kconfig: fix memory leak in sym_warn_unmet_dep()

[ Upstream commit a409fc1463d664002ea9bf700ae4674df03de111 ]

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@kernel.org>
Reviewed-by: Petr Vorel <pvorel@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index 89b84bf8e21fa63e6ca2482561017c8508910717..7beb59dec5a081513ca742bf4d7840551a39b5db 100644 (file)
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -388,6 +388,7 @@ static void sym_warn_unmet_dep(const struct symbol *sym)
                               "  Selected by [m]:\n");
 
        fputs(str_get(&gs), stderr);
+       str_free(&gs);
        sym_warnings++;
 }