This is a note to let you know that I've just added the patch titled
arm64: mm: remove broken &= operator from pmd_mknotpresent
to the 3.15-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:
arm64-mm-remove-broken-operator-from-pmd_mknotpresent.patch
and it can be found in the queue-3.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From e3a920afc3482e954834a4ed95908c4bc5e4c000 Mon Sep 17 00:00:00 2001
From: Will Deacon <[email protected]>
Date: Wed, 18 Jun 2014 14:06:27 +0100
Subject: arm64: mm: remove broken &= operator from pmd_mknotpresent
From: Will Deacon <[email protected]>
commit e3a920afc3482e954834a4ed95908c4bc5e4c000 upstream.
This should be a plain old '&' and could easily lead to undefined
behaviour if the target of a pmd_mknotpresent invocation was the same
as the parameter.
Fixes: 9c7e535fcc17 (arm64: mm: Route pmd thp functions through pte equivalents)
Signed-off-by: Will Deacon <[email protected]>
Signed-off-by: Catalin Marinas <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
arch/arm64/include/asm/pgtable.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -253,7 +253,7 @@ static inline pmd_t pte_pmd(pte_t pte)
#define pmd_mkwrite(pmd) pte_pmd(pte_mkwrite(pmd_pte(pmd)))
#define pmd_mkdirty(pmd) pte_pmd(pte_mkdirty(pmd_pte(pmd)))
#define pmd_mkyoung(pmd) pte_pmd(pte_mkyoung(pmd_pte(pmd)))
-#define pmd_mknotpresent(pmd) (__pmd(pmd_val(pmd) &= ~PMD_TYPE_MASK))
+#define pmd_mknotpresent(pmd) (__pmd(pmd_val(pmd) & ~PMD_TYPE_MASK))
#define __HAVE_ARCH_PMD_WRITE
#define pmd_write(pmd) pte_write(pmd_pte(pmd))
Patches currently in stable-queue which might be from [email protected] are
queue-3.15/arm64-ptrace-change-fs-when-passing-kernel-pointer-to-regset-code.patch
queue-3.15/arm64-uid16-fix-__kernel_old_-gid-uid-_t-definitions.patch
queue-3.15/arm-8037-1-mm-support-big-endian-page-tables.patch
queue-3.15/arm64-mm-remove-broken-operator-from-pmd_mknotpresent.patch
queue-3.15/arm64-ptrace-fix-empty-registers-set-in-prstatus-of-aarch32-process-core.patch
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