-stable review patch. If anyone has any objections, please let us know. ------------------ There was a pretty bad bug in there that the code would always check the full VMA, not the range the user requested. When the VMA to be checked was merged with the previous VMA this could lead to spurious failures. Signed-off-by: Andi Kleen Signed-off-by: Chris Wright --- mm/mempolicy.c | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletion(-) Index: linux-2.6.13.y/mm/mempolicy.c =================================================================== --- linux-2.6.13.y.orig/mm/mempolicy.c +++ linux-2.6.13.y/mm/mempolicy.c @@ -333,8 +333,13 @@ check_range(struct mm_struct *mm, unsign if (prev && prev->vm_end < vma->vm_start) return ERR_PTR(-EFAULT); if ((flags & MPOL_MF_STRICT) && !is_vm_hugetlb_page(vma)) { + unsigned long endvma = vma->vm_end; + if (endvma > end) + endvma = end; + if (vma->vm_start > start) + start = vma->vm_start; err = check_pgd_range(vma->vm_mm, - vma->vm_start, vma->vm_end, nodes); + start, endvma, nodes); if (err) { first = ERR_PTR(err); break; --