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authorEric Dumazet <eric.dumazet@gmail.com>2010-10-27 19:33:43 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-28 10:04:30 -0700
commit800416f799e0723635ac2d720ad4449917a1481c (patch)
tree75f18c93accdfd4b5f58ac3172a336607bde508b /mm
parent0851668fdd97e526b2a41f794b785c204dd3d3e0 (diff)
downloadlinux-2.6.38-lt-ux500-800416f799e0723635ac2d720ad4449917a1481c.tar.gz
numa: fix slab_node(MPOL_BIND)
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> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/mempolicy.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 81a127643ae..4a57f135b76 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1597,7 +1597,7 @@ unsigned slab_node(struct mempolicy *policy)
(void)first_zones_zonelist(zonelist, highest_zoneidx,
&policy->v.nodes,
&zone);
- return zone->node;
+ return zone ? zone->node : numa_node_id();
}
default: