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=-11.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham 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 9B6D2C433EF for ; Fri, 3 Sep 2021 20:38:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7E70B610CC for ; Fri, 3 Sep 2021 20:38:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234018AbhICUji (ORCPT ); Fri, 3 Sep 2021 16:39:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39598 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236047AbhICUjd (ORCPT ); Fri, 3 Sep 2021 16:39:33 -0400 Received: from mail-pf1-x431.google.com (mail-pf1-x431.google.com [IPv6:2607:f8b0:4864:20::431]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 41DD0C061575 for ; Fri, 3 Sep 2021 13:38:32 -0700 (PDT) Received: by mail-pf1-x431.google.com with SMTP id m26so427701pff.3 for ; Fri, 03 Sep 2021 13:38:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=SXA74MGGnpMLJBlBLFB2fo0p77PdPKeB7j4vWOpFbgA=; b=nw2VJup3MuIT3HYBDrxKERcfiBaDohh+oGekw2GnKIB3/5yL7SZsrrGJ+uxDCbsprl yArFwNdaf5aDJuBQ/5yveze8lPGExml2Y3ATqAD4i4H4u/AXXFJMnxw4ecUWgXc4b9aS k/YxZZW9iVXFN3LCyJutIc1C5PZKafRX/Oj1q6/d0cFSK0F5HvSdOrPg2b9EsSU+gr40 BzOavNjXQMy8QmLjzMG/9+EeKPOzm3IAWSdFWLY5aSCQec3tJcsJOgB+n8lizV4t+vNU TUdREwSHFa7EXMo+dylFlSX8KumY2JrRowHRkTfH78sEY8jS89x1jd6cvOqqfR6TVTlo If6w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=SXA74MGGnpMLJBlBLFB2fo0p77PdPKeB7j4vWOpFbgA=; b=kFTpb/9jtWAWVodapdiFJMKaB3ok+2827WIjOClFK/9Vn2r8dbOWHIp4UXma9v4uD5 UIVb0jBuRvLjQrzJweMCmdS6BoxkV9RWw5OJi4Q1lRDYAgbeyv+klKsJXkootwOYxl6n yzJZgV9NzWE/6i7Xnl0rvDmPAGitKpZKWE1xib0cZEYi7fqJNV7JThyv2vMRU0DjHD3J cjGp53k4TiqeRHLX5fZtyxVB41GMUENGYoB3blORr2jfZfXdOUwqffPmJw30lhebVCT+ PplQcUISGgg8dvg6ruj7ugVf/FEvQ40afc2Tew+5U1BTAwu9tsNXjbSbnl4HFNgCUBV8 2SDw== X-Gm-Message-State: AOAM530SKqkau/usppnfN1ARk0KkKpNeb7uNvqU3lWbIIGhLJk5Et1Eg xo5Mm4fawm9Fzmi3B7W5Jf8yoA== X-Google-Smtp-Source: ABdhPJweoVMMzL7tuqAQdffveXdXyK8C4wFxqZl/wW2SRRGmxbgZ8vmT7er7geuhYIAzmGP+N28/MA== X-Received: by 2002:a05:6a00:16d2:b029:300:200b:6572 with SMTP id l18-20020a056a0016d2b0290300200b6572mr703225pfc.62.1630701511522; Fri, 03 Sep 2021 13:38:31 -0700 (PDT) Received: from ?IPv6:2600:380:7567:4da9:ea68:953f:1224:2896? ([2600:380:7567:4da9:ea68:953f:1224:2896]) by smtp.gmail.com with ESMTPSA id w17sm238691pfq.111.2021.09.03.13.38.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 03 Sep 2021 13:38:31 -0700 (PDT) Subject: Re: [syzbot] BUG: unable to handle kernel NULL pointer dereference in kiocb_done To: syzbot , asml.silence@gmail.com, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <0000000000000d4da305cb1d2467@google.com> From: Jens Axboe Message-ID: <5a93ff90-98be-b5af-29e9-a2f8cca82458@kernel.dk> Date: Fri, 3 Sep 2021 14:38:28 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <0000000000000d4da305cb1d2467@google.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 9/3/21 2:28 PM, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 4ac6d90867a4 Merge tag 'docs-5.15' of git://git.lwn.net/li.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=13a275f5300000 > kernel config: https://syzkaller.appspot.com/x/.config?x=3c3a5498e99259cf > dashboard link: https://syzkaller.appspot.com/bug?extid=726f2ce6dbbf2ad8d133 > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=124a3b49300000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=142e610b300000 #syz test git://git.kernel.dk/linux-block for-5.15/io_uring -- Jens Axboe