[patch 050/118] lib/test_kasan.c: fix memory leak in kmalloc_oob_krealloc_more()

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From: "Gustavo A. R. Silva" <gustavo@xxxxxxxxxxxxxx>
Subject: lib/test_kasan.c: fix memory leak in kmalloc_oob_krealloc_more()

In case memory resources for _ptr2_ were allocated, release them before
return.

Notice that in case _ptr1_ happens to be NULL, krealloc() behaves exactly
like kmalloc().

Addresses-Coverity-ID: 1490594 ("Resource leak")
Link: http://lkml.kernel.org/r/20200123160115.GA4202@embeddedor
Fixes: 3f15801cdc23 ("lib: add kasan test module")
Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx>
Reviewed-by: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 lib/test_kasan.c |    1 +
 1 file changed, 1 insertion(+)

--- a/lib/test_kasan.c~lib-test_kasanc-fix-memory-leak-in-kmalloc_oob_krealloc_more
+++ a/lib/test_kasan.c
@@ -158,6 +158,7 @@ static noinline void __init kmalloc_oob_
 	if (!ptr1 || !ptr2) {
 		pr_err("Allocation failed\n");
 		kfree(ptr1);
+		kfree(ptr2);
 		return;
 	}
 
_



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