The patch titled
Subject: lib/test_kasan.c: make kmalloc_oob_krealloc_less more correctly
has been added to the -mm tree. Its filename is
test_kasan-make-kmalloc_oob_krealloc_less-more-correctly.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/test_kasan-make-kmalloc_oob_krealloc_less-more-correctly.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/test_kasan-make-kmalloc_oob_krealloc_less-more-correctly.patch
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------------------------------------------------------
From: Wang Long <long.wanglong@xxxxxxxxxx>
Subject: lib/test_kasan.c: make kmalloc_oob_krealloc_less more correctly
In kmalloc_oob_krealloc_less, I think it is better to test
the size2 boundary.
If we do not call krealloc, the access of position size1 will still cause
out-of-bounds and access of position size2 does not. After call krealloc,
the access of position size2 cause out-of-bounds. So using size2 is more
correct.
Signed-off-by: Wang Long <long.wanglong@xxxxxxxxxx>
Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/test_kasan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN lib/test_kasan.c~test_kasan-make-kmalloc_oob_krealloc_less-more-correctly lib/test_kasan.c
--- a/lib/test_kasan.c~test_kasan-make-kmalloc_oob_krealloc_less-more-correctly
+++ a/lib/test_kasan.c
@@ -114,7 +114,7 @@ static noinline void __init kmalloc_oob_
kfree(ptr1);
return;
}
- ptr2[size1] = 'x';
+ ptr2[size2] = 'x';
kfree(ptr2);
}
_
Patches currently in -mm which might be from long.wanglong@xxxxxxxxxx are
test_kasan-just-fix-a-typo.patch
test_kasan-make-kmalloc_oob_krealloc_less-more-correctly.patch
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