Messages in this thread Patch in this message |  | | | Date | Tue, 07 Dec 2010 16:04:05 -0800 | | From | Greg KH <> | | Subject | [06/44] numa: fix slab_node(MPOL_BIND) |
| |
2.6.27-stable review patch. If anyone has any objections, please let us know.
------------------ From: Eric Dumazet <eric.dumazet@gmail.com>
commit 800416f799e0723635ac2d720ad4449917a1481c upstream.
When a node contains only HighMem memory, slab_node(MPOL_BIND) dereferences a NULL pointer.
[ This code seems to go back all the way to commit 19770b32609b: "mm: filter based on a nodemask as well as a gfp_mask". Which was back in April 2008, and it got merged into 2.6.26. - Linus ]
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Christoph Lameter <cl@linux.com> Cc: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- mm/mempolicy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -1404,7 +1404,7 @@ unsigned slab_node(struct mempolicy *pol (void)first_zones_zonelist(zonelist, highest_zoneidx, &policy->v.nodes, &zone); - return zone->node; + return zone ? zone->node : numa_node_id(); } default:
|  |