From a57ebfdb2cf9fa60dfa2f403f70ef6c432ca2a62 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Thu, 2 Mar 2006 02:54:37 -0800 Subject: [PATCH] numa_maps: Fix potential crash on non IA64 platforms numa_maps should not scan over huge vmas in order not to cause problems for non IA64 platforms that may have pte entries pointing to huge pages in a variety of ways in their page tables. Add a simple check to ignore vmas containing huge pages. Signed-off-by: Christoph Lameter Cc: Hugh Dickins Cc: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/mempolicy.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'mm/mempolicy.c') diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 5643cfed6b0f..1a210088ad80 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -1793,7 +1793,8 @@ int show_numa_map(struct seq_file *m, void *v) if (!md) return 0; - check_pgd_range(vma, vma->vm_start, vma->vm_end, + if (!is_vm_hugetlb_page(vma)) + check_pgd_range(vma, vma->vm_start, vma->vm_end, &node_online_map, MPOL_MF_STATS, md); if (md->pages) { -- cgit v1.2.3