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=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,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 7970FC433FF for ; Mon, 12 Aug 2019 12:31:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 59C7621874 for ; Mon, 12 Aug 2019 12:31:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728691AbfHLMbB (ORCPT ); Mon, 12 Aug 2019 08:31:01 -0400 Received: from mail-ot1-f70.google.com ([209.85.210.70]:48845 "EHLO mail-ot1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728239AbfHLMbB (ORCPT ); Mon, 12 Aug 2019 08:31:01 -0400 Received: by mail-ot1-f70.google.com with SMTP id b4so84106875otf.15 for ; Mon, 12 Aug 2019 05:31:01 -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=uTu/C5kEoXRr3czNQDVPHfrZDcI2hFsg6TBFRhIIG1U=; b=tiRPKQ3YNBgk1kD6ViUOuOjDOQV1sjUJmkubSPZy5Ibt4myfuJ88VkxMBznvUZwGja 9JybOZfp119cD4a/G2Kva0OsNA4duuvngNd4cf+tQx8NXEc/WT9JhnFnk/jnOpu42m8d n7e2AjCwxayNNRSy9ZcWjpdyPD8hPcesS57MR+Ts/STL1MvVGF9+Ue+T/oyNeOUkX8hf fG/I6a2K5VL8PAmmEC73ImkBbMT/UaQ2a9csUKu4SCD7NMEhugxRe1pNeMNrM550BX8y ElJGoUalfLWImSzrCrTN+RCDcL4ui/JNAMh4uuIvLjz5RaPf9VCZ0ukYbz73cj5dGJnH toIA== X-Gm-Message-State: APjAAAWqUL9mNEwSyl43tr9vu0MdwIc19EnpAPxWtgzAqEd+1VHrpmDX rxjPPpUnLWvKwoW+aA3lu9PvwisSIi3LWyEg6LGwAYVKYCtI X-Google-Smtp-Source: APXvYqw/6HtWEBrsF6QXzaiwhcykXVdkAZLMzV8QABcMryQlBavKHtHvOvwHYYvMX1cWcDA4JpW0SWpCnxo7meykgzHSvTS2TVUx MIME-Version: 1.0 X-Received: by 2002:a5e:d507:: with SMTP id e7mr21142454iom.284.1565613060687; Mon, 12 Aug 2019 05:31:00 -0700 (PDT) Date: Mon, 12 Aug 2019 05:31:00 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000569062058feab2e2@google.com> Subject: Re: possible deadlock in usb_deregister_dev From: syzbot To: andreyknvl@google.com, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, oneukum@suse.de, stern@rowland.harvard.edu, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Hello, syzbot has tested the proposed patch and the reproducer did not trigger crash: Reported-and-tested-by: syzbot+a64a382964bf6c71a9c0@syzkaller.appspotmail.com Tested on: commit: e96407b4 usb-fuzzer: main usb gadget fuzzer driver git tree: https://github.com/google/kasan.git kernel config: https://syzkaller.appspot.com/x/.config?x=cfa2c18fb6a8068e compiler: gcc (GCC) 9.0.0 20181231 (experimental) patch: https://syzkaller.appspot.com/x/patch.diff?x=16a8a38c600000 Note: testing is done by a robot and is best-effort only.