[PATCH master 31/39] efi: payload: fix possible memory leaks during init

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

efi_get_boot(): buf from efi_get_global_var() is never freed after
parsing the Boot variable. Add free(buf) before return.

efi_late_init(): the flat DTB blob from read_file() is never freed
after of_unflatten_dtb() creates the unflattened tree. Free it
immediately after unflattening.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 efi/payload/init.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/efi/payload/init.c b/efi/payload/init.c
index f74ac4966fb1..03f831840de7 100644
--- a/efi/payload/init.c
+++ b/efi/payload/init.c
@@ -96,6 +96,8 @@ static struct efi_boot *efi_get_boot(int num)
 
 	printf("path: %s\n", device_path_to_str(boot->path, true));
 
+	free(buf);
+
 	return boot;
 }
 
@@ -301,6 +303,8 @@ static int efi_late_init(void)
 	}
 
 	state_root = of_unflatten_dtb(fdt, size);
+	free(fdt);
+
 	if (!IS_ERR(state_root)) {
 		struct device_node *np = NULL;
 		struct state *state;
-- 
2.47.3