[PATCH 5.7 121/124] efi/libstub: Stop parsing arguments at "--"

[Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>]

From: Arvind Sankar <nivedita@xxxxxxxxxxxx>

commit 1fd9717d75df68e3c3509b8e7b1138ca63472f88 upstream.

Arguments after "--" are arguments for init, not for the kernel.

Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Arvind Sankar <nivedita@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20200725155916.1376773-1-nivedita@xxxxxxxxxxxx
Signed-off-by: Ard Biesheuvel <ardb@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/firmware/efi/libstub/efi-stub-helper.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/firmware/efi/libstub/efi-stub-helper.c
+++ b/drivers/firmware/efi/libstub/efi-stub-helper.c
@@ -87,6 +87,8 @@ efi_status_t efi_parse_options(char cons
 		char *param, *val;
 
 		str = next_arg(str, &param, &val);
+		if (!val && !strcmp(param, "--"))
+			break;
 
 		if (!strcmp(param, "nokaslr")) {
 			efi_nokaslr = true;