x86/efi: Free efi_pgd with free_pages()

The efi_pgd is allocated as PGD_ALLOCATION_ORDER pages and therefore must also be freed as PGD_ALLOCATION_ORDER pages with free_pages(). Fixes: d9e9a64 ("x86/mm/pti: Allocate a separate user PGD") Signed-off-by: Waiman Long <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Cc: [email protected] Cc: Dave Hansen <[email protected]> Cc: Ard Biesheuvel <[email protected]> Cc: [email protected] Link: https://lkml.kernel.org/r/[email protected]
olifre · Mar 23, 2018 · 06ace26 · 06ace26
1 parent 31ad7f8
commit 06ace26
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c
@@ -227,7 +227,7 @@ 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;
 	}