From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A602179C0 for ; Wed, 30 Nov 2022 18:43:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F2BA2C433D6; Wed, 30 Nov 2022 18:43:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1669833802; bh=q/BJ+//GJyKpfHhVMqvr+v+pGDKuEWPiV8o1bGKTibg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=s9dslespamM758xZQjFZWmdmyl5SUFbr0i5MaZcoBdcIhK3wvgwjTBDoPJBHGu3EO iK23DeXA3lsnbByRWjIXBVoJv4NXsd8U5cFccHSC73hSJY2Rqp63fC3EBbVyw6OX4Z ZEukUIVdX09m9YfSXVjM4WrGbBYK0GvZxP8xczgY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, taozhang , Johannes Berg , Sasha Levin Subject: [PATCH 6.0 004/289] wifi: mac80211: fix memory free error when registering wiphy fail Date: Wed, 30 Nov 2022 19:19:49 +0100 Message-Id: <20221130180544.214601340@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221130180544.105550592@linuxfoundation.org> References: <20221130180544.105550592@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: taozhang [ Upstream commit 50b2e8711462409cd368c41067405aa446dfa2af ] ieee80211_register_hw free the allocated cipher suites when registering wiphy fail, and ieee80211_free_hw will re-free it. set wiphy_ciphers_allocated to false after freeing allocated cipher suites. Signed-off-by: taozhang Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- net/mac80211/main.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 5b1c47ed0cc0..87e24bba4c67 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -1437,8 +1437,10 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) ieee80211_led_exit(local); destroy_workqueue(local->workqueue); fail_workqueue: - if (local->wiphy_ciphers_allocated) + if (local->wiphy_ciphers_allocated) { kfree(local->hw.wiphy->cipher_suites); + local->wiphy_ciphers_allocated = false; + } kfree(local->int_scan_req); return result; } @@ -1506,8 +1508,10 @@ void ieee80211_free_hw(struct ieee80211_hw *hw) mutex_destroy(&local->iflist_mtx); mutex_destroy(&local->mtx); - if (local->wiphy_ciphers_allocated) + if (local->wiphy_ciphers_allocated) { kfree(local->hw.wiphy->cipher_suites); + local->wiphy_ciphers_allocated = false; + } idr_for_each(&local->ack_status_frames, ieee80211_free_ack_frame, NULL); -- 2.35.1