From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johannes Berg Subject: Re: Suspicious RCU from iwlwifi driver Date: Fri, 11 Dec 2015 09:00:34 +0100 Message-ID: <1449820834.2324.0.camel@sipsolutions.net> References: <566A0929.2090706@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Intel Linux Wireless , netdev@vger.kernel.org, Linux Kernel Mailing List To: Laura Abbott , Emmanuel Grumbach , Avri Altman Return-path: Received: from s3.sipsolutions.net ([5.9.151.49]:59220 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752775AbbLKIAl (ORCPT ); Fri, 11 Dec 2015 03:00:41 -0500 In-Reply-To: <566A0929.2090706@redhat.com> Sender: netdev-owner@vger.kernel.org List-ID: Hi Laura, > =C2=A0 drivers/net/wireless/intel/iwlwifi/mvm/sta.c:1226 suspicious > rcu_dereference_protected() usage! > If I revert 9513c5e18a0dc55a1fc9c890715098ba2315830b > (iwlwifi: mvm: Avoid dereferencing sta if it was already flushed) > The warning goes away. Known issue? Thanks for the report - I at least hadn't seen this (or a fix for it) yet, we'll take a look. johannes