The patch titled
Subject: mm, kasan: add a ksize() test
has been removed from the -mm tree. Its filename was
mm-kasan-add-a-ksize-test.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Alexander Potapenko <glider@xxxxxxxxxx>
Subject: mm, kasan: add a ksize() test
Add a test that makes sure ksize() unpoisons the whole chunk.
Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx>
Acked-by: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Cc: Andrey Konovalov <adech.fo@xxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Konstantin Serebryany <kcc@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/test_kasan.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff -puN lib/test_kasan.c~mm-kasan-add-a-ksize-test lib/test_kasan.c
--- a/lib/test_kasan.c~mm-kasan-add-a-ksize-test
+++ a/lib/test_kasan.c
@@ -344,6 +344,25 @@ static noinline void __init kasan_stack_
*(volatile char *)p;
}
+static noinline void __init ksize_unpoisons_memory(void)
+{
+ char *ptr;
+ size_t size = 123, real_size = size;
+
+ pr_info("ksize() unpoisons the whole allocated chunk\n");
+ ptr = kmalloc(size, GFP_KERNEL);
+ if (!ptr) {
+ pr_err("Allocation failed\n");
+ return;
+ }
+ real_size = ksize(ptr);
+ /* This access doesn't trigger an error. */
+ ptr[size] = 'x';
+ /* This one does. */
+ ptr[real_size] = 'y';
+ kfree(ptr);
+}
+
static int __init kmalloc_tests_init(void)
{
kmalloc_oob_right();
@@ -367,6 +386,7 @@ static int __init kmalloc_tests_init(voi
kmem_cache_oob();
kasan_stack_oob();
kasan_global_oob();
+ ksize_unpoisons_memory();
return -EAGAIN;
}
_
Patches currently in -mm which might be from glider@xxxxxxxxxx are
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
