cache_reap can run before the node is set up and then reference a NULL l3 list. Check for this explicitely and just continue. The node will be eventually set up. Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx> --- mm/slab.c | 3 +++ 1 file changed, 3 insertions(+) Index: linux-2.6.32-memhotadd/mm/slab.c =================================================================== --- linux-2.6.32-memhotadd.orig/mm/slab.c +++ linux-2.6.32-memhotadd/mm/slab.c @@ -4093,6 +4093,9 @@ static void cache_reap(struct work_struc * we can do some work if the lock was obtained. */ l3 = searchp->nodelists[node]; + /* Note node yet set up */ + if (!l3) + break; reap_alien(searchp, l3); -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>