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authorChristoph Lameter <clameter@engr.sgi.com>2006-03-02 02:54:37 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-02 08:33:07 -0800
commita57ebfdb2cf9fa60dfa2f403f70ef6c432ca2a62 (patch)
tree1597343f3e9c076fa37ceb2c6442cc9e3ca44656
parent685db65e422bfa523b8a9dacb5a658b42b254f05 (diff)
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op-kernel-dev-a57ebfdb2cf9fa60dfa2f403f70ef6c432ca2a62.tar.gz
[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 <clameter@engr.sgi.com> Cc: Hugh Dickins <hugh@veritas.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--mm/mempolicy.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 5643cfe..1a21008 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) {
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