Commit 3b42d28b authored Aug 31, 2007 by Christoph Lameter Committed by Linus Torvalds Aug 31, 2007

Page migration: Do not accept invalid nodes in the target nodeset



Page migration currently does not check if the target of the move contains
nodes that that are invalid (if root attempts to migrate pages)
and may try to allocate from invalid nodes if these are specified
leading to oopses.

Return -EINVAL if an offline node is specified.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Shaohua Li <shaohua.li@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent dec4ad86

mm/mempolicy.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -955,6 +955,11 @@ asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode,
		goto out;
		}

		if (!nodes_subset(new, node_online_map)) {
		err = -EINVAL;
		goto out;
		}

		err = security_task_movememory(task);
		if (err)
		goto out;

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