zisofs_fill_pages() reads the compressed block pointer table.

The error paths release the current buffer_head.

The loop also releases the old buffer_head when it advances.

However, the success path leaves the last buffer_head referenced.

Release it before returning success.

Fixes: 59bc055211b8 ("zisofs: Implement reading of compressed files when PAGE_CACHE_SIZE > compress block size")
Signed-off-by: Yichong Chen <chenyichong@uniontech.com>
---
 fs/isofs/compress.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/isofs/compress.c b/fs/isofs/compress.c
index 3fda92358e22..f9869d62b850 100644
--- a/fs/isofs/compress.c
+++ b/fs/isofs/compress.c
@@ -293,6 +293,7 @@ static int zisofs_fill_pages(struct inode *inode, int full_page, int pcount,
 		memzero_page(*pages, poffset, PAGE_SIZE - poffset);
 		SetPageUptodate(*pages);
 	}
+	brelse(bh);
 	return 0;
 }
 
-- 
2.51.0