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=-3.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 972FDC4363A for ; Thu, 8 Oct 2020 03:38:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3563920714 for ; Thu, 8 Oct 2020 03:38:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727765AbgJHDiL (ORCPT ); Wed, 7 Oct 2020 23:38:11 -0400 Received: from mail-io1-f77.google.com ([209.85.166.77]:42442 "EHLO mail-io1-f77.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726323AbgJHDiL (ORCPT ); Wed, 7 Oct 2020 23:38:11 -0400 Received: by mail-io1-f77.google.com with SMTP id k14so2888430ioj.9 for ; Wed, 07 Oct 2020 20:38:09 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=4IhbBH7ECghcPFerwikAMQpqWj6YlBpaCR+/1lLbfIE=; b=KiaVXSZx7j7tIYN/7fTf96o8kyP/5NbbCI9mnDGxsni4bISB1Nm5+Q+J6f/1TiZQ1c 6+fgM6oLnkcKmCG8ZUTz/LveZuTQV317naiM/KFOU6D3eNlg6huzrChhq3ipUs2Q2EF0 75e7VjIEN42mjAFHPJSGNjKJ2DVBfBZc00aEFfgSkBeiIPWP+4N8CF7D1BuAa8ppZaz+ v9qROsFkF161Y15Vtwpano1SlXibNA3xgdHmOvf9n86jDHx9T/szvw3/ThjAOlL2Hh0h 3WoNvJUdf7XedM0LhcSxwyvGfwKSbQywUzGiBXvSzrtw4jgbMFhJWCX2CMF9LM0oDLo2 X12w== X-Gm-Message-State: AOAM533RmUOU99N2fDGAeLc9tWDge9uV3ke83U4IWB8740FGtQrvGOic rsNGrwZGcHz4gE6iJ5llmobdFmpFqI4NKL35pNoQGcBtenKQ X-Google-Smtp-Source: ABdhPJynKSURyz8krzVv92HNweDLHB/5PqX1t0MirYXocBnDSftoIzE01f7AZnfI+TcgJdlhKPHkNqcCx/gg/MZ7dJ+aWSiS2SjA MIME-Version: 1.0 X-Received: by 2002:a6b:f30a:: with SMTP id m10mr2888088ioh.164.1602128289047; Wed, 07 Oct 2020 20:38:09 -0700 (PDT) Date: Wed, 07 Oct 2020 20:38:09 -0700 In-Reply-To: <0000000000009323e705ae870d48@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000008dab1205b1208fe6@google.com> Subject: Re: KASAN: use-after-free Read in delete_partition From: syzbot To: anant.thazhemadam@gmail.com, axboe@kernel.dk, bgolaszewski@baylibre.com, dan.j.williams@intel.com, dragonjetli@gmail.com, gregkh@linuxfoundation.org, hch@lst.de, hl1998@protonmail.com, jack@suse.cz, jean-philippe@linaro.org, johannes.thumshirn@wdc.com, jroedel@suse.de, linux-block@vger.kernel.org, linux-kernel-mentees@lists.linuxfoundation.org, linux-kernel@vger.kernel.org, rafael@kernel.org, saravanak@google.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org syzbot suspects this issue was fixed by commit: commit 08fc1ab6d748ab1a690fd483f41e2938984ce353 Author: Christoph Hellwig Date: Tue Sep 1 09:59:41 2020 +0000 block: fix locking in bdev_del_partition bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1259b1e7900000 start commit: f75aef39 Linux 5.9-rc3 git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=3c5f6ce8d5b68299 dashboard link: https://syzkaller.appspot.com/bug?extid=b8639c8dcb5ec4483d4f syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15c43c79900000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=173dfa1e900000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: block: fix locking in bdev_del_partition For information about bisection process see: https://goo.gl/tpsmEJ#bisection