From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oa2-f1.google.com (mail-oa2-f1.google.com [74.125.231.65]) (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 A09962857CC for ; Sun, 23 Aug 2026 15:56:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.231.65 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787500598; cv=none; b=KSTK/2ENKFER3LXvJastXoQ8kKnfXIt2JdgZMjV0aGSAwXYKU4YSqUFqjdLpnpdZpXgLu+cELaoDK9ZKsL55VJV0kz5an02mZhYNFIDEepxGpC1XT13ni0lFrBgzgV1QYH9vyrDi85oSkKkRq76Wv3AALWfmx81P2Ww+NRVoM/8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787500598; c=relaxed/simple; bh=1x1A8dqQz4AyLG0IUED7vrbSBCY93U3YXCSqkVyL5VY=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=jVN/rvEcn3nAgScGAE8c423eN70A5SAyCFOTQfhUlQHWE5ALurneBJnHPDUa/sNAE2/AL743wBYkqxTSkVcFKB/Tf9q6q10V/aPx7o4MM3JYLSlnA3cplo2vXqOBSS8YAbdRA8NklmbL9o3psFNOTYr793+2nxAONSH+lj2uKA0= 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=74.125.231.65 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-oa2-f1.google.com with SMTP id 586e51a60fabf-44cf1835ec3so1192513fac.0 for ; Sun, 23 Aug 2026 08:56:36 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787500595; x=1788105395; 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=nBrqtnYqMHbWWhHSuD0kJxHTS0LQ5uRPteulUQ/J0zw=; b=bRA0Tf91jt/eEV3d44QT0hZIMdfpIK3Gov46tledyT1s429QFCRWN3BMkErVlupkIr e/ldQaLfTitoZ9ONPmSx68hkWkHUmrQSaZ8FDkQhVjrvHzo7XsrTmd8U/7g1cnT/hfZX pABMEV7nDyIYTrZudO5qKlxd/yUxOWsXAu7r2ROANOrtZooi5XOQn9dgkZ6A3+G5ijae hjun88Nw//urWBXnXhzx0a85/8fddcUiEzJ15gYhLYMVAuOxXk9q/sTqId3HYj+HQy/x 72oAXENWuUHJ75hOydPDhCtWC76EqDQSHOQ7bOpo2NpxxoCrC9z8Od7OPiJ1RODC8Zch 0p0w== X-Gm-Message-State: AFuF++n8G80IokDbrjS8F3wgKpiNfq2NySEH48AygDw6lb+cshkfLnRR XptlzOihOtEFkSYTcU10tvV/jGcgIAvJeZyo2/+trNCZcZUhrASYC1soeV9b1wU9fcFieg/w1Ud MUAHTkVcZH00I2UOX5KJeNW6cukYG81RN76JMZiWeNVvjinG4ZPpnzddfdM+zqw== Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1904:b0:6a1:1269:c776 with SMTP id 006d021491bc7-6b16b526483mr12493011eaf.25.1787500595594; Sun, 23 Aug 2026 08:56:35 -0700 (PDT) Date: Sun, 23 Aug 2026 08:56:35 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a8b1833.dbb3a75c.13dd47.0050.GAE@google.com> Subject: [syzbot] BUG: Address NUM::fb 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: b126f6f5940f Merge tag 'x86_mm_for_7.3-rc1' of git://git.k.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15d26e79580000 kernel config: https://syzkaller.appspot.com/x/.config?x=5c9120c514e57ada dashboard link: https://syzkaller.appspot.com/bug?extid=57f410c9a4f8d7a441d6 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 userspace arch: i386 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17ac7815580000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-b126f6f5.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/93496da690a1/vmlinux-b126f6f5.xz kernel image: https://storage.googleapis.com/syzbot-assets/239dcaeff1b9/bzImage-b126f6f5.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+57f410c9a4f8d7a441d6@syzkaller.appspotmail.com IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. IPv6: BUG: Address 2001::fb on device lo is missing its host route. --- 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 syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. 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