linux-kernel - [PATCH 5.4 017/118] of: unittest: kmemleak in of_unittest_overlay_high

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Date:   Wed, 22 Apr 2020 11:56:18 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, "Erhard F." <erhard_f@...lbox.org>,
        Frank Rowand <frank.rowand@...y.com>,
        Rob Herring <robh@...nel.org>
Subject: [PATCH 5.4 017/118] of: unittest: kmemleak in of_unittest_overlay_high_level()

From: Frank Rowand <frank.rowand@...y.com>

commit 145fc138f9aae4f9e1331352e301df28e16aed35 upstream.

kmemleak reports several memory leaks from devicetree unittest.
This is the fix for problem 3 of 5.

of_unittest_overlay_high_level() failed to kfree the newly created
property when the property named 'name' is skipped.

Fixes: 39a751a4cb7e ("of: change overlay apply input data from unflattened to FDT")
Reported-by: Erhard F. <erhard_f@...lbox.org>
Signed-off-by: Frank Rowand <frank.rowand@...y.com>
Signed-off-by: Rob Herring <robh@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/of/unittest.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -2481,8 +2481,11 @@ static __init void of_unittest_overlay_h
 				goto err_unlock;
 			}
 			if (__of_add_property(of_symbols, new_prop)) {
+				kfree(new_prop->name);
+				kfree(new_prop->value);
+				kfree(new_prop);
 				/* "name" auto-generated by unflatten */
-				if (!strcmp(new_prop->name, "name"))
+				if (!strcmp(prop->name, "name"))
 					continue;
 				unittest(0, "duplicate property '%s' in overlay_base node __symbols__",
 					 prop->name);