[PATCH v1 1/1] bitmap: Add test for out-of-boundary modifications for scatter & gather

[Andy Shevchenko]

Make sure that bitmap_scatter() and bitmap_gather() do not modify
the bits outside of the given nbits span.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
 lib/test_bitmap.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c
index c83829ef557f..2952a6147e81 100644
--- a/lib/test_bitmap.c
+++ b/lib/test_bitmap.c
@@ -354,18 +354,22 @@ static void __init test_replace(void)
 
 static const unsigned long sg_mask[] __initconst = {
 	BITMAP_FROM_U64(0x000000000000035aULL),
+	BITMAP_FROM_U64(0x0000000000000000ULL),
 };
 
 static const unsigned long sg_src[] __initconst = {
 	BITMAP_FROM_U64(0x0000000000000667ULL),
+	BITMAP_FROM_U64(0x0000000000000000ULL),
 };
 
 static const unsigned long sg_gather_exp[] __initconst = {
 	BITMAP_FROM_U64(0x0000000000000029ULL),
+	BITMAP_FROM_U64(0x0000000000000000ULL),
 };
 
 static const unsigned long sg_scatter_exp[] __initconst = {
 	BITMAP_FROM_U64(0x000000000000021aULL),
+	BITMAP_FROM_U64(0x0000000000000000ULL),
 };
 
 static void __init test_bitmap_sg(void)
@@ -379,18 +383,18 @@ static void __init test_bitmap_sg(void)
 	/* Simple gather call */
 	bitmap_zero(bmap_gather, 100);
 	bitmap_gather(bmap_gather, sg_src, sg_mask, nbits);
-	expect_eq_bitmap(sg_gather_exp, bmap_gather, nbits);
+	expect_eq_bitmap(sg_gather_exp, bmap_gather, 100);
 
 	/* Simple scatter call */
 	bitmap_zero(bmap_scatter, 100);
 	bitmap_scatter(bmap_scatter, sg_src, sg_mask, nbits);
-	expect_eq_bitmap(sg_scatter_exp, bmap_scatter, nbits);
+	expect_eq_bitmap(sg_scatter_exp, bmap_scatter, 100);
 
 	/* Scatter/gather relationship */
 	bitmap_zero(bmap_tmp, 100);
 	bitmap_gather(bmap_tmp, bmap_scatter, sg_mask, nbits);
 	bitmap_scatter(bmap_res, bmap_tmp, sg_mask, nbits);
-	expect_eq_bitmap(bmap_scatter, bmap_res, nbits);
+	expect_eq_bitmap(bmap_scatter, bmap_res, 100);
 }
 
 #define PARSE_TIME	0x1
-- 
2.50.1