linux-kernel - [PATCH 5.16 227/227] kconfig: fix failing to generate auto.conf

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20220221084942.338752004@linuxfoundation.org>
Date:   Mon, 21 Feb 2022 09:50:46 +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, Jing Leng <jleng@...arella.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.16 227/227] kconfig: fix failing to generate auto.conf

From: Jing Leng <jleng@...arella.com>

[ Upstream commit 1b9e740a81f91ae338b29ed70455719804957b80 ]

When the KCONFIG_AUTOCONFIG is specified (e.g. export \
KCONFIG_AUTOCONFIG=output/config/auto.conf), the directory of
include/config/ will not be created, so kconfig can't create deps
files in it and auto.conf can't be generated.

Signed-off-by: Jing Leng <jleng@...arella.com>
Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 scripts/kconfig/confdata.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 00284c03da4d3..027f4c28dc320 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -992,14 +992,19 @@ static int conf_write_autoconf_cmd(const char *autoconf_name)
 
 static int conf_touch_deps(void)
 {
-	const char *name;
+	const char *name, *tmp;
 	struct symbol *sym;
 	int res, i;
 
-	strcpy(depfile_path, "include/config/");
-	depfile_prefix_len = strlen(depfile_path);
-
 	name = conf_get_autoconfig_name();
+	tmp = strrchr(name, '/');
+	depfile_prefix_len = tmp ? tmp - name + 1 : 0;
+	if (depfile_prefix_len + 1 > sizeof(depfile_path))
+		return -1;
+
+	strncpy(depfile_path, name, depfile_prefix_len);
+	depfile_path[depfile_prefix_len] = 0;
+
 	conf_read_simple(name, S_DEF_AUTO);
 	sym_calc_value(modules_sym);
 
-- 
2.34.1