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 BEDC2E7F145 for ; Tue, 26 Sep 2023 23:01:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231817AbjIZW7w (ORCPT ); Tue, 26 Sep 2023 18:59:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55642 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232013AbjIZW5v (ORCPT ); Tue, 26 Sep 2023 18:57:51 -0400 Received: from mail-oi1-x246.google.com (mail-oi1-x246.google.com [IPv6:2607:f8b0:4864:20::246]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C48A917EB6 for ; Tue, 26 Sep 2023 14:38:29 -0700 (PDT) Received: by mail-oi1-x246.google.com with SMTP id 5614622812f47-3ae4cefe17dso10016492b6e.0 for ; Tue, 26 Sep 2023 14:38:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695764307; x=1696369107; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=MrujW9fuUJnGCukcO08Sc48BocArkHwApSrdDVAkMsU=; b=EHJuNeuTkfvCm4HKCRnY2Lxm4BpYvx+0OT6toVkS6bFk6QJfVZFMl9QAWmfe/ZSadc ZTIRoyuZA5a2l/Mtf6f+QwISKPLzoUZMPnfhzsmcMxmiPDgz89sRBcLVbtOGJDJNTlnV HiNLwhW9cVvkG+Pr0943C1QvdB2VsPVdBRlSexWs3EY83vd+xaImIri1ZE3uYiBI3iJb 2KbI9PHZpyY/4xlfwJhAE0CteKpfV4VxZBp1x811HDH3MAT7DyMmqoC4EBt45JPSwXLa PnRFWAq3iIf9N9NfoYBoThKHWrrgAaA1YYPVQp7iFt8Qg0R5BaZ1gI0TXVr3Vtj1onGi kMXg== X-Gm-Message-State: AOJu0YxxeWIR2hFfM7b45OuQJShQXScO2BvNOSxH14lG9gGtT4D4K+j2 N8tgWfh6SK1KWcv4Yk1T4U6bimggYl9ppMU85TAWzzX9QHXV X-Google-Smtp-Source: AGHT+IHqUNvgj8r/sXHE/1psfIuTkefZXsSeZ3RVACSIBoFlYFfchd4gvfMw4G4oZMJnX1y+ZSBluLCG4GwUpEjncSbmx9hI9CeO MIME-Version: 1.0 X-Received: by 2002:a05:6808:2018:b0:3ae:1e08:41e7 with SMTP id q24-20020a056808201800b003ae1e0841e7mr90974oiw.9.1695764306911; Tue, 26 Sep 2023 14:38:26 -0700 (PDT) Date: Tue, 26 Sep 2023 14:38:26 -0700 In-Reply-To: <0000000000002c6cf80606492f14@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000022eedd060649e522@google.com> Subject: Re: [syzbot] [bpf?] WARNING in bpf_mprog_pos_before 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, kuba@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, yhs@fb.com, yonghong.song@linux.dev Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this issue to: commit e420bed025071a623d2720a92bc2245c84757ecb Author: Daniel Borkmann Date: Wed Jul 19 14:08:52 2023 +0000 bpf: Add fd-based tcx multi-prog infra with link support bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=116ab4b6680000 start commit: a59addacf899 drivers/net: process the result of hdlc_open(.. git tree: net final oops: https://syzkaller.appspot.com/x/report.txt?x=136ab4b6680000 console output: https://syzkaller.appspot.com/x/log.txt?x=156ab4b6680000 kernel config: https://syzkaller.appspot.com/x/.config?x=d594086f139d167 dashboard link: https://syzkaller.appspot.com/bug?extid=b97d20ed568ce0951a06 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10dc3946680000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=107f4e1e680000 Reported-by: syzbot+b97d20ed568ce0951a06@syzkaller.appspotmail.com Fixes: e420bed02507 ("bpf: Add fd-based tcx multi-prog infra with link support") For information about bisection process see: https://goo.gl/tpsmEJ#bisection