linux-kernel - [PATCH 1/1] interconnect: Handle memory allocation errors

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Message-Id: <20200226110420.5357-2-georgi.djakov@linaro.org>
Date:   Wed, 26 Feb 2020 13:04:20 +0200
From:   Georgi Djakov <georgi.djakov@...aro.org>
To:     gregkh@...uxfoundation.org
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        georgi.djakov@...aro.org
Subject: [PATCH 1/1] interconnect: Handle memory allocation errors

When we allocate memory, kasprintf() can fail and we must check its
return value.

Fixes: 05309830e1f8 ("interconnect: Add a name to struct icc_path")
Signed-off-by: Georgi Djakov <georgi.djakov@...aro.org>
---
 drivers/interconnect/core.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c
index f277e467156f..2c6515e3ecf1 100644
--- a/drivers/interconnect/core.c
+++ b/drivers/interconnect/core.c
@@ -445,6 +445,11 @@ struct icc_path *of_icc_get(struct device *dev, const char *name)
 		path->name = kasprintf(GFP_KERNEL, "%s-%s",
 				       src_node->name, dst_node->name);
 
+	if (!path->name) {
+		kfree(path);
+		return ERR_PTR(-ENOMEM);
+	}
+
 	return path;
 }
 EXPORT_SYMBOL_GPL(of_icc_get);
@@ -579,6 +584,10 @@ struct icc_path *icc_get(struct device *dev, const int src_id, const int dst_id)
 	}
 
 	path->name = kasprintf(GFP_KERNEL, "%s-%s", src->name, dst->name);
+	if (!path->name) {
+		kfree(path);
+		path = ERR_PTR(-ENOMEM);
+	}
 out:
 	mutex_unlock(&icc_lock);
 	return path;