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 316CD35209C; Tue, 26 Aug 2025 14:40:17 +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=1756219217; cv=none; b=WzFSgVYpx4GsflxOiMIMAwv+JqgbdpNiiDa7dYMAFgWSPDLdYmnGsdSm1+oDLV8v4IWcOqIxMeQIW8DZU+nQPZ1ceNJO9jxCXJaa/ko/pHHXcKIX3EcNEWikOmuubfXktRmiqOXpDW/i14Rn5Lsx8Mud0ihmAZfSQb+aiCkUqXs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756219217; c=relaxed/simple; bh=1nuTbwMsNolkP9/tstjpY82W3o26eBNtsA66I+pPX3o=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=OU5Z+570TX0/s6snndV6NW2unilhNMs1Zu/0tHs6CdeBQIDjCyq0nld3esqggMoMUW64Pn3LrjCLiR2CZ/lUFSio7s4fRi+Ia4fMflsGYjgkZL+L0G2+TZiXqxyf+3ZJo0wWMhdKd39+tX5mO8B+8dedrX7d7T3DqFAUdD0DU/U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=wJHFdOzx; 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="wJHFdOzx" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BA6C5C113CF; Tue, 26 Aug 2025 14:40:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756219217; bh=1nuTbwMsNolkP9/tstjpY82W3o26eBNtsA66I+pPX3o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wJHFdOzx5lrHMVnGzFQgN0oHizRm+53y+TshjcJzm/3TLOungpZ8Ga9GxVGromEg/ zvZOyiXmOvvhuXSdM/zPc9pq1TBgDnH+cZZPRaaagUS0+n94HUCBr+kmo3/UGBbKB9 Z0MO0RFZ+IPaRsWJlx+ogE9G+2ciUT58RUP6ECkk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Thomas Fourier , Miquel Raynal Subject: [PATCH 5.4 298/403] mtd: rawnand: fsmc: Add missing check after DMA map Date: Tue, 26 Aug 2025 13:10:24 +0200 Message-ID: <20250826110915.048233659@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110905.607690791@linuxfoundation.org> References: <20250826110905.607690791@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 5.4-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 @@ -492,6 +492,8 @@ 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;