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 D86902472AF; Mon, 23 Jun 2025 13:43:40 +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=1750686220; cv=none; b=VPxo8LjbtggWEJnXjuvOut+SfygZRLDrKFlOwdB8Syj66BS+cv9Q6RXvMDxcOmEZYGfNToxAomAgTG75ovpmIZyiJAVLpmElEOIWAur7wn4CJc7ifulnrBQoFNqtjwx2eM5wkUZ3MYqxQGY0JWWGV4J9llodEF/uiZvP8Fy4WvA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750686220; c=relaxed/simple; bh=2zmzCXy9avrhcvjaObcILQjGUTTuLjFnozqzViL3pLM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=aR0jKKftclQOnY52gY1kiB3XwBJGeA6Asx8KlIPQQlDLDGqVQiUHXZx0FTXWNx0OdYXFVqbjLw1h+L+suQvHdseKswdn2BfCPqXRyYQ3yYX7j8hijC2SX0nD0LDSwt3HE3m9us7nsuFZ/TF3xvE36/mVcBUbaTgMlrnL8Mb8yFQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=kKGl4zTy; 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="kKGl4zTy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 63C05C4CEEA; Mon, 23 Jun 2025 13:43:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1750686220; bh=2zmzCXy9avrhcvjaObcILQjGUTTuLjFnozqzViL3pLM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kKGl4zTyf0LSrBTvlhNZu5yeoai4PJzmk1tiL8NDolWiFdcDfSVApHtLxy4JPXp+H omrdwRCQ0l1o0XUXBdvpQIPL2CgD7fvNoSAE5wxqhROWj9o6o/xB6HwtUAQJOijlMg kaGmPqtirWM6uQXPWKTT7dIBLfLn8iVVxqMyhsxQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Henry Martin , Nathan Lynch , Peter Ujfalusi , Vinod Koul , Sasha Levin Subject: [PATCH 5.15 105/411] dmaengine: ti: Add NULL check in udma_probe() Date: Mon, 23 Jun 2025 15:04:09 +0200 Message-ID: <20250623130636.157280162@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250623130632.993849527@linuxfoundation.org> References: <20250623130632.993849527@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org 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: Henry Martin [ Upstream commit fd447415e74bccd7362f760d4ea727f8e1ebfe91 ] devm_kasprintf() returns NULL when memory allocation fails. Currently, udma_probe() does not check for this case, which results in a NULL pointer dereference. Add NULL check after devm_kasprintf() to prevent this issue. Fixes: 25dcb5dd7b7c ("dmaengine: ti: New driver for K3 UDMA") Signed-off-by: Henry Martin Reviewed-by: Nathan Lynch Acked-by: Peter Ujfalusi Link: https://lore.kernel.org/r/20250402023900.43440-1-bsdhenrymartin@gmail.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- drivers/dma/ti/k3-udma.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index 1ca552a324778..ce5875a00f28d 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -5425,7 +5425,8 @@ static int udma_probe(struct platform_device *pdev) uc->config.dir = DMA_MEM_TO_MEM; uc->name = devm_kasprintf(dev, GFP_KERNEL, "%s chan%d", dev_name(dev), i); - + if (!uc->name) + return -ENOMEM; vchan_init(&uc->vc, &ud->ddev); /* Use custom vchan completion handling */ tasklet_setup(&uc->vc.task, udma_vchan_complete); -- 2.39.5