linux-kernel - [PATCH 5.16 201/203] kconfig: fix missing fclose() on error paths

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Message-Id: <20220214092517.204082731@linuxfoundation.org>
Date:   Mon, 14 Feb 2022 10:27:25 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Ryan Cai <ycaibb@...il.com>,
        Masahiro Yamada <masahiroy@...nel.org>
Subject: [PATCH 5.16 201/203] kconfig: fix missing fclose() on error paths

From: Masahiro Yamada <masahiroy@...nel.org>

commit d23a0c3718222a42430fd56359478a6fc7675070 upstream.

The file is not closed when ferror() fails.

Fixes: 00d674cb3536 ("kconfig: refactor conf_write_dep()")
Fixes: 57ddd07c4560 ("kconfig: refactor conf_write_autoconf()")
Reported-by: Ryan Cai <ycaibb@...il.com>
Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 scripts/kconfig/confdata.c |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -977,10 +977,10 @@ static int conf_write_autoconf_cmd(const
 
 	fprintf(out, "\n$(deps_config): ;\n");
 
-	if (ferror(out)) /* error check for all fprintf() calls */
-		return -1;
-
+	ret = ferror(out); /* error check for all fprintf() calls */
 	fclose(out);
+	if (ret)
+		return -1;
 
 	if (rename(tmp, name)) {
 		perror("rename");
@@ -1091,10 +1091,10 @@ static int __conf_write_autoconf(const c
 			print_symbol(file, sym);
 
 	/* check possible errors in conf_write_heading() and print_symbol() */
-	if (ferror(file))
-		return -1;
-
+	ret = ferror(file);
 	fclose(file);
+	if (ret)
+		return -1;
 
 	if (rename(tmp, filename)) {
 		perror("rename");