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 44C03C6FA83 for ; Mon, 26 Sep 2022 10:06:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233908AbiIZKGF (ORCPT ); Mon, 26 Sep 2022 06:06:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58838 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234602AbiIZKGC (ORCPT ); Mon, 26 Sep 2022 06:06:02 -0400 Received: from mail-wr1-x432.google.com (mail-wr1-x432.google.com [IPv6:2a00:1450:4864:20::432]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 68CB73719D; Mon, 26 Sep 2022 03:06:01 -0700 (PDT) Received: by mail-wr1-x432.google.com with SMTP id n12so9372055wrx.9; Mon, 26 Sep 2022 03:06:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:in-reply-to:references:to:from :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date; bh=RMivvzdJImEjzPUG1xZSPrb1sw7OyHM+Raq97VRxsCA=; b=X3Y2zEGlEdX2dReB7gHnUjEzNL04KOKJuH4vCtJeA5w2XdnRJitoAAVgOota75m3jY JUk1jJxzOCBqVvA/U900zVK712ziT7DQKRD5XeXNJZMfOQDLDpxCz07rAcsOBNVzyuM6 FQbUYasbpX/PZKfEoQkdatiEjwXvkOoflouoGVhXVotR7ljGE5SomXU44kt74+iAjEXN lt0cmMHhQpoOxSUhyulZ5bRAyvowstIGUEyyba6bQ2jj+P0mwi6Cc/vdrLbpYqzBpMzI L30Q623PxQvZ6GC/YXVUHSRvEoizLuF6Ia2AcL1HTgkdHgD0jAnhgIN3zYXpBineAsE0 cdbw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:references:to:from :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date; bh=RMivvzdJImEjzPUG1xZSPrb1sw7OyHM+Raq97VRxsCA=; b=ZcxtnKqAkkmvCUzcMjWJubDhLhXb33eZz+a/BltI6958IB5MtaS8p9u6ON7AB4jKlP DXoAF3DRgkI+jrCztcKHmc8qO+onupy+BYpaorE3WeAFeMG5wdRVYPHJFt1e4deDm4yu DzaQd2jHuLJQ821CDH+YHpzuKrIEaVerB9Qi9me9A1xd+PIZ/PcL/n9fW4XVCpiGGY0v DdpsxMRTg4rtioGRXMgWYSDlV7mUGGx6NAIwYtLbOdeNptUhOJUllseq675NJJIxtgem OG7gV5ahcJvym/o+62yMaHjbbzz2IBlnq/ERtVRvxccBfOYG0C7PnomicmPDU2vVYEZg pikw== X-Gm-Message-State: ACrzQf1pnDXkjdGcvPYFrV0b+6JNRgzYexBwywhHI+qJoNfuXafDXa54 nEF3uRQ5pAgDuPoQxUV/BgYWYWzaQwk= X-Google-Smtp-Source: AMsMyM4QXhFQKm3afaR2/+o31hmb62Q9BLZQ1xN2DBx1CAGV42FHBOxw2nX2DfegbQlQLWKV3inDBw== X-Received: by 2002:a5d:65ce:0:b0:228:d8b6:d1 with SMTP id e14-20020a5d65ce000000b00228d8b600d1mr12928071wrw.486.1664186759884; Mon, 26 Sep 2022 03:05:59 -0700 (PDT) Received: from [192.168.8.198] (94.196.6.209.threembb.co.uk. [94.196.6.209]) by smtp.gmail.com with ESMTPSA id z5-20020a5d6405000000b0022af9555669sm16251734wru.99.2022.09.26.03.05.58 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 26 Sep 2022 03:05:59 -0700 (PDT) Message-ID: Date: Mon, 26 Sep 2022 11:04:03 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.12.0 Subject: Re: [syzbot] KASAN: invalid-free in io_clean_op Content-Language: en-US From: Pavel Begunkov To: syzbot , axboe@kernel.dk, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <00000000000091b65005e983c19d@google.com> <8c9845cf-a5fe-21c0-10a5-2369758dd23c@gmail.com> In-Reply-To: <8c9845cf-a5fe-21c0-10a5-2369758dd23c@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 9/25/22 18:54, Pavel Begunkov wrote: > On 9/25/22 18:29, syzbot wrote: >> Hello, >> >> syzbot found the following issue on: >> >> HEAD commit:    aaa11ce2ffc8 Add linux-next specific files for 20220923 >> git tree:       linux-next >> console+strace: https://syzkaller.appspot.com/x/log.txt?x=1608cadf080000 >> kernel config:  https://syzkaller.appspot.com/x/.config?x=186d1ff305f10294 >> dashboard link: https://syzkaller.appspot.com/bug?extid=edfd15cd4246a3fc615a >> compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 >> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=144acdef080000 >> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10686540880000 >> >> IMPORTANT: if you fix the issue, please add the following tag to the commit: >> Reported-by: syzbot+edfd15cd4246a3fc615a@syzkaller.appspotmail.com > > #syz test: git://git.kernel.dk/linux.git for-6.1/io_uring Should be similar to the previous net/op_clean problem but now zc and because of that we set CLEANUP too early. Just a guess, will take a look at the repro -- Pavel Begunkov