatyEBdMXx/zDfo4AR4l6mHeCzWQ9golimVYfuNd8AlgTYoSjtbc+Gz5t sLgERxTFx5OuIlx9HTMssl4P6D2/r5GMF9tLvhtuvDDPRX8aoaYWPb20/PjA70pqQYoL Watw== X-Gm-Message-State: AOJu0YzIfw5oxxgJ0Eunn+AaKE0RAdCW20MGpMWrLkY/Sia0P0Q59uBh duMieRSMkBX+Tfo8v6d577yNPLH/b6iTW5IN8Vc+8+HqUp9qTJtPjyP9/miXy+qLFmkLJHApyci 23q4cVkpitLn7F0EpEkU6hxiOO1zND4yrnU+BsAI3u6zXcSH2BkJII3Y/rfxyjg== Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:16a9:b0:6a6:8f31:5a50 with SMTP id 006d021491bc7-6ae96c3c3dfmr10137615eaf.5.1786107397463; Fri, 07 Aug 2026 05:56:37 -0700 (PDT) Date: Fri, 07 Aug 2026 05:56:37 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a75d605.01d0871a.3a0d52.0047.GAE@google.com> Subject: [syzbot] BUG: Address fc00:: on device lo is missing its host route. From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 364465ab19de Merge tag 'v7.2-rc6-smb3-server-fixes' of git.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=108402c6580000 kernel config: https://syzkaller.appspot.com/x/.config?x=acc0a882b963ae23 dashboard link: https://syzkaller.appspot.com/bug?extid=ded267b328e950a7c0c4 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/a16108cc17bc/disk-364465ab.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/06f139add938/vmlinux-364465ab.xz kernel image: https://storage.googleapis.com/syzbot-assets/7d4060230883/bzImage-364465ab.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ded267b328e950a7c0c4@syzkaller.appspotmail.com IPv6: BUG: Address fc00:: on device lo is missing its host route. bond9: (slave ip6gretap1): link status up, enabling it in 0 ms bond9: (slave ip6gretap1): failed to get link speed/duplex bond9: (slave ip6gretap1): link status up, enabling it in 0 ms bond9: (slave ip6gretap1): failed to get link speed/duplex bond9: (slave ip6gretap1): link status up, enabling it in 0 ms bond9: (slave ip6gretap1): failed to get link speed/duplex net_ratelimit: 80 callbacks suppressed bond9: (slave ip6gretap1): link status up, enabling it in 0 ms bond9: (slave ip6gretap1): failed to get link speed/duplex bond9: (slave ip6gretap1): link status up, enabling it in 0 ms bond9: (slave ip6gretap1): failed to get link speed/duplex --- 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