Patch "x86/efi: Free efi_pgd with free_pages()" has been added to the 4.15-stable tree

This is a note to let you know that I've just added the patch titled

x86/efi: Free efi_pgd with free_pages()

to the 4.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
x86-efi-free-efi_pgd-with-free_pages.patch
and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Waiman Long <[email protected]>
Date: Thu, 22 Mar 2018 15:18:53 -0400
Subject: x86/efi: Free efi_pgd with free_pages()

From: Waiman Long <[email protected]>

commit 06ace26f4e6fcf747e890a39193be811777a048a upstream.

The efi_pgd is allocated as PGD_ALLOCATION_ORDER pages and therefore must also be freed as PGD_ALLOCATION_ORDER pages with free_pages().

---
 arch/x86/platform/efi/efi_64.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -228,7 +228,7 @@ int __init efi_alloc_page_tables(void)
 	if (!pud) {
 		if (CONFIG_PGTABLE_LEVELS > 4)
 			free_page((unsigned long) pgd_page_vaddr(*pgd));
-		free_page((unsigned long)efi_pgd);
+		free_pages((unsigned long)efi_pgd, PGD_ALLOCATION_ORDER);
 		return -ENOMEM;
 	}
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.15/x86-efi-free-efi_pgd-with-free_pages.patch