Re: [PATCH 1/1] mdadm/super1: It needs to specify int32 for bitmap_offset

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Hi Jes

Ping, is the patch ok for you to merge it

Regards
Xiao

On Wed, Jun 2, 2021 at 9:17 AM Xiao Ni <xni@xxxxxxxxxx> wrote:
>
> 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@xxxxxxxxxx>
> ---
>  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
>




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