If the first directory entry in the root directory is not a bitmap
directory entry, 'bh' will not be released and reassigned, which
will cause a memory leak.
Fixes: 1e49a94cf707 ("exfat: add bitmap operations")
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@xxxxxxxx>
Reviewed-by: Aoyama Wataru <wataru.aoyama@xxxxxxxx>
---
fs/exfat/balloc.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/fs/exfat/balloc.c b/fs/exfat/balloc.c
index 0356c88252bd..ce9be95c9172 100644
--- a/fs/exfat/balloc.c
+++ b/fs/exfat/balloc.c
@@ -91,11 +91,8 @@ int exfat_load_bitmap(struct super_block *sb)
return -EIO;
type = exfat_get_entry_type(ep);
- if (type == TYPE_UNUSED)
- break;
- if (type != TYPE_BITMAP)
- continue;
- if (ep->dentry.bitmap.flags == 0x0) {
+ if (type == TYPE_BITMAP &&
+ ep->dentry.bitmap.flags == 0x0) {
int err;
err = exfat_allocate_bitmap(sb, ep);
@@ -103,6 +100,9 @@ int exfat_load_bitmap(struct super_block *sb)
return err;
}
brelse(bh);
+
+ if (type == TYPE_UNUSED)
+ return -EINVAL;
}
if (exfat_get_next_cluster(sb, &clu.dir))
--
2.34.1
