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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 E831EC282E1 for ; Wed, 24 Apr 2019 14:44:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AB385218FC for ; Wed, 24 Apr 2019 14:44:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1556117089; bh=fgccKmQ9BVaJKGUysJSm3fpfqpRdSj/kmCykiZk57bo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=maJdA5FjL8Hf3yhU7w6y56iMCPwF6UDufia+4MHQICbJnirlHqux8vuvZtfgCUIas NKXYXIelUFDO7rOyhlja1K0UyuhJKg783VMVl1G803z4hl9LQUPoumiAj2CseXYobC winK2bNW66DPq7sOM56Hgsfu8LCd3C0T0xIjZtwE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732028AbfDXOoo (ORCPT ); Wed, 24 Apr 2019 10:44:44 -0400 Received: from mail.kernel.org ([198.145.29.99]:41976 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731706AbfDXOjd (ORCPT ); Wed, 24 Apr 2019 10:39:33 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4B93D21904; Wed, 24 Apr 2019 14:39:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1556116772; bh=fgccKmQ9BVaJKGUysJSm3fpfqpRdSj/kmCykiZk57bo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=x9nLawhOad7huKMAKuP3hb8Djbl7qAbJkZlaRaOHH38TP+YXO4uDVwLFLlXQHbKKr cqNdJha67n7aWlDRry073yW9x8cJ1WK5NTq9mEC0YLYcGs/13A+ST5HSMl3dahi45l y1tb4bea0Dvv4MH1cGqVGFRDezDBLe6Zkp8+OKWc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Anders Roxell , Sven Eckelmann , Simon Wunderlich , Sasha Levin , netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 09/52] batman-adv: fix warning in function batadv_v_elp_get_throughput Date: Wed, 24 Apr 2019 10:38:27 -0400 Message-Id: <20190424143911.28890-9-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190424143911.28890-1-sashal@kernel.org> References: <20190424143911.28890-1-sashal@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Anders Roxell [ Upstream commit ca8c3b922e7032aff6cc3fd05548f4df1f3df90e ] When CONFIG_CFG80211 isn't enabled the compiler correcly warns about 'sinfo.pertid' may be unused. It can also happen for other error conditions that it not warn about. net/batman-adv/bat_v_elp.c: In function ‘batadv_v_elp_get_throughput.isra.0’: include/net/cfg80211.h:6370:13: warning: ‘sinfo.pertid’ may be used uninitialized in this function [-Wmaybe-uninitialized] kfree(sinfo->pertid); ~~~~~^~~~~~~~ Rework so that we only release '&sinfo' if cfg80211_get_station returns zero. Fixes: 7d652669b61d ("batman-adv: release station info tidstats") Signed-off-by: Anders Roxell Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich Signed-off-by: Sasha Levin --- net/batman-adv/bat_v_elp.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/net/batman-adv/bat_v_elp.c b/net/batman-adv/bat_v_elp.c index ef0dec20c7d8..5da183b2f4c9 100644 --- a/net/batman-adv/bat_v_elp.c +++ b/net/batman-adv/bat_v_elp.c @@ -104,8 +104,10 @@ static u32 batadv_v_elp_get_throughput(struct batadv_hardif_neigh_node *neigh) ret = cfg80211_get_station(real_netdev, neigh->addr, &sinfo); - /* free the TID stats immediately */ - cfg80211_sinfo_release_content(&sinfo); + if (!ret) { + /* free the TID stats immediately */ + cfg80211_sinfo_release_content(&sinfo); + } dev_put(real_netdev); if (ret == -ENOENT) { -- 2.19.1