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efi_loader: avoid NULL dereference in efi_dp_match

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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: 95c5553ea2 efi_loader: refactor boot device and loaded_image handling
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Heinrich Schuchardt 2017-10-08 06:57:26 +02:00 committed by Alexander Graf
parent 7f8ec5b63e
commit 1a2c8d2f60
1 changed files with 2 additions and 1 deletions
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3
lib/efi_loader/efi_boottime.c
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@ -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);
}