Messages in this thread Patch in this message | | | Date | Fri, 23 Mar 2018 12:21:54 -0700 | From | tip-bot for Waiman Long <> | Subject | [tip:x86/pti] x86/efi: Free efi_pgd with free_pages() |
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Commit-ID: 06ace26f4e6fcf747e890a39193be811777a048a Gitweb: https://git.kernel.org/tip/06ace26f4e6fcf747e890a39193be811777a048a Author: Waiman Long <longman@redhat.com> AuthorDate: Thu, 22 Mar 2018 15:18:53 -0400 Committer: Thomas Gleixner <tglx@linutronix.de> CommitDate: Fri, 23 Mar 2018 20:18:31 +0100
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: d9e9a6418065 ("x86/mm/pti: Allocate a separate user PGD") Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: linux-efi@vger.kernel.org Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/1521746333-19593-1-git-send-email-longman@redhat.com
--- arch/x86/platform/efi/efi_64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c index c310a8284358..f9cfbc0d1f33 100644 --- 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; }
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