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 5584230AAD2; Tue, 26 Aug 2025 13:28:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756214883; cv=none; b=iSs+FQiwJyhivxOcFD/Wxpgek8wU0iyF4uVeXLhTCMGg6iRL95BoM4IvySURyRxUlQetFGAfnvBnq5MjXeg8w+cSTUUnVmkAZKANifz/WVgEyXINggZ2TXP2zoHW2GCohzaJ6VlYdyRapm2LFM+UFsqz+S9tLZdr29jsiLQwYXU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756214883; c=relaxed/simple; bh=gSWwHx5SEE8Ibt8xihQVgq1NLRDunj+W+yF82teH1Xc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=UJFZOOk10LnuuE1JX/bf0pr8SIQlL7wfbDcctNkTwT10AFf5x7BHpmMCakBBCXpDiLC7gRnn3idkOZzbcyMXu4wYTh7zCdYjyFnxzG2ouIFwgsQc6IT+kWm1rEeHQtgEHl6XCtXLHBHsMP/sSqkhckywoyxfjjqUvamuMGtT1kg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=X9i+Xrs8; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="X9i+Xrs8" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 91E10C4CEF1; Tue, 26 Aug 2025 13:28:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756214882; bh=gSWwHx5SEE8Ibt8xihQVgq1NLRDunj+W+yF82teH1Xc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=X9i+Xrs8DW1za+0AXMYLw2QXYUF5j3Qgo0Pozb79TQlVT4MTqzRE9dP4VWA6fK4Pu QSlvSEj0yFMXwixj3WxLFDcV5nwze+5GfCKOsEPejNnIFSjWbAvcvEom/eijEJbU39 f2cAVI+aeNDTlGZkH3rfM87YIqKvbiIkNjIkgowo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Thomas Fourier , Miquel Raynal Subject: [PATCH 6.1 305/482] mtd: rawnand: fsmc: Add missing check after DMA map Date: Tue, 26 Aug 2025 13:09:18 +0200 Message-ID: <20250826110938.334824391@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110930.769259449@linuxfoundation.org> References: <20250826110930.769259449@linuxfoundation.org> User-Agent: quilt/0.68 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 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Thomas Fourier commit 6c4dab38431fee3d39a841d66ba6f2890b31b005 upstream. The DMA map functions can fail and should be tested for errors. Fixes: 4774fb0a48aa ("mtd: nand/fsmc: Add DMA support") Cc: stable@vger.kernel.org Signed-off-by: Thomas Fourier Rule: add Link: https://lore.kernel.org/stable/20250702065806.20983-2-fourier.thomas%40gmail.com Signed-off-by: Miquel Raynal Signed-off-by: Greg Kroah-Hartman --- drivers/mtd/nand/raw/fsmc_nand.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/mtd/nand/raw/fsmc_nand.c +++ b/drivers/mtd/nand/raw/fsmc_nand.c @@ -503,6 +503,8 @@ static int dma_xfer(struct fsmc_nand_dat dma_dev = chan->device; dma_addr = dma_map_single(dma_dev->dev, buffer, len, direction); + if (dma_mapping_error(dma_dev->dev, dma_addr)) + return -EINVAL; if (direction == DMA_TO_DEVICE) { dma_src = dma_addr;