From f421731c7e1de6608f8fafb551d199ff5f1d6b97 Mon Sep 17 00:00:00 2001

From: Xiao Ni <xni@redhat.com>

Date: Wed, 2 Jun 2021 09:17:19 +0800

Subject: [PATCH 08/15] mdadm/super1: It needs to specify int32 for

 bitmap_offset

For super1.0 bitmap offset is -16. So it needs to use int type for bitmap offset.

Fixes: 1fe2e1007310 (mdadm/bitmap: locate bitmap calcuate bitmap position wrongly)

Signed-off-by: Xiao Ni <xni@redhat.com>

Signed-off-by: Jes Sorensen <jsorensen@fb.com>

---

 super1.c | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/super1.c b/super1.c

index c05e623..a12a5bc 100644

--- a/super1.c

+++ b/super1.c

@@ -2631,7 +2631,7 @@ static int locate_bitmap1(struct supertype *st, int fd, int node_num)

 	else

 		ret = -1;

-	offset = __le64_to_cpu(sb->super_offset) + __le32_to_cpu(sb->bitmap_offset);

+	offset = __le64_to_cpu(sb->super_offset) + (int32_t)__le32_to_cpu(sb->bitmap_offset);

 	if (node_num) {

 		bms = (bitmap_super_t*)(((char*)sb)+MAX_SB_SIZE);

 		bm_sectors_per_node = calc_bitmap_size(bms, 4096) >> 9;

-- 

2.7.5