linux-kernel - [PATCH] mailbox: tegra-hsp: Add check for devm_kstrdup

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Message-Id: <20250219022753.2589753-1-haoxiang_li2024@163.com>
Date: Wed, 19 Feb 2025 10:27:53 +0800
From: Haoxiang Li <haoxiang_li2024@....com>
To: jassisinghbrar@...il.com,
	thierry.reding@...il.com,
	jonathanh@...dia.com,
	brgl@...ev.pl
Cc: linux-kernel@...r.kernel.org,
	linux-tegra@...r.kernel.org,
	Haoxiang Li <haoxiang_li2024@....com>,
	stable@...r.kernel.org
Subject: [PATCH] mailbox: tegra-hsp: Add check for devm_kstrdup_const()

Add check for the return value of devm_kstrdup_const() in
tegra_hsp_doorbell_create() to catch potential exception.

Fixes: a54d03ed01b4 ("mailbox: tegra-hsp: use devm_kstrdup_const()")
Cc: stable@...r.kernel.org
Signed-off-by: Haoxiang Li <haoxiang_li2024@....com>
---
 drivers/mailbox/tegra-hsp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/mailbox/tegra-hsp.c b/drivers/mailbox/tegra-hsp.c
index c1981f091bd1..773a1cf6d93d 100644
--- a/drivers/mailbox/tegra-hsp.c
+++ b/drivers/mailbox/tegra-hsp.c
@@ -285,6 +285,8 @@ tegra_hsp_doorbell_create(struct tegra_hsp *hsp, const char *name,
 	db->channel.hsp = hsp;
 
 	db->name = devm_kstrdup_const(hsp->dev, name, GFP_KERNEL);
+	if (!db->name)
+		return ERR_PTR(-ENOMEM);
 	db->master = master;
 	db->index = index;
 
-- 
2.25.1