From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E586DCD37B0 for ; Mon, 18 Sep 2023 05:16:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236741AbjIRFQY (ORCPT ); Mon, 18 Sep 2023 01:16:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42178 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239504AbjIRFQG (ORCPT ); Mon, 18 Sep 2023 01:16:06 -0400 Received: from mail-oa1-f80.google.com (mail-oa1-f80.google.com [209.85.160.80]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2294C10E for ; Sun, 17 Sep 2023 22:16:00 -0700 (PDT) Received: by mail-oa1-f80.google.com with SMTP id 586e51a60fabf-1d665ea8121so4491908fac.1 for ; Sun, 17 Sep 2023 22:16:00 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695014157; x=1695618957; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=m1ItRi5jKTmhwOVx6QlQ/dcqMcK3lZjIo74/O9TFpE8=; b=ChVB4otkSnwiHxrmKleIs//Kc4e/hjABB1fdDRl7ar42mToTlpV+msBmhCZxkgOJ1F uNvRQLyhgVpmHrOzkYBpixeoaUJOeEEs4gtzC0MgnnV6tkdX8c5ScWjEzEjF6Ag1duTP wNTNn2miFFhrwX4cgZwaUha8E4wR51OXbQCoGY3l15J7+xg1T2Hqf46V+Sh2SAxUYXnE M9G/1Jta/HZ6WnKmtPgDTcZqx23/xFzPPGmciTSOb7bjBPFtPEZlU4DkPILiwJIjVMK1 bI+xBZHpQKairz1oAPSY1/lMl1SX5xmGMOcHmcJofhIkJi5Y6RdKSfDU6WaJPFFuksOU 9OQA== X-Gm-Message-State: AOJu0YyaWjiPTenROgpdhKOPGEytMeJAGRqEgHDagHAU6r/r7jPprCg/ T+A4y2mtLiPuOYNrSJbhmUWLX3YB/TvEn/nXJnlGsN5yZjYy X-Google-Smtp-Source: AGHT+IF7mAyVIHV6YnGModzlYH0POb+0lxli3uAArJRWyyKInpRNbqwzru/TIaqBALOx4uHh0DvMAeBC+ox7qzLUN2qkIj4mKHX9 MIME-Version: 1.0 X-Received: by 2002:a05:6870:c79a:b0:1c8:e107:4193 with SMTP id dy26-20020a056870c79a00b001c8e1074193mr3142395oab.3.1695014157501; Sun, 17 Sep 2023 22:15:57 -0700 (PDT) Date: Sun, 17 Sep 2023 22:15:57 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000bf4d0c06059b3c95@google.com> Subject: [syzbot] [bpf?] WARNING in bpf_mprog_pos_after From: syzbot To: andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, haoluo@google.com, john.fastabend@gmail.com, jolsa@kernel.org, kpsingh@kernel.org, linux-kernel@vger.kernel.org, martin.lau@linux.dev, netdev@vger.kernel.org, sdf@google.com, song@kernel.org, syzkaller-bugs@googlegroups.com, yonghong.song@linux.dev Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: ca5ab9638e92 Merge branch 'selftests-classid' git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=110ef2c2680000 kernel config: https://syzkaller.appspot.com/x/.config?x=e82a7781f9208c0d dashboard link: https://syzkaller.appspot.com/bug?extid=2558ca3567a77b7af4e3 compiler: gcc (Debian 12.2.0-14) 12.2.0, 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/3410dfa76b34/disk-ca5ab963.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/993bfbc60422/vmlinux-ca5ab963.xz kernel image: https://storage.googleapis.com/syzbot-assets/40dff86d8c81/bzImage-ca5ab963.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+2558ca3567a77b7af4e3@syzkaller.appspotmail.com 8021q: adding VLAN 0 to HW filter on device batadv38 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 14695 at include/linux/bpf_mprog.h:198 bpf_mprog_total include/linux/bpf_mprog.h:198 [inline] WARNING: CPU: 0 PID: 14695 at include/linux/bpf_mprog.h:198 bpf_mprog_pos_after+0x194/0x2b0 kernel/bpf/mprog.c:216 Modules linked in: CPU: 0 PID: 14695 Comm: syz-executor.3 Not tainted 6.5.0-syzkaller-12718-gca5ab9638e92 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 RIP: 0010:bpf_mprog_total include/linux/bpf_mprog.h:198 [inline] RIP: 0010:bpf_mprog_pos_after+0x194/0x2b0 kernel/bpf/mprog.c:216 Code: e8 03 42 80 3c 38 00 0f 85 f2 00 00 00 4d 3b 65 00 0f 85 26 ff ff ff e8 3a 55 e3 ff 8d 43 01 89 44 24 14 eb 48 e8 2c 55 e3 ff <0f> 0b e9 36 ff ff ff e8 20 55 e3 ff 4c 89 f2 48 b8 00 00 00 00 00 RSP: 0018:ffffc90004d87ac8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888043c88000 RSI: ffffffff81a47c94 RDI: 0000000000000005 RBP: 0000000000000040 R08: 0000000000000005 R09: 000000000000003f R10: 0000000000000040 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888042c89418 R14: ffffc90004d87b98 R15: dffffc0000000000 FS: 00007f51b80af6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30823000 CR3: 0000000026678000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_mprog_attach+0x433/0xfe0 kernel/bpf/mprog.c:266 tcx_prog_attach+0x2bd/0xbd0 kernel/bpf/tcx.c:39 bpf_prog_attach kernel/bpf/syscall.c:3848 [inline] __sys_bpf+0x413e/0x4e90 kernel/bpf/syscall.c:5344 __do_sys_bpf kernel/bpf/syscall.c:5439 [inline] __se_sys_bpf kernel/bpf/syscall.c:5437 [inline] __x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:5437 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f51b727cae9 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:00007f51b80af0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f51b739bf80 RCX: 00007f51b727cae9 RDX: 0000000000000020 RSI: 0000000020000140 RDI: 0000000000000008 RBP: 00007f51b72c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f51b739bf80 R15: 00007ffe27bee9b8 --- 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 bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup