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Subject[GIT pull] x86 fix for 4.16
Linus,

please pull the latest x86-urgent-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-urgent-for-linus

A single fix for vmalloc_fault() which uses p*d_huge() unconditionally
whether CONFIG_HUGETLBFS is set or not. In case of CONFIG_HUGETLBFS=n this
results in a crash as p*d_huge() returns 0 in that case.

Thanks,

tglx

------------------>
Toshi Kani (1):
x86/mm: Fix vmalloc_fault to use pXd_large


arch/x86/mm/fault.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index c88573d90f3e..25a30b5d6582 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -330,7 +330,7 @@ static noinline int vmalloc_fault(unsigned long address)
if (!pmd_k)
return -1;

- if (pmd_huge(*pmd_k))
+ if (pmd_large(*pmd_k))
return 0;

pte_k = pte_offset_kernel(pmd_k, address);
@@ -475,7 +475,7 @@ static noinline int vmalloc_fault(unsigned long address)
if (pud_none(*pud) || pud_pfn(*pud) != pud_pfn(*pud_ref))
BUG();

- if (pud_huge(*pud))
+ if (pud_large(*pud))
return 0;

pmd = pmd_offset(pud, address);
@@ -486,7 +486,7 @@ static noinline int vmalloc_fault(unsigned long address)
if (pmd_none(*pmd) || pmd_pfn(*pmd) != pmd_pfn(*pmd_ref))
BUG();

- if (pmd_huge(*pmd))
+ if (pmd_large(*pmd))
return 0;

pte_ref = pte_offset_kernel(pmd_ref, address);
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