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 EBB79236A73; Tue, 17 Jun 2025 16:43:56 +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=1750178637; cv=none; b=Jl+Ly+5mmPsyDE9hExYym7fyILv7uFZpT8biZ9jjxTlMt+V3AvjKFxtunj6+9h+PiJ20yChpvLajzTZzXXC+mEPoClEVf+CQP81y9rZ2zFQ8Hx9QNBwDB5pyJkYKgHJf7W9NtHHu+YS+C8EMvWFVWej+Cgpg8bj3SE5G1r8PonQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750178637; c=relaxed/simple; bh=1xeNF0hrjLqpazJHVC5jqNxKqNwJ2impdaZ7VMXJc6s=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=XtQtWtf/Snqex1Wukg9+Ukv9Voj+slBuMj/kOHPGBX2tVLmWP0Bw07doIElMoOTxlb+EOzxBIlVEYTqT9VKAuGqhHf5RemIm8fLpaPDIFUlVw0QwBEn6c3XrqHwNoI6QqTRRSwvnsftmarvK/L8E4cwWXzUbCCta7MY2F6FrQd8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=VBx9WZUc; 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="VBx9WZUc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5B84FC4CEE3; Tue, 17 Jun 2025 16:43:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1750178636; bh=1xeNF0hrjLqpazJHVC5jqNxKqNwJ2impdaZ7VMXJc6s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VBx9WZUcDfDFi+jdSyrUlmqgq7di137gmZsmKYqwEjrJ8DFGi0Dc9/k3j7OTTxp/2 W4fZIIGGMnkGtymWQMvDsj/lzbHs4Fyxo2JL5nZxeQhT2/Dc1sAKStmJ7Kq6uBwmv0 Kn9L52a2yjS9FrRfJ7TiiF6lmskYLvfzCjgXdmUs= 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 6.15 506/780] dmaengine: ti: Add NULL check in udma_probe() Date: Tue, 17 Jun 2025 17:23:34 +0200 Message-ID: <20250617152512.112722293@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250617152451.485330293@linuxfoundation.org> References: <20250617152451.485330293@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 6.15-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 b6255c0601bb2..aa2dc762140f6 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -5624,7 +5624,8 @@ 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