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=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS 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 440B7C433DF for ; Sun, 11 Oct 2020 12:28:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0394C207D3 for ; Sun, 11 Oct 2020 12:28:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387808AbgJKM2H (ORCPT ); Sun, 11 Oct 2020 08:28:07 -0400 Received: from mail-il1-f207.google.com ([209.85.166.207]:55846 "EHLO mail-il1-f207.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387744AbgJKM2G (ORCPT ); Sun, 11 Oct 2020 08:28:06 -0400 Received: by mail-il1-f207.google.com with SMTP id 9so10533284ile.22 for ; Sun, 11 Oct 2020 05:28:06 -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=EDB5NZGw8qQ43rEg6l7KdvPf4RNp1vg5LBmECT+lt9E=; b=VPQJrVAUpZftURET9NeW6jB1u0x9q7nNz0o2BiN87PrBx8KlzcSFeF9kJI3jlApo6h bzNUhqOT8169MsfhxAbpJIwFDJ2PAq3H9p23VyDxBKaMVFW2qN3aleZ4w4cOE0Qw0Ekh oxerB7BrG3yEyKOpBtqVrr/nNYXyePYLxCsmfFhKbzOz01tXgwcRarP7rjM7uZ/pcwrN D0e1Px9UAlwgFbR1CIF6eKswg96nrQfji4UjaKvqG63ogrEW4zKAcmZ8yeIIY0qxJIdQ akssIvMT4tZr542yEC8vhYvespFWgBGwP4DgAed605W+dTVD96QWcxOGTulfgcdAiHI0 3Hdg== X-Gm-Message-State: AOAM532KBUsOJw04L8PVWpG2ef+nqv80iyZU8Rd1B2HbSo14ICwcwHUz IJ4seHSz6n1TSwKsZZ5/6mSsDpVpoO8bcP/LMqRBQI5afmaO X-Google-Smtp-Source: ABdhPJxKSG8HAsmoVPNeZb5m/PDhpBKzzO/MJ5ApKW3AfuxtHLoUiUgm7uB+jBFbva8PBG/P6NibIxqN5tm9YBayUTh7p2qHB5nn MIME-Version: 1.0 X-Received: by 2002:a92:ba1c:: with SMTP id o28mr15291963ili.182.1602419285649; Sun, 11 Oct 2020 05:28:05 -0700 (PDT) Date: Sun, 11 Oct 2020 05:28:05 -0700 In-Reply-To: <000000000000e32a8b05b01f808a@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000004d719705b164508d@google.com> Subject: Re: KASAN: use-after-free Read in fscache_alloc_cookie From: syzbot To: dhowells@redhat.com, hdanton@sina.com, linux-afs@lists.infradead.org, linux-cachefs-bounces@redhat.com, linux-cachefs@redhat.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this issue to: commit c99c2171fc61476afac0dfb59fb2c447a01fb1e0 Author: David Howells Date: Thu Nov 1 23:07:27 2018 +0000 afs: Use fs_context to pass parameters over automount bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17960d58500000 start commit: 171d4ff7 Merge tag 'mmc-v5.9-rc4-2' of git://git.kernel.or.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=14560d58500000 console output: https://syzkaller.appspot.com/x/log.txt?x=10560d58500000 kernel config: https://syzkaller.appspot.com/x/.config?x=5f4c828c9e3cef97 dashboard link: https://syzkaller.appspot.com/bug?extid=2d0585e5efcd43d113c2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16a33ad3900000 Reported-by: syzbot+2d0585e5efcd43d113c2@syzkaller.appspotmail.com Fixes: c99c2171fc61 ("afs: Use fs_context to pass parameters over automount") For information about bisection process see: https://goo.gl/tpsmEJ#bisection