From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) (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 2DBE72C853 for ; Sat, 9 Mar 2024 15:13:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709997216; cv=none; b=VYbmeQP6m0X2/t/f+tJ8DfrO6esZmqAChioTu8uTamP/WLgWLCTkLk7ZIPp3LcQ0C8n6kijrvdV0HUCc1CnNKgSOFzEylDV9xyg/5fAhw6mS1lIoweBqMa2UuR9NcCqmRophNlzvgPh6A47c5TZ1HmnMlIu/qcR+Au7dbpdBEtQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709997216; c=relaxed/simple; bh=ecjBtlmvGV0p7yqL+7M3qVsWDvuTDH/Tf7Fyp/EEZmM=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=c13kX6dPyDZWTViu/MAx/4HDDQt29KJHr4qDFL1DUksIL8OKC+828Uz1oGeQcAFWOJexxy9LPNc+5xwuwOUDMSlXyx7pOwqxFVkj2/EaNJ46JaY2keRDHXKesPRnxHS7mhyyPoVTGHWiTwAilOcU6FsYTgSdYy7jR+0F2n45qyY= 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=209.85.166.70 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-io1-f70.google.com with SMTP id ca18e2360f4ac-7c8a82e5f70so22067339f.0 for ; Sat, 09 Mar 2024 07:13:34 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709997214; x=1710602014; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=lscIlWimXdY5Wwukw/9HSnM1Sst+0Oh9TM0CnsPtOU4=; b=D///MWFs5CrJY+UBvAYfvn4QeE4TOPUAnJ4jsm6w5z8SPXjWkun+n7TclEAfbQ4YKb 4vBYdCMsdLnYqwc42iTUpu6sHOA836kpoRLKcYxFxo5QtMfvd8P/BDckKkQBsQcSnW1R OEU+/UF0YS9xao9SVUoZyxTXNAWra/3ICTO95FSfpL4vGTzuCA5Q/tCPThMQ1pU+MFTX z9/424HHMYLI57EMwe/fzBgkaoHoKAtaXFpCGCRUAZjzgQfPDH4T0jgQiSlA5q2dRDkJ zphxbblfb4vSyMhcy1VSkzZtEI42T0nRkbRAgOXkg5Mq2eMTVDUxCX9qV1XwLQ0m20z9 zfRQ== X-Forwarded-Encrypted: i=1; AJvYcCXJjEp3qUD+W4yrYluGsA148OU8cY4LS0JjpTrjcEfPRsUA3CgL/gjE/CHfbrteM3Mhf9VaxFYIjXqoBaBtuhwfvHrktmDD X-Gm-Message-State: AOJu0Yxe6BL7Yj9mgzPv8IzQcnzrwnguyOjZxAqRYAk9XqhN3wn6CgkM mP3z7SP4DDuLIoO0wqkDzCl13EgjJUsZY9F0fihuBu5pHvBpOcdiHuR7vnXQQdbmdz/XiDEUdNX VTI/6hGs7u1QuxIdMrD4IEQzy72rajPsm0PUTfKBcYe7rfj9My1QIUDo= X-Google-Smtp-Source: AGHT+IEm0rsByzTWkN1qBG4ImRsHHYa2jnMi/UTtmEMeG083q6x+07+C/fVBTVdx6YBC6cU3EvLA6X6rEaCeEX2ToKE0KpwijcQS Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:24ca:b0:476:7265:9bfc with SMTP id y10-20020a05663824ca00b0047672659bfcmr113645jat.6.1709997214435; Sat, 09 Mar 2024 07:13:34 -0800 (PST) Date: Sat, 09 Mar 2024 07:13:34 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000088981b06133bc07b@google.com> Subject: [syzbot] [net?] kernel BUG in __nla_validate_parse From: syzbot To: davem@davemloft.net, dsahern@kernel.org, edumazet@google.com, 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: 2f901582f032 Merge tag 'for-net-next-2024-03-08' of git://.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=112f130a180000 kernel config: https://syzkaller.appspot.com/x/.config?x=63afafeedf00ef8f dashboard link: https://syzkaller.appspot.com/bug?extid=65bb09a7208ce3d4a633 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/b03984cb5619/disk-2f901582.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/41787ac7c9d9/vmlinux-2f901582.xz kernel image: https://storage.googleapis.com/syzbot-assets/da7931fd36f6/bzImage-2f901582.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+65bb09a7208ce3d4a633@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at lib/nlattr.c:411! invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 PID: 14369 Comm: syz-executor.2 Not tainted 6.8.0-rc7-syzkaller-02415-g2f901582f032 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 RIP: 0010:validate_nla lib/nlattr.c:411 [inline] RIP: 0010:__nla_validate_parse+0x2f61/0x2f70 lib/nlattr.c:635 Code: 48 8b 4c 24 18 80 e1 07 38 c1 0f 8c e0 f7 ff ff 48 8b 7c 24 18 e8 ff 0e 1d fd e9 d1 f7 ff ff e8 d5 c2 91 06 e8 50 64 ba fc 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 RSP: 0018:ffffc90003c1eec0 EFLAGS: 00010287 RAX: ffffffff84d90ad0 RBX: ffffffff8caa11b0 RCX: 0000000000040000 RDX: ffffc9000499a000 RSI: 000000000000065e RDI: 000000000000065f RBP: ffffc90003c1f100 R08: ffffffff84d8df5b R09: 0000000000000000 R10: ffffc90003c1f1a0 R11: fffff52000783e46 R12: 0000000000000008 R13: 1ffff1100f9c4183 R14: 000000000000006e R15: 0000000000000005 FS: 00007f5fe2d916c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000440 CR3: 00000000229a2000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __nla_parse+0x40/0x60 lib/nlattr.c:732 __nlmsg_parse include/net/netlink.h:756 [inline] nlmsg_parse include/net/netlink.h:777 [inline] rtm_del_nexthop+0x257/0x6d0 net/ipv4/nexthop.c:3256 rtnetlink_rcv_msg+0x89b/0x10d0 net/core/rtnetlink.c:6595 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2556 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline] netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361 netlink_sendmsg+0x8e0/0xcb0 net/netlink/af_netlink.c:1902 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f5fe207dda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5fe2d910c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f5fe21abf80 RCX: 00007f5fe207dda9 RDX: 0000000000000000 RSI: 0000000020000440 RDI: 0000000000000003 RBP: 00007f5fe20ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f5fe21abf80 R15: 00007fff7d5a1278 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:validate_nla lib/nlattr.c:411 [inline] RIP: 0010:__nla_validate_parse+0x2f61/0x2f70 lib/nlattr.c:635 Code: 48 8b 4c 24 18 80 e1 07 38 c1 0f 8c e0 f7 ff ff 48 8b 7c 24 18 e8 ff 0e 1d fd e9 d1 f7 ff ff e8 d5 c2 91 06 e8 50 64 ba fc 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 RSP: 0018:ffffc90003c1eec0 EFLAGS: 00010287 RAX: ffffffff84d90ad0 RBX: ffffffff8caa11b0 RCX: 0000000000040000 RDX: ffffc9000499a000 RSI: 000000000000065e RDI: 000000000000065f RBP: ffffc90003c1f100 R08: ffffffff84d8df5b R09: 0000000000000000 R10: ffffc90003c1f1a0 R11: fffff52000783e46 R12: 0000000000000008 R13: 1ffff1100f9c4183 R14: 000000000000006e R15: 0000000000000005 FS: 00007f5fe2d916c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00104bb94 CR3: 00000000229a2000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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