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 C0AB5C433EF for ; Fri, 25 Mar 2022 06:19:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358444AbiCYGUo (ORCPT ); Fri, 25 Mar 2022 02:20:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43858 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356147AbiCYGUf (ORCPT ); Fri, 25 Mar 2022 02:20:35 -0400 Received: from mail-yw1-x112d.google.com (mail-yw1-x112d.google.com [IPv6:2607:f8b0:4864:20::112d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C2F0453E13 for ; Thu, 24 Mar 2022 23:19:00 -0700 (PDT) Received: by mail-yw1-x112d.google.com with SMTP id 00721157ae682-2db2add4516so73166237b3.1 for ; Thu, 24 Mar 2022 23:19:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=OHcnohF6goVq7JBxRHCvRlkPux4XGzCni0uGSevDn8c=; b=YHAaIesEtaUsqmDpxvbXXRBUIee2FtJzmyPY4rn9EDAOQXNjMsmJ6PxCN+/qNnhbL2 cTbHG9CmcM8Cb14+C02T7Btyb9ee+JNRck8cU6Q65IZikCfUvPFNPpEMjmYWicElfxbc DxtFtwLZJJ68JCDrjTTgTdnoPhRHtkdedeZ3VlZJbS0FNehLYoQk0hRMHDvyxWQhiZYn Fs6tgqw6hys0TuVRQ4Q3eorl08MthYi1Of4dLtJBddZELVQXshNeNzAiNYN76dXh8S0C mDpWwBTfoFx29JbWYkR7wx9K1VeS1SZs3phaLl25x+2i3SnHLh38WmorIPrv8dbQa4h1 yW9g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=OHcnohF6goVq7JBxRHCvRlkPux4XGzCni0uGSevDn8c=; b=QX/n9zlT1WSaDTqWISTXty7hXBPISTuMv3Qu5Wi6l5uXbJC8HLnExmDeBVYmnLJAJ9 RkYuTCq8kxomHel5XyuD3PbWWGIIpdcN8ZbMG6G7DgwhVNqSICNimt55JxargYeErIzA RrnkG29LMIFN9+puazpyfigPlbxFhfAGPfrfoBsY26i6Ua4Nctp8kfqBJGYSFBDbPG/v XAmp351YRNFIjlQwAubAilS7PsEWiieNk9/rl5ONA02+wzF22z8Y47evZm6+d4AzUzH3 At9zQ0wqtVWyZ/mB5MHO7/QX0fxQcPzghmGEhRh3/0tRzWuZdbT6uWlh05UXMqMWYMmd Bgng== X-Gm-Message-State: AOAM530iwXFABq6bGOf0YCxa/tm89mm1TfHlSwUjTOPKKzzYc9LEgwa1 OhZLafURJPn1OHMvlRxzHuSRKINUEA7N/ABFOZnzSg== X-Google-Smtp-Source: ABdhPJz4fwI6TdbfnTLMNK7QswYiU2nkRDpz3k8FqPiSSRMbDz/RmtbjNZsxFf/zePPXhQHOCM9n7IYp9FPmFhCUOUo= X-Received: by 2002:a81:18c3:0:b0:2e5:da72:2383 with SMTP id 186-20020a8118c3000000b002e5da722383mr8960656ywy.338.1648189139773; Thu, 24 Mar 2022 23:18:59 -0700 (PDT) MIME-Version: 1.0 References: <00000000000079c56a05ba1c18c3@google.com> <000000000000b8cdba05dae41558@google.com> In-Reply-To: <000000000000b8cdba05dae41558@google.com> From: Dmitry Vyukov Date: Fri, 25 Mar 2022 07:18:48 +0100 Message-ID: Subject: Re: [syzbot] KASAN: use-after-free Read in ext4_xattr_set_entry (4) To: syzbot Cc: adilger.kernel@dilger.ca, cmaiolino@redhat.com, lczerner@redhat.com, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, sjc@chobot.com, syzkaller-bugs@googlegroups.com, tytso@mit.edu, wanjiabing@vivo.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 23 Mar 2022 at 16:07, syzbot wrote: > > syzbot suspects this issue was fixed by commit: > > commit 6e47a3cc68fc525428297a00524833361ebbb0e9 > Author: Lukas Czerner > Date: Wed Oct 27 14:18:52 2021 +0000 > > ext4: get rid of super block and sbi from handle_mount_ops() > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=100bc10b700000 > start commit: f8ad8187c3b5 fs/pipe: allow sendfile() to pipe again > git tree: upstream > kernel config: https://syzkaller.appspot.com/x/.config?x=96b123631a6700e9 > dashboard link: https://syzkaller.appspot.com/bug?extid=4cb1e27475bf90a9b926 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11131f94d00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15c3761b500000 > > If the result looks correct, please mark the issue as fixed by replying with: > > #syz fix: ext4: get rid of super block and sbi from handle_mount_ops() > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection Looks reasonable: #syz fix: ext4: get rid of super block and sbi from handle_mount_ops()