FAILED: patch "[PATCH] efi: Add a sanity check to efivar_store_raw()" failed to apply to 4.9-stable tree

The patch below does not apply to the 4.9-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From d6c066fda90d578aacdf19771a027ed484a79825 Mon Sep 17 00:00:00 2001
From: Vladis Dronov <[email protected]>
Date: Sun, 8 Mar 2020 09:08:55 +0100
Subject: [PATCH] efi: Add a sanity check to efivar_store_raw()

Add a sanity check to efivar_store_raw() the same way efivar_{attr,size,data}_read() and efivar_show_raw() have it.

index 69f13bc4b931..aff3dfb4d7ba 100644
@@ -208,6 +208,9 @@ efivar_store_raw(struct efivar_entry *entry, const char *buf, size_t count)
 	u8 *data;
 	int err;
 
+	if (!entry || !buf)
+		return -EINVAL;
+
 	if (in_compat_syscall()) {
 		struct compat_efi_variable *compat;