[PATCH 2/2] erofs-utils: mkfs: fix EOD read when calculate sb checksum

[Gao Xiang]

Since images could be very small for smaller block sizes.

Fixes: a4fb8ea13ac7 ("erofs-utils: support arbitrary block sizes")
Signed-off-by: Gao Xiang <hsiang...@linux.alibaba.com>
---
 mkfs/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mkfs/main.c b/mkfs/main.c
index 27e3f03..65d3df6 100644
--- a/mkfs/main.c
+++ b/mkfs/main.c
@@ -614,7 +614,7 @@ static int erofs_mkfs_superblock_csum_set(void)
        unsigned int len;
        struct erofs_super_block *sb;
 
-       ret = blk_read(0, buf, 0, erofs_blknr(sizeof(buf)));
+       ret = blk_read(0, buf, 0, erofs_blknr(EROFS_SUPER_END) + 1);
        if (ret) {
                erofs_err("failed to read superblock to set checksum: %s",
                          erofs_strerror(ret));
-- 
2.24.4