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 600FCC10F00 for ; Thu, 21 Mar 2019 17:30:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2C0B621874 for ; Thu, 21 Mar 2019 17:30:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728513AbfCURaB (ORCPT ); Thu, 21 Mar 2019 13:30:01 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:42740 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727958AbfCURaB (ORCPT ); Thu, 21 Mar 2019 13:30:01 -0400 Received: by mail-io1-f70.google.com with SMTP id i1so5723941ioq.9 for ; Thu, 21 Mar 2019 10:30:00 -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=fLQGdQSSgHknyy/V+VRgiv7MKw96VhP0gMOndDdmz54=; b=fvs9h+H9HRNJy5sxrCnd+fZEWfOeU8cBJgkkYZNn6pfNYFSRjUaC90DNfRAlqew3SV +0d/1BJt6XFPhsGo0L/Dq0MH8pQ3mNcnuKIVe9HREMZypPjfNIdpl4qiQ6iSnMdl3K9Z Uy6ouXLGWNCCZHQFqgMPblx+XRmaKL5RDudcrPHpmVDYx81nzMWyNHzm35q9LnOhQSD7 UKMxwqh+eeaa4USrMlHribzX6Sv34hdqHGcRbKWZANt/TL+5OOnhuWJSDFm7mOxWf6ux f8RIk0dtqGLG7t4YyOVnFMpk1qKiM0ONqD3kvJSvOVU+JhilMLyZfdwyv8lg2hakdoMH H3Ng== X-Gm-Message-State: APjAAAUoXoxot7KJwHxqYMWGnFCFoNPYz9N676VjaQ5ljjwZ3pc+/3sF c94eEa1G6BWzh9iKb2ArSYEe7WQQR0sgxOGua4xr2YvXCvyE X-Google-Smtp-Source: APXvYqzypj0cLkZAe6ywra+tvAN6+dxA3Nmkam8kTumR99hdy+/cb70Mef6MK220NE7gIEXRtPP046FqMRCL6SISXTyrEiM2xBLn MIME-Version: 1.0 X-Received: by 2002:a6b:8d87:: with SMTP id p129mr3674003iod.10.1553189400392; Thu, 21 Mar 2019 10:30:00 -0700 (PDT) Date: Thu, 21 Mar 2019 10:30:00 -0700 In-Reply-To: <0000000000009a01370582c6772a@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000007ab8ab05849e1647@google.com> Subject: Re: INFO: rcu detected stall in ext4_file_write_iter From: syzbot To: acme@kernel.org, adilger.kernel@dilger.ca, dvyukov@google.com, linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, syzkaller-bugs@googlegroups.com, tytso@mit.edu Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org Bisection is inconclusive: the bug happens on the oldest tested release. bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17b1becf200000 start commit: [unknown git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=1471becf200000 console output: https://syzkaller.appspot.com/x/log.txt?x=1071becf200000 dashboard link: https://syzkaller.appspot.com/bug?extid=7d19c5fe6a3f1161abb7 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=103908f8c00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=105e5cd0c00000 For information about bisection process see: https://goo.gl/tpsmEJ#bisection