From 1a2c8d2f609237664fcda944c251ce693e4366f5 Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt Date: Sun, 8 Oct 2017 06:57:26 +0200 Subject: [PATCH] efi_loader: avoid NULL dereference in efi_dp_match When calling bootefi hello twice a kernel dump occurs. Neither bootefi hello nor bootefi selftest have an image device patch. So do not try to dereference the NULL value. Fixes: 95c5553ea26 efi_loader: refactor boot device and loaded_image handling Signed-off-by: Heinrich Schuchardt Reviewed-by: Simon Glass Signed-off-by: Alexander Graf --- lib/efi_loader/efi_boottime.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index 976d582..54cf164 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -1154,7 +1154,8 @@ void efi_setup_loaded_image(struct efi_loaded_image *info, struct efi_object *ob (void *)&efi_device_path_to_text; info->file_path = file_path; - info->device_handle = efi_dp_find_obj(device_path, NULL); + if (device_path) + info->device_handle = efi_dp_find_obj(device_path, NULL); list_add_tail(&obj->link, &efi_obj_list); } -- 2.7.4