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authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>2009-01-29 14:25:17 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-29 18:04:44 -0800
commit299b4eaa302138426d5a9ecd954de1f565d76c94 (patch)
tree790271af066eaa6d01f94ff91ab14d54f96c6f62 /mm
parent248ae0d43fe7f951352eedfff36572d4b75ce963 (diff)
downloadlinux-299b4eaa302138426d5a9ecd954de1f565d76c94.tar.gz
memcg: NULL pointer dereference at rmdir on some NUMA systems
N_POSSIBLE doesn't means there is memory...and force_empty can visit invalid node which have no pgdat. To visit all valid nodes, N_HIGH_MEMORY should be used. Reported-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Tested-by: Li Zefan <lizf@cn.fujitsu.com> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/memcontrol.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 76feccd26dc..8e4be9cb2a6 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1685,7 +1685,7 @@ move_account:
/* This is for making all *used* pages to be on LRU. */
lru_add_drain_all();
ret = 0;
- for_each_node_state(node, N_POSSIBLE) {
+ for_each_node_state(node, N_HIGH_MEMORY) {
for (zid = 0; !ret && zid < MAX_NR_ZONES; zid++) {
enum lru_list l;
for_each_lru(l) {