Commit a57ebfdb authored Mar 02, 2006 by Christoph Lameter Committed by Linus Torvalds Mar 02, 2006

[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>

parent 685db65e

mm/mempolicy.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1793,6 +1793,7 @@ int show_numa_map(struct seq_file m, void v)
		if (!md)
		return 0;

		if (!is_vm_hugetlb_page(vma))
		check_pgd_range(vma, vma->vm_start, vma->vm_end,
		&node_online_map, MPOL_MF_STATS, md);