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| author | David S. Miller <davem@davemloft.net> | 2012-05-20 21:53:04 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-05-20 21:53:04 -0400 |
| commit | 17eea0df5f7068fc04959e655ef8f0a0ed097e19 (patch) | |
| tree | d44b5cceb813dddfd1e62fe9f92556cf113d62fd /arch/arm/mm | |
| parent | 9b905fe68433378032b851c4d81a59187689fa52 (diff) | |
| parent | 76e10d158efb6d4516018846f60c2ab5501900bc (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'arch/arm/mm')
| -rw-r--r-- | arch/arm/mm/fault.c | 4 | ||||
| -rw-r--r-- | arch/arm/mm/mmu.c | 3 |
2 files changed, 5 insertions, 2 deletions
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c index f07467533365..5bb48356d217 100644 --- a/arch/arm/mm/fault.c +++ b/arch/arm/mm/fault.c @@ -247,7 +247,9 @@ good_area: return handle_mm_fault(mm, vma, addr & PAGE_MASK, flags); check_stack: - if (vma->vm_flags & VM_GROWSDOWN && !expand_stack(vma, addr)) + /* Don't allow expansion below FIRST_USER_ADDRESS */ + if (vma->vm_flags & VM_GROWSDOWN && + addr >= FIRST_USER_ADDRESS && !expand_stack(vma, addr)) goto good_area; out: return fault; diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 2c7cf2f9c837..aa78de8bfdd3 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -489,7 +489,8 @@ static void __init build_mem_type_table(void) */ for (i = 0; i < ARRAY_SIZE(mem_types); i++) { mem_types[i].prot_pte |= PTE_EXT_AF; - mem_types[i].prot_sect |= PMD_SECT_AF; + if (mem_types[i].prot_sect) + mem_types[i].prot_sect |= PMD_SECT_AF; } kern_pgprot |= PTE_EXT_AF; vecs_pgprot |= PTE_EXT_AF; |