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=-2.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, T_DKIMWL_WL_HIGH,USER_AGENT_MUTT autolearn=ham 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 5459CC282CE for ; Tue, 4 Jun 2019 05:40:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2A79324E0D for ; Tue, 4 Jun 2019 05:40:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559626849; bh=Q1IeZXeBEM0M9DgChEpSuZNHDExw0k1MG2qLpwXbwus=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=Anqzdv1nqYkpC1/cSFA21IbPb57j0//YEaX+YYOIbv8qAZRz+c9ECqFJ7mAZP3s5V NZbX5KnrS2AShLRGGUlBBjON3Q0/MB+FxM4XRASILoC4xIQ0UagPqQ+ltCm9pxdikS doXz9E3OZPb782DAXFtd1HOSaaQoH2HcKQ+eIC0U= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726527AbfFDFks (ORCPT ); Tue, 4 Jun 2019 01:40:48 -0400 Received: from mail.kernel.org ([198.145.29.99]:58714 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726427AbfFDFks (ORCPT ); Tue, 4 Jun 2019 01:40:48 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8E3B824E0D; Tue, 4 Jun 2019 05:40:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559626848; bh=Q1IeZXeBEM0M9DgChEpSuZNHDExw0k1MG2qLpwXbwus=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=jVehrERRGWNHFKI+C515p0izJeYKcirY89xNrAbej6LsX0CNiGuq6Svp/DNSSSutb aDpMCTn5T/1RohMkziS28ZtnmEXSAnoIy3Fqnku/X7enjY7umIys3bQjSmpNrwCCmo LCVNMTmGTW9h3q6yXNxgmPBOWhTS1jM+D4rgIQwU= Date: Tue, 4 Jun 2019 07:40:45 +0200 From: Greg KH To: Vladimir Yerilov Cc: linux-usb@vger.kernel.org Subject: Re: kernel NULL pointer dereference, ucsi bug Message-ID: <20190604054045.GD1588@kroah.com> References: <20190603131258.GA10397@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.12.0 (2019-05-25) Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org On Tue, Jun 04, 2019 at 12:58:38AM +1000, Vladimir Yerilov wrote: > No, I can't. > > Unfortunately, this exceeds the scope of my knowledge. I simply don't > know enough to understand your request correctly. What I can is to > compile and try some pre-rc1 5.2 kernel and see how it goes. Also I > managed to trace the source of this problem more precisely. If you can use a pre-rc1 5.2 kernel, that means you are using git, so just look at 'git bisect --help' for how that command works and how you can use it to find the exact problem commit. thanks, greg k-h