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=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 4F4EDC43381 for ; Mon, 25 Mar 2019 04:52:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2685B2087E for ; Mon, 25 Mar 2019 04:52:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726214AbfCYEwD (ORCPT ); Mon, 25 Mar 2019 00:52:03 -0400 Received: from mail-it1-f200.google.com ([209.85.166.200]:42564 "EHLO mail-it1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725810AbfCYEwC (ORCPT ); Mon, 25 Mar 2019 00:52:02 -0400 Received: by mail-it1-f200.google.com with SMTP id r186so2327154ita.7 for ; Sun, 24 Mar 2019 21:52:01 -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=WcXVUAK+lZFpkdWJr/seSTlJnJy+pQhGCMX6I+mL6ls=; b=ddbdvXZwLtzxFhfA8iVu9Qi63B4oqHW57gDJ4gdk4nGMGHiU7XpQYMV9b9CdoBxjjH rOgYtKvaA6ei+6u0V8sRlMEjECxZ1IzHJ5Enn2OXQfVVJI2R+q6fCGaLRof1r9cJYIQm d7FUSd2hSSMWB7jodPFiXpn5oUPP47lOtLAUE61p2Z3t2vwIyDhdV3Tkdl4/TvymT5jA GQkgGKDFqWsrzSI/eyvbS0uSsmysghLqyG+93mpz9PPvk7uxeg/oGDHjtsf6z6qAp5yX sETlCjo3RYjuyl+stMKrsPrLTOv5+NwawYkvz0HJO+vqprDYWDTjSxMec8dLSLazsYfy PElA== X-Gm-Message-State: APjAAAVKGtCqUSCYm15I/4iO8QHa2fR4gU25Pfgu/Y4LUQE+RuP4m3BH /A5SBN1TLymOS792S2goN432GD79jVJwY9VbU0UsolxOTsy2 X-Google-Smtp-Source: APXvYqx9Y9m/MMu7uF4zVR2fBYaG84rNBR13pG7qYtp/8Mf34yY1qlXsI+PS6RDfj2TmfhKwzXmzn43jK4PPH+fQ4csjYPtBFEBC MIME-Version: 1.0 X-Received: by 2002:a6b:d913:: with SMTP id r19mr7700493ioc.76.1553489521291; Sun, 24 Mar 2019 21:52:01 -0700 (PDT) Date: Sun, 24 Mar 2019 21:52:01 -0700 In-Reply-To: <000000000000663620057bbd0e9d@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000143bcd0584e3f7ea@google.com> Subject: Re: KASAN: use-after-free Read in link_path_walk From: syzbot To: ast@kernel.org, daniel@iogearbox.net, davem@davemloft.net, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org syzbot has bisected this bug to: commit 0f98621bef5d2b7ad41f6595899660af344f5016 Author: Daniel Borkmann Date: Sat Oct 29 00:30:46 2016 +0000 bpf, inode: add support for symlinks and fix mtime/ctime bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13c347a3200000 start commit: ef78e5ec ia64: export node_distance function git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=102347a3200000 console output: https://syzkaller.appspot.com/x/log.txt?x=17c347a3200000 kernel config: https://syzkaller.appspot.com/x/.config?x=c94f9f0c0363db4b dashboard link: https://syzkaller.appspot.com/bug?extid=fb731ca573367b7f6564 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11116225400000 Reported-by: syzbot+fb731ca573367b7f6564@syzkaller.appspotmail.com Fixes: 0f98621bef5d ("bpf, inode: add support for symlinks and fix mtime/ctime") For information about bisection process see: https://goo.gl/tpsmEJ#bisection