From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:40788 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726395AbeI0CfL (ORCPT ); Wed, 26 Sep 2018 22:35:11 -0400 Date: Wed, 26 Sep 2018 22:20:29 +0200 From: Greg KH To: Steve Wise Cc: stable@vger.kernel.org Subject: Re: [iw_cxgb4 linux-4.14.y] iw_cxgb4: only allow 1 flush on user qps Message-ID: <20180926202029.GA23881@kroah.com> References: <20180924182132.BDF79227B1@smtp.opengridcomputing.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180924182132.BDF79227B1@smtp.opengridcomputing.com> Sender: stable-owner@vger.kernel.org List-ID: On Mon, Sep 24, 2018 at 10:38:52AM -0700, Steve Wise wrote: > commit 308aa2b8f7b7db3332a7d41099fd37851fb793b2 upstream > > Once the qp has been flushed, it cannot be flushed again. The user qp > flush logic wasn't enforcing it however. The bug can cause > touch-after-free crashes like: I've applied the 4.14 and 4.18 patch. What about 4.9.y? thanks, greg k-h