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: <000000000000cc2582058735d960@google.com> Date: Tue, 23 Apr 2019 10:24:00 -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/eD0xMzQ0ODU0 NzIwMDAwMAoKTm90ZTogdGVzdGluZyBpcyBkb25lIGJ5IGEgcm9ib3QgYW5kIGlzIGJlc3QtZWZm 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,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 C2190C10F03 for ; Tue, 23 Apr 2019 17:24:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9C89E20835 for ; Tue, 23 Apr 2019 17:24:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729234AbfDWRYB (ORCPT ); Tue, 23 Apr 2019 13:24:01 -0400 Received: from mail-it1-f199.google.com ([209.85.166.199]:50908 "EHLO mail-it1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729111AbfDWRYB (ORCPT ); Tue, 23 Apr 2019 13:24:01 -0400 Received: by mail-it1-f199.google.com with SMTP id k8so671226itd.0 for ; Tue, 23 Apr 2019 10:24:01 -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=VkO5Vfxw4veeWkeJxoQ/C7OfI5b7RDTFdrBLqvxB0XQ=; b=SNixXdZhHK6a6QhY7C5AGNAWaMTn4CEdOO2gYGTdqMrjVcKdiXbjoL0uB5MbkTI/+j HDb5MdlSoq6uMNHg2ShqiorEj0Ht2MRFBF8l82Qdg45vvFmUNJ6izRBtvig7xWowXSKH kW2ofYK8CWjaNqCTIZ/YA3BkUUPoPH58IAzCWisdKiOrGaX5tXwJOcWhwUadOZPg9Twl O7StSD8vlp9WGvmGM4XQNHmPUZdQW/t/QMw1+pG7KYON8gviS37RKQeL6zjlv5zg0ngL ZhEwasbLQ6QE7DhS4GbygJxRrErcLtxo80gqQfBU1LUwr8SBnOmSIvQtN+7xZydsGuHf xqag== X-Gm-Message-State: APjAAAVQ03e7U4sP0MbQnP8GDKqPic1OCfsT4rOPeWMpLnUgcGteeZZ1 sz6F4qFJxSUvP3B1SL/3p9vo7li3N+9kk5W35s8IrqZRedNg X-Google-Smtp-Source: APXvYqwcG4FqIkJ2PZJZE6YG9HqGfLHkD4/caAtEYA3OSAL+nUPhgkWSA6UhReP81D1s8O+pQ8lYSaDNP2wtMA+Bokrbku+3CzlK MIME-Version: 1.0 X-Received: by 2002:a24:9197:: with SMTP id i145mr2970973ite.117.1556040240602; Tue, 23 Apr 2019 10:24:00 -0700 (PDT) Date: Tue, 23 Apr 2019 10:24:00 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000cc2582058735d960@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: <20190423172400.1_TqRmfejrEUbeqekyPmtoSbO2joWXyfhW6iZzwoNB8@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=13448547200000 Note: testing is done by a robot and is best-effort only.