[PATCH 1/1] fs: ext4: correct error handling

[Heinrich Schuchardt]

After calling strdup() check the returned pointer.

Avoid a memory leak if the directory is not found.

Reported-by: Michael Nazzareno Trimarchi <michael at amarulasolutions.com>
Fixes: 22fdac381f98 ("fs: ext4: implement opendir, readdir, closedir")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>
---
 fs/ext4/ext4fs.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/ext4/ext4fs.c b/fs/ext4/ext4fs.c
index dfecfa0b4e8..1727da2dc6d 100644
--- a/fs/ext4/ext4fs.c
+++ b/fs/ext4/ext4fs.c
@@ -213,7 +213,7 @@ int ext4fs_opendir(const char *dirname, struct fs_dir_stream **dirsp)
 	if (!dirs)
 		return -ENOMEM;
 	dirs->dirname = strdup(dirname);
-	if (!dirs) {
+	if (!dirs->dirname) {
 		free(dirs);
 		return -ENOMEM;
 	}
@@ -224,6 +224,8 @@ int ext4fs_opendir(const char *dirname, struct fs_dir_stream **dirsp)
 		ret = 0;
 		*dirsp = (struct fs_dir_stream *)dirs;
 	} else {
+		free(dirs->dirname);
+		free(dirs);
 		ret = -ENOENT;
 	}
 
-- 
2.45.2