Commit 800416f799e0723635ac2d720ad4449917a1481c

Authored by Eric Dumazet
Committed by Linus Torvalds
1 parent 0851668fdd

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>

Showing 1 changed file with 1 additions and 1 deletions Side-by-side Diff

... ... @@ -1597,7 +1597,7 @@
1597 1597 (void)first_zones_zonelist(zonelist, highest_zoneidx,
1598 1598 &policy->v.nodes,
1599 1599 &zone);
1600   - return zone->node;
  1600 + return zone ? zone->node : numa_node_id();
1601 1601 }
1602 1602  
1603 1603 default: