From patchwork Tue Aug 23 09:37:17 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Iooss X-Patchwork-Id: 9295351 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id AC77260574 for ; Tue, 23 Aug 2016 09:47:39 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9D18B28775 for ; Tue, 23 Aug 2016 09:47:39 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9214F2880E; Tue, 23 Aug 2016 09:47:39 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 22C6028775 for ; Tue, 23 Aug 2016 09:47:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757392AbcHWJrh (ORCPT ); Tue, 23 Aug 2016 05:47:37 -0400 Received: from mx1.polytechnique.org ([129.104.30.34]:43398 "EHLO mx1.polytechnique.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757368AbcHWJrh (ORCPT ); Tue, 23 Aug 2016 05:47:37 -0400 Received: from localhost.localdomain (32.206.133.77.rev.sfr.net [77.133.206.32]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ssl.polytechnique.org (Postfix) with ESMTPSA id 230B15648C8; Tue, 23 Aug 2016 11:38:30 +0200 (CEST) From: Nicolas Iooss To: Arend van Spriel , Franky Lin , Hante Meuleman , linux-wireless@vger.kernel.org, brcm80211-dev-list.pdl@broadcom.com Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Nicolas Iooss Subject: [PATCH v2 1/1] brcmfmac: fix pmksa->bssid usage Date: Tue, 23 Aug 2016 11:37:17 +0200 Message-Id: <20160823093717.1065-1-nicolas.iooss_linux@m4x.org> X-Mailer: git-send-email 2.9.3 In-Reply-To: <7fc849f7-c178-d13e-e9cf-d107a9f73c61@m4x.org> References: <7fc849f7-c178-d13e-e9cf-d107a9f73c61@m4x.org> X-AV-Checked: ClamAV using ClamSMTP at svoboda.polytechnique.org (Tue Aug 23 11:38:30 2016 +0200 (CEST)) Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The struct cfg80211_pmksa defines its bssid field as: const u8 *bssid; contrary to struct brcmf_pmksa, which uses: u8 bssid[ETH_ALEN]; Therefore in brcmf_cfg80211_del_pmksa(), &pmksa->bssid takes the address of this field (of type u8**), not the one of its content (which would be u8*). Remove the & operator to make brcmf_dbg("%pM") and memcmp() behave as expected. This bug have been found using a custom static checker (which checks the usage of %p... attributes at build time). It has been introduced in commit 6c404f34f2bd ("brcmfmac: Cleanup pmksa cache handling code"), which replaced pmksa->bssid by &pmksa->bssid while refactoring the code, without modifying struct cfg80211_pmksa definition. Replace &pmk[i].bssid with pmk[i].bssid too to make the code clearer, this change does not affect the semantic. Fixes: 6c404f34f2bd ("brcmfmac: Cleanup pmksa cache handling code") Cc: stable@vger.kernel.org Signed-off-by: Nicolas Iooss --- drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c index 2628d5e12c64..201a98016142 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c @@ -3884,11 +3884,11 @@ brcmf_cfg80211_del_pmksa(struct wiphy *wiphy, struct net_device *ndev, if (!check_vif_up(ifp->vif)) return -EIO; - brcmf_dbg(CONN, "del_pmksa - PMK bssid = %pM\n", &pmksa->bssid); + brcmf_dbg(CONN, "del_pmksa - PMK bssid = %pM\n", pmksa->bssid); npmk = le32_to_cpu(cfg->pmk_list.npmk); for (i = 0; i < npmk; i++) - if (!memcmp(&pmksa->bssid, &pmk[i].bssid, ETH_ALEN)) + if (!memcmp(pmksa->bssid, pmk[i].bssid, ETH_ALEN)) break; if ((npmk > 0) && (i < npmk)) {