diff mbox series

exfat: call brelse() on error path

Message ID 20200610095934.GA35167@mwanda (mailing list archive)
State New, archived
Headers show
Series exfat: call brelse() on error path | expand

Commit Message

Dan Carpenter June 10, 2020, 9:59 a.m. UTC 
If the second exfat_get_dentry() call fails then we need to release
"old_bh" before returning.

Reported-by: Markus Elfring <Markus.Elfring@web.de>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 fs/exfat/namei.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/fs/exfat/namei.c b/fs/exfat/namei.c
index 5b0f35329d63e..fda92c824ff11 100644
--- a/fs/exfat/namei.c
+++ b/fs/exfat/namei.c
@@ -1077,10 +1077,14 @@  static int exfat_rename_file(struct inode *inode, struct exfat_chain *p_dir,
 
 		epold = exfat_get_dentry(sb, p_dir, oldentry + 1, &old_bh,
 			&sector_old);
+		if (!epold)
+			return -EIO;
 		epnew = exfat_get_dentry(sb, p_dir, newentry + 1, &new_bh,
 			&sector_new);
-		if (!epold || !epnew)
+		if (!epnew) {
+			brelse(old_bh);
 			return -EIO;
+		}
 
 		memcpy(epnew, epold, DENTRY_SIZE);
 		exfat_update_bh(sb, new_bh, sync);