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 65A92BA45 for ; Tue, 7 Mar 2023 18:05:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C90B6C433D2; Tue, 7 Mar 2023 18:05:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1678212316; bh=2kBylMgMgKoqEmKniVaPExKAEBUFzeLAHLD3hLpmDWo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PDO2NE9viIDYnZSK+qTPPrJASWIDNmlbTSdRRY++r0QAWd3RUXopuaJ3MUpBBHegp HgEB3m6kKNIp6NEPE3e8rXurfWya/7IE/vaE0nt9Jr46Klfh/2N1TBY+jFgUfszlnT BOfKlfq0JAWRoA2iXFXFUTxWJe60LxRlZYBOPFZU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Deren Wu , Felix Fietkau , Sasha Levin Subject: [PATCH 6.1 116/885] wifi: mt76: fix coverity uninit_use_in_call in mt76_connac2_reverse_frag0_hdr_trans() Date: Tue, 7 Mar 2023 17:50:50 +0100 Message-Id: <20230307170006.911846223@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230307170001.594919529@linuxfoundation.org> References: <20230307170001.594919529@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: Deren Wu [ Upstream commit 0ffcb2a68b15bd63d5555a923ae7dfe8bfdb14a7 ] The default case for frame_contorl is invalid. We should always assign addr3 of this frame properly. Coverity error message: if (ieee80211_has_a4(hdr.frame_control)) (19) Event uninit_use_in_call: Using uninitialized value "hdr". Field "hdr.addr3" is uninitialized when calling "memcpy". memcpy(skb_push(skb, sizeof(hdr)), &hdr, sizeof(hdr)); else memcpy(skb_push(skb, sizeof(hdr) - 6), &hdr, sizeof(hdr) - 6); Fixes: 0880d40871d1 ("mt76: connac: move mt76_connac2_reverse_frag0_hdr_trans in mt76-connac module") Signed-off-by: Deren Wu Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin --- drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c b/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c index 34ac3d81a5102..46ede1b72bbee 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c @@ -921,7 +921,7 @@ int mt76_connac2_reverse_frag0_hdr_trans(struct ieee80211_vif *vif, ether_addr_copy(hdr.addr4, eth_hdr->h_source); break; default: - break; + return -EINVAL; } skb_pull(skb, hdr_offset + sizeof(struct ethhdr) - 2); -- 2.39.2