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 BE01A2F2345; Tue, 17 Jun 2025 16:02:01 +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=1750176121; cv=none; b=rIIcCbHtxo5MM9EMixg+cGALkIuLYrhjRvuy9P8qvcLqhvvUMi1LNwqhCEPsrqOkCrb7ohhxBNqbVpVK983kUFfeZUTvk8jyGIrcv47JSCmog4v4Gk5zTggiAfAK7UJEN30ujIw2qoHeF/u3rkPKDrJ4bDq1R97Ho4LbGEjw+Wc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750176121; c=relaxed/simple; bh=VSR8hmKOB2FbtrA2zKt9pXG9dvoB1IIoBXdl/1ODi4I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=r8bQ1B9BwsbOZZsTy92hRyMJMRLEXKAp/udWcUqvfn+YCbXMEJzejKJ9NFOGlmum/rGP97tXrhLTQSEM+h+8ddmChgPh0sqgiJiPLaeot7rlwBdiIj9nGlQ2FoX2A6W5KnGwYsAzN5zDsN/txOMq6jZvYun0s7Ij0jbcONgv844= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=k8bQbQDI; 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="k8bQbQDI" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4AC99C4CEE3; Tue, 17 Jun 2025 16:02:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1750176121; bh=VSR8hmKOB2FbtrA2zKt9pXG9dvoB1IIoBXdl/1ODi4I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=k8bQbQDIbJvDlI007MZCMvBspyHGegTq0Nf7GaTlyArxPey2/soLKxvIfZ44RjwM7 O4nz265eWp+XHSEkV6pLQME7JefF2FjhUEcGUTkLOk0PC/qiiacTE+9TlLJ2nQcCtT JOqmDaQPsHCTaGkoFIa8XH9y1J0pP25Jj6SMOg7A= 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 6.6 227/356] dmaengine: ti: Add NULL check in udma_probe() Date: Tue, 17 Jun 2025 17:25:42 +0200 Message-ID: <20250617152347.337675771@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250617152338.212798615@linuxfoundation.org> References: <20250617152338.212798615@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 6.6-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 418e1774af1e5..d99cf81358c54 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -5537,7 +5537,8 @@ 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