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 01FDBBA49 for ; Tue, 7 Mar 2023 18:47:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 57851C433D2; Tue, 7 Mar 2023 18:47:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1678214876; bh=eMY9JpNRiXmRbsWEZxavKJpM+sgPfTsdiqK2KeUxxTQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pROPo7DCFEGJV2PR7WeGgn9kY98N7aj5jEAWRboec4hhpn9NRMIC7807TABZPa2EY 4bOoQJx3PrMv6TGgP9ixlEXcxT30ltpg8WmTh0a4RIduNAAHJ13FEb+xwwxBDnYpEE j49Zq49DC6KIpkO1WDflBviNp/SmqWp3lTZq4Ll4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Zhang Changzhong , Arend van Spriel , Kalle Valo , Sasha Levin Subject: [PATCH 5.15 078/567] wifi: brcmfmac: fix potential memory leak in brcmf_netdev_start_xmit() Date: Tue, 7 Mar 2023 17:56:54 +0100 Message-Id: <20230307165909.270615505@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230307165905.838066027@linuxfoundation.org> References: <20230307165905.838066027@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: Zhang Changzhong [ Upstream commit 212fde3fe76e962598ce1d47b97cc78afdfc71b3 ] The brcmf_netdev_start_xmit() returns NETDEV_TX_OK without freeing skb in case of pskb_expand_head() fails, add dev_kfree_skb() to fix it. Compile tested only. Fixes: 270a6c1f65fe ("brcmfmac: rework headroom check in .start_xmit()") Signed-off-by: Zhang Changzhong Reviewed-by: Arend van Spriel Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/1668684782-47422-1-git-send-email-zhangchangzhong@huawei.com Signed-off-by: Sasha Levin --- drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c index e5bae62245215..f03fc6f1f8333 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c @@ -338,6 +338,7 @@ static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb, bphy_err(drvr, "%s: failed to expand headroom\n", brcmf_ifname(ifp)); atomic_inc(&drvr->bus_if->stats.pktcow_failed); + dev_kfree_skb(skb); goto done; } } -- 2.39.2