From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 8F79D28E0; Fri, 7 Aug 2026 15:19:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786115998; cv=none; b=pa++AgqLW6MaGmyphKu+7KO6A/V7OTm9k7xYehVReEiJyQs8SPigyElcXKJavFJu2J6VZQbgA6yOAH8tKc6n+3oZmhi9ALb93cMxk3kBVdnoc+45alSpaWhIW+SQORNa/EUMhxDZp1IovG8JlEHLIWG7eMebBw/R3cq0lCVEAn4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786115998; c=relaxed/simple; bh=CZXfMacXbYU2j2VapWPe8enchI4tN/tYYV6rmy/zeZE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=n9m7yzTK44YYIcGpvHT9uh/g3xT2Yw6ltclXwnyX7IROZoUPIV5/+nsFegh/a+NL7GUZoWpMt4rllWpBExVya895+0T5WZw4fPurK5xzBB4RtPRli9noNJCMTZD82oqFlIgCorQQYb0eO34Gfm6KsWEPI/c0uMQJt3O6COpzZOI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=hjvXMlbz; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="hjvXMlbz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D873F1F00A3A; Fri, 7 Aug 2026 15:19:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786115997; bh=eWxgZVD7g1PEI4rhkI3xtadDCX+f+Zgdl4wgkIEmqq4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=hjvXMlbzmW2mRefjWahznaiu07IwjvTqUndE11jx038pxoBtDUDoVLIxlZ2BONuUY VFV8h+yO7KAa9B6j2mVsf6aaQ6SlMPUBVvZZo6GRoL/1ksx7JF3vdptHqhFQK47C97 ifE2e7wFmLVLAg4F+6MFai4tw3kLD0sXg1K2tRrA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Chenguang Zhao , Vadim Fedorenko , "David S. Miller" , Sasha Levin Subject: [PATCH 6.6 077/261] net: sxgbe: check descriptor ring allocation failures Date: Fri, 7 Aug 2026 16:37:14 +0200 Message-ID: <20260807143417.046163498@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260807143415.358597922@linuxfoundation.org> References: <20260807143415.358597922@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Chenguang Zhao [ Upstream commit 51b093a7ba27476e1f639455f005e8d2e75390e4 ] sxgbe_open() ignores the return value of init_dma_desc_rings() and continues to program DMA with invalid ring addresses when allocation fails. Check the return value and disconnect the PHY on failure. Fixes: 1edb9ca69e8a ("net: sxgbe: add basic framework for Samsung 10Gb ethernet driver") Signed-off-by: Chenguang Zhao Reviewed-by: Vadim Fedorenko Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c index fc5750396a3f0..df300493a8d9b 100644 --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c @@ -1080,7 +1080,9 @@ static int sxgbe_open(struct net_device *dev) priv->dma_buf_sz = SXGBE_ALIGN(DMA_BUFFER_SIZE); priv->tx_tc = TC_DEFAULT; priv->rx_tc = TC_DEFAULT; - init_dma_desc_rings(dev); + ret = init_dma_desc_rings(dev); + if (ret) + goto init_phy_error; /* DMA initialization and SW reset */ ret = sxgbe_init_dma_engine(priv); @@ -1189,6 +1191,7 @@ static int sxgbe_open(struct net_device *dev) init_error: free_dma_desc_resources(priv); +init_phy_error: if (dev->phydev) phy_disconnect(dev->phydev); phy_error: -- 2.53.0