From: Yuezhang Mo Date: Tue, 3 Sep 2024 07:01:09 +0000 (+0800) Subject: exfat: fix memory leak in exfat_load_bitmap() X-Git-Tag: v6.12~333^2~3 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d2b537b3e533f28e0d97293fe9293161fe8cd137;p=platform%2Fkernel%2Flinux-amlogic.git exfat: fix memory leak in exfat_load_bitmap() 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") Cc: stable@vger.kernel.org Signed-off-by: Yuezhang Mo Reviewed-by: Aoyama Wataru Signed-off-by: Namjae Jeon --- 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))