linux-kernel - [PATCH] pinctrl: qcom: tlmm-test: Fix potential null dereference in tlmm kunit test

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Message-ID: <20250325094932.4733-1-hanchunchao@inspur.com>
Date: Tue, 25 Mar 2025 17:49:32 +0800
From: Charles Han <hanchunchao@...pur.com>
To: <andersson@...nel.org>, <linus.walleij@...aro.org>
CC: <linux-arm-msm@...r.kernel.org>, <linux-gpio@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, Charles Han <hanchunchao@...pur.com>
Subject: [PATCH] pinctrl: qcom: tlmm-test: Fix potential null dereference in tlmm kunit test

kunit_kzalloc() may return a NULL pointer, dereferencing it without
NULL check may lead to NULL dereference.
Add a NULL check for grp.

Fixes: c7984dc0a2b9 ("pinctrl: qcom: Add test case for TLMM interrupt handling")
Signed-off-by: Charles Han <hanchunchao@...pur.com>
---
 drivers/pinctrl/qcom/tlmm-test.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pinctrl/qcom/tlmm-test.c b/drivers/pinctrl/qcom/tlmm-test.c
index fd02bf3a76cb..7b99e89e0f67 100644
--- a/drivers/pinctrl/qcom/tlmm-test.c
+++ b/drivers/pinctrl/qcom/tlmm-test.c
@@ -547,6 +547,7 @@ static int tlmm_test_init(struct kunit *test)
 	struct tlmm_test_priv *priv;
 
 	priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv);
 
 	atomic_set(&priv->intr_count, 0);
 	atomic_set(&priv->thread_count, 0);
-- 
2.43.0