[PATCH 1/1] mdadm/super1: It needs to specify int32 for bitmap_offset
From: Xiao Ni <hidden>
Date: 2021-06-02 01:17:27
Subsystem:
the rest · Maintainer:
Linus Torvalds
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 <redacted> --- 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