linux-kernel - [PATCH] kconfig: fix memory leak in sym_warn_unmet

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Message-ID: <20250120081039.29006-1-masahiroy@kernel.org>
Date: Mon, 20 Jan 2025 17:10:31 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: linux-kbuild@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	Masahiro Yamada <masahiroy@...nel.org>,
	Petr Vorel <petr.vorel@...il.com>
Subject: [PATCH] kconfig: fix memory leak in sym_warn_unmet_dep()

The string allocated in sym_warn_unmet_dep() is never freed, leading
to a memory leak when an unmet dependency is detected.

Fixes: f8f69dc0b4e0 ("kconfig: make unmet dependency warnings readable")
Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

 scripts/kconfig/symbol.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index 89b84bf8e21f..1521cdf62fce 100644
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -389,6 +389,7 @@ static void sym_warn_unmet_dep(const struct symbol *sym)
 
 	fputs(str_get(&gs), stderr);
 	sym_warnings++;
+	str_free(&gs);
 }
 
 bool sym_dep_errors(void)
-- 
2.43.0