From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: general protection fault in __dev_printk From: syzbot Message-Id: <000000000000dca2f3058734c255@google.com> Date: Tue, 23 Apr 2019 09:06:00 -0700 To: andreyknvl@google.com, dvyukov@google.com, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, rafael@kernel.org, stern@rowland.harvard.edu, syzkaller-bugs@googlegroups.com List-ID: SGVsbG8sCgpzeXpib3QgaGFzIHRlc3RlZCB0aGUgcHJvcG9zZWQgcGF0Y2ggYW5kIHRoZSByZXBy b2R1Y2VyIGRpZCBub3QgdHJpZ2dlciAgCmNyYXNoOgoKUmVwb3J0ZWQtYW5kLXRlc3RlZC1ieTog IApzeXpib3QrMmViOTEyMTY3OGJkYjM2ZTZkNTdAc3l6a2FsbGVyLmFwcHNwb3RtYWlsLmNvbQoK VGVzdGVkIG9uOgoKY29tbWl0OiAgICAgICAgIGQzNGY5NTE5IHVzYi1mdXp6ZXI6IG1haW4gdXNi IGdhZGdldCBmdXp6ZXIgZHJpdmVyCmdpdCB0cmVlOiAgICAgICBodHRwczovL2dpdGh1Yi5jb20v Z29vZ2xlL2thc2FuL3RyZWUvdXNiLWZ1enplcgprZXJuZWwgY29uZmlnOiAgaHR0cHM6Ly9zeXpr YWxsZXIuYXBwc3BvdC5jb20veC8uY29uZmlnP3g9YzczZDFiYjVhZWFlYWUyMApjb21waWxlcjog ICAgICAgZ2NjIChHQ0MpIDkuMC4wIDIwMTgxMjMxIChleHBlcmltZW50YWwpCnBhdGNoOiAgICAg ICAgICBodHRwczovL3N5emthbGxlci5hcHBzcG90LmNvbS94L3BhdGNoLmRpZmY/eD0xNTkwOTc4 MGEwMDAwMAoKTm90ZTogdGVzdGluZyBpcyBkb25lIGJ5IGEgcm9ib3QgYW5kIGlzIGJlc3QtZWZm b3J0IG9ubHkuCg== 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=-5.6 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_PASS 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 C9B97C10F03 for ; Tue, 23 Apr 2019 16:06:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A40FB20811 for ; Tue, 23 Apr 2019 16:06:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728559AbfDWQGB (ORCPT ); Tue, 23 Apr 2019 12:06:01 -0400 Received: from mail-io1-f71.google.com ([209.85.166.71]:54322 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727666AbfDWQGB (ORCPT ); Tue, 23 Apr 2019 12:06:01 -0400 Received: by mail-io1-f71.google.com with SMTP id c17so13359869iom.21 for ; Tue, 23 Apr 2019 09:06:01 -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=oQ+5RDeXMVUx96sriKP1rnJUCvzHQET4JfCD0yTqnK4=; b=Q2z3czbkDGx5oB414fxupwchNqITonrIV946QveVWAofkOsukTVW9ZTi/ihk9KWOtm 9yQf/aEKFDQSx1rD6yCqj+7oNUGyuy8wNLSpYCDF1G/wco9cYfb2ucKt8BvV0v3wxiwC 1AbLap58hW6uTgaBR73oiY1V5Q1IK1cSxy4OiElzPTPiW6HmmMxRad+drRt3jh74KnzF pKM26dhnevrGsW3ZmPg3/FKBeW3c84djLXgQAnocLlcA2KjAlMkJs5kpNIsTAJbawb0D /OOv7w2VvYAjKgXHC3nnLd1FliKdgyGGas+5DWoQJpQyt2SYrRG2b5Q8AoHsWJlT6Lw+ p61w== X-Gm-Message-State: APjAAAWfG7wCbPchIyosprK99upe5xlOKICX6zLZ4n+JiBYFpnNxZcgy 0R78KDHudNQntLo4fcMamXrVRsr3f5T8dRbDWJtuOEJqhVxz X-Google-Smtp-Source: APXvYqyO1a8WQjH8I/ukNixhpBGC4KoWjNMgCAiNTPMHTKh/n7na1JXv/Ne2ae0IIThU+LyHskWfggdNwLOlse9EQTS9vIlh+E4o MIME-Version: 1.0 X-Received: by 2002:a05:6602:9:: with SMTP id b9mr10562226ioa.133.1556035560840; Tue, 23 Apr 2019 09:06:00 -0700 (PDT) Date: Tue, 23 Apr 2019 09:06:00 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000dca2f3058734c255@google.com> Subject: Re: general protection fault in __dev_printk From: syzbot To: andreyknvl@google.com, dvyukov@google.com, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, rafael@kernel.org, stern@rowland.harvard.edu, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; delsp="yes"; format="flowed" Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Message-ID: <20190423160600.64S8VkuFZfBVt64Un39CBkp3pBseZ1syCvNbjbBBj-c@z> Hello, syzbot has tested the proposed patch and the reproducer did not trigger crash: Reported-and-tested-by: syzbot+2eb9121678bdb36e6d57@syzkaller.appspotmail.com Tested on: commit: d34f9519 usb-fuzzer: main usb gadget fuzzer driver git tree: https://github.com/google/kasan/tree/usb-fuzzer kernel config: https://syzkaller.appspot.com/x/.config?x=c73d1bb5aeaeae20 compiler: gcc (GCC) 9.0.0 20181231 (experimental) patch: https://syzkaller.appspot.com/x/patch.diff?x=15909780a00000 Note: testing is done by a robot and is best-effort only.