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 3EB5743E06B; Mon, 17 Aug 2026 14:35:07 +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=1786977308; cv=none; b=tlltAStB3t5Ji7ijkD4dLo38q6X255pelFCnnRvdy9MNnRDwLD5eZ7ShecB0UjNxNPxpw87G5UBx6MrX2sJIHM46PXhZVSCXBI6Q0hPzwFx1uMPxQoBlIl0Y82xbBmxofnTVHUDfF5Y/GQ8zODEhrjafjhXHni70obraGPBS7Sg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786977308; c=relaxed/simple; bh=LcLcXGuZ6dv/AyMvb4SyN/AYb3Pg4HxlUxVSyAhfQa4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=t+4bs28r7/yv5SciVp7rUHtSah0Gl5AX5drPAjZ/xNXZmPQwmBc7+Sc4LBUDNSQo5dgidEXfiaiI7PmYWy3sck2HmyNH4jErvFH4dKn+WEBMrFcEDTJ1KHj6hwJj2NxSVWenbX+5DcLAgUa4PSsrRGuR/vvQWqQGYNUa7RPJvuw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=OSr4ab7W; 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="OSr4ab7W" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7E2FF1F000E9; Mon, 17 Aug 2026 14:35:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786977307; bh=dGzUD2WZxNntD5quVuuyqYv9fuRcNgThpLmULAqOrVA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=OSr4ab7W5OVI/QdF0poMAT4uy08iomqxm9lhei2X2TsG/vPAgLtaHjmxKtixiuBb+ SIpng0o99wUFER/IiwYbMarbV1z/oP1xEuNGr0AEjYEQYrQHKqw3aHQ0kR07oGgDGr RvIpKhNf/AQB4kv4P7cYWuHQmWCYURFAt/HAGPgo= 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 5.15 285/456] net: sxgbe: check descriptor ring allocation failures Date: Mon, 17 Aug 2026 15:31:15 +0200 Message-ID: <20260817132551.058069482@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260817132539.792407575@linuxfoundation.org> References: <20260817132539.792407575@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 5.15-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 8c3aad051c2e5..f453c546478a0 100644 --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c @@ -1077,7 +1077,9 @@ 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); @@ -1186,6 +1188,7 @@ 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