File 0008-fsck-fix-memory-leaks-in-restore_boot_region-error-p.patch of Package exfatprogs

From 648116de24779dc5cb7d471afe377d8fb8bb4a8e Mon Sep 17 00:00:00 2001
From: Christophe Vu-Brugier <cvubrugier@fastmail.fm>
Date: Sat, 27 Feb 2021 10:55:38 +0100
Subject: [PATCH 8/9] fsck: fix memory leaks in restore_boot_region() error
 paths

Signed-off-by: Christophe Vu-Brugier <cvubrugier@fastmail.fm>
(cherry picked from commit 0ab362327a775cd71549fba9c9ef53e4320f4a97)
Acked-by: David Disseldorp <ddiss@suse.de>
---
 fsck/fsck.c | 25 ++++++++++++++++++-------
 1 file changed, 18 insertions(+), 7 deletions(-)

diff --git a/fsck/fsck.c b/fsck/fsck.c
index 46c8943..747a771 100644
--- a/fsck/fsck.c
+++ b/fsck/fsck.c
@@ -736,6 +736,7 @@ static int restore_boot_region(struct exfat_blk_dev *bd)
 {
 	int i;
 	char *sector;
+	int ret;
 
 	sector = malloc(bd->sector_size);
 	if (!sector)
@@ -745,21 +746,31 @@ static int restore_boot_region(struct exfat_blk_dev *bd)
 		if (exfat_read(bd->dev_fd, sector, bd->sector_size,
 				BACKUP_BOOT_SEC_IDX * bd->sector_size +
 				i * bd->sector_size) !=
-				(ssize_t)bd->sector_size)
-			return -EIO;
+				(ssize_t)bd->sector_size) {
+			ret = -EIO;
+			goto free_sector;
+		}
 		if (i == 0)
 			((struct pbr *)sector)->bsx.perc_in_use = 0xff;
 
 		if (exfat_write(bd->dev_fd, sector, bd->sector_size,
 				BOOT_SEC_IDX * bd->sector_size +
 				i * bd->sector_size) !=
-				(ssize_t)bd->sector_size)
-			return -EIO;
+				(ssize_t)bd->sector_size) {
+			ret = -EIO;
+			goto free_sector;
+		}
 	}
-	if (fsync(bd->dev_fd))
-		return -EIO;
+
+	if (fsync(bd->dev_fd)) {
+		ret = -EIO;
+		goto free_sector;
+	}
+	ret = 0;
+
+free_sector:
 	free(sector);
-	return 0;
+	return ret;
 }
 
 static int exfat_boot_region_check(struct exfat *exfat, struct pbr **bs)
-- 
2.35.3