linux-kernel - [PATCH] sound/soc/sof:Use kmalloc

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Message-ID: <20250923142513.11005-1-hariconscious@gmail.com>
Date: Tue, 23 Sep 2025 19:55:13 +0530
From: hariconscious@...il.com
To: lgirdwood@...il.com,
	peter.ujfalusi@...ux.intel.com,
	yung-chuan.liao@...ux.intel.com,
	ranjani.sridharan@...ux.intel.com,
	daniel.baluta@....com,
	kai.vehmanen@...ux.intel.com,
	pierre-louis.bossart@...ux.dev
Cc: shuah@...nel.org,
	broonie@...nel.org,
	perex@...ex.cz,
	tiwai@...e.com,
	sound-open-firmware@...a-project.org,
	linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	HariKrishna Sagala <hariconscious@...il.com>
Subject: [PATCH] sound/soc/sof:Use kmalloc_array instead of kmalloc

From: HariKrishna Sagala <hariconscious@...il.com>

Documentation/process/deprecated.rst recommends to avoid the use of
kmalloc with dynamic size calculations due to the risk of them
overflowing. This could lead to values wrapping around and a
smaller allocation being made than the caller was expecting.

Replace kmalloc() with kmalloc_array()

Signed-off-by: HariKrishna Sagala <hariconscious@...il.com>
---
 sound/soc/sof/ipc3-dtrace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/sof/ipc3-dtrace.c b/sound/soc/sof/ipc3-dtrace.c
index e5c8fec173c4..6ec391fd39a9 100644
--- a/sound/soc/sof/ipc3-dtrace.c
+++ b/sound/soc/sof/ipc3-dtrace.c
@@ -126,7 +126,7 @@ static int trace_filter_parse(struct snd_sof_dev *sdev, char *string,
 		capacity += TRACE_FILTER_ELEMENTS_PER_ENTRY;
 		entry = strchr(entry + 1, entry_delimiter[0]);
 	}
-	*out = kmalloc(capacity * sizeof(**out), GFP_KERNEL);
+	*out = kmalloc_array(capacity, sizeof(**out), GFP_KERNEL);
 	if (!*out)
 		return -ENOMEM;
 
-- 
2.43.0