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 X-Spam-Level: X-Spam-Status: No, score=-4.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4CDBEC433FE for ; Thu, 23 Sep 2021 13:58:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3A21A60FA0 for ; Thu, 23 Sep 2021 13:58:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241599AbhIWOAQ (ORCPT ); Thu, 23 Sep 2021 10:00:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40736 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241585AbhIWOAM (ORCPT ); Thu, 23 Sep 2021 10:00:12 -0400 Received: from mail-pl1-x633.google.com (mail-pl1-x633.google.com [IPv6:2607:f8b0:4864:20::633]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4F64DC06175F; Thu, 23 Sep 2021 06:58:41 -0700 (PDT) Received: by mail-pl1-x633.google.com with SMTP id l6so4049701plh.9; Thu, 23 Sep 2021 06:58:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=dQ8E3Q2MW2Z7vutmUFNwZYSQmicIbTKeivLQcbQesU0=; b=ct6hKJttmu6yiOsaHjQjNcuS2q9iC0hRMBp2m0MIsR8BC51/S8EaIuLaOx8VL0eNLf sOLnbctL8ctPMfH3SNw4lMztvSyVR98r9YrSnbHVsrIw3py8hA2uL6pKUNmQ/3s/mQ87 SA9NPw+2YRaJWrSlTwGMUtDHhfCRPA7o2HX9O6oEGZfXlNsNSZPXiu1YMiYr29uZlqQu 1Kh1A8cu9kenQFT99944iVYIB9ByUHCOEm20mDhI0HB+mY3pcb6LabpRucEG4kPOOB8R g/JbUik5PGbtHMWsaMnMP0kZLgyiUUSvABqMFkmljEme32OYC9FNN3AUG9ZxCC+m9SLD c3rw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=dQ8E3Q2MW2Z7vutmUFNwZYSQmicIbTKeivLQcbQesU0=; b=sUcoK5CeUf1tW6X1o6dcR9ybrfiRPAF+gY4+jmp+nBFxAx8NjIABegImgQikbCSe9F kgjb3PS3EJ1tSchCAht+SqcqFJ1WPeMTIA5ncgyd9HfghKuVdsXhodxr6sbjIomXtmWx 3r8yw6Fh36dv1IA1x2NNzrPnYeg8LZeZJ+XKvuwDbWXoYMCHz8m9omjOgslJNW55i2Gw 6SvZhCp9HzV4anIwJf2nlpebe4A508nJ5WponwE9VwSy9JdPVZ7V+CQ/x+LnCRfOl+rU gS1jl9rh2v5Bsj+IXD8flAyA9g2Upl/tdPovf7pO9Dla+ajR0HqR1Bb1tE73bftm9b8E sqkQ== X-Gm-Message-State: AOAM533m4xHF2/WGzGTq84u1gp8DNZx9beaGnpyvgVx0DujvhHP9wqv1 l7xHpLHUULKTRo4Hq+HFaGY= X-Google-Smtp-Source: ABdhPJyV9qPubCpR7s9+BmL+zOFcEbtjOIctoJZFlUiPSY+rkgaiDApQHahPoPaD1e5UPo9hW2m/Fw== X-Received: by 2002:a17:902:7e05:b0:13b:7282:957f with SMTP id b5-20020a1709027e0500b0013b7282957fmr4015079plm.50.1632405520724; Thu, 23 Sep 2021 06:58:40 -0700 (PDT) Received: from [192.168.86.235] (c-73-241-150-58.hsd1.ca.comcast.net. [73.241.150.58]) by smtp.gmail.com with ESMTPSA id n9sm8712920pjk.3.2021.09.23.06.58.39 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 23 Sep 2021 06:58:40 -0700 (PDT) Subject: Re: kernel BUG in __pskb_pull_tail To: Hao Sun , davem@davemloft.net, kuba@kernel.org, Linux Kernel Mailing List Cc: andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, hawk@kernel.org, john.fastabend@gmail.com, kafai@fb.com, kpsingh@kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, yhs@fb.com References: From: Eric Dumazet Message-ID: <6837b784-9105-e2f2-252c-f5f7f451f128@gmail.com> Date: Thu, 23 Sep 2021 06:58:38 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 9/23/21 3:51 AM, Hao Sun wrote: > Hello, > > When using Healer to fuzz the latest Linux kernel, the following crash > was triggered. > > HEAD commit: 92477dd1faa6 Merge tag 's390-5.15-ebpf-jit-fixes' > git tree: upstream > console output: > https://drive.google.com/file/d/1f2RLLaRmVwV9ffKgoHvMuXGSs-730rdm/view?usp=sharing > kernel config: https://drive.google.com/file/d/1KgvcM8i_3hQiOL3fUh3JFpYNQM4itvV4/view?usp=sharing > > Sorry, I don't have a reproducer for this crash, hope the symbolized > report can help. > If you fix this issue, please add the following tag to the commit: > Reported-by: Hao Sun > > This has been reported many times and we (Vasily, Jakub, ...) are on it. A bit slow to review V8 because of LPC conference.