From: Shaohua Li <shaohua.li@intel.com>
To: lkml <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>, clameter@sgi.com
Subject: [PATCH] get_nodes should ignore invalid node
Date: Wed, 22 Aug 2007 10:07:14 +0800 [thread overview]
Message-ID: <1187748434.8474.20.camel@sli10-conroe.sh.intel.com> (raw)
get_nodes doesn't check if nodes in node mask are valid, cause a kernel
oops when an invalid node is used..
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Index: linux/mm/mempolicy.c
===================================================================
--- linux.orig/mm/mempolicy.c 2007-07-25 09:14:33.000000000 +0800
+++ linux/mm/mempolicy.c 2007-08-21 13:15:41.000000000 +0800
@@ -850,6 +850,8 @@ static int get_nodes(nodemask_t *nodes,
if (copy_from_user(nodes_addr(*nodes), nmask, nlongs*sizeof(unsigned long)))
return -EFAULT;
nodes_addr(*nodes)[nlongs-1] &= endmask;
+
+ nodes_and(*nodes, *nodes, node_online_map);
return 0;
}
reply other threads:[~2007-08-22 2:16 UTC|newest]
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