Commit 299b4eaa authored by KAMEZAWA Hiroyuki's avatar KAMEZAWA Hiroyuki Committed by Linus Torvalds
Browse files

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: default avatarLi Zefan <lizf@cn.fujitsu.com>
Signed-off-by: default avatarKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Tested-by: default avatarLi 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 248ae0d4
...@@ -1685,7 +1685,7 @@ move_account: ...@@ -1685,7 +1685,7 @@ move_account:
/* This is for making all *used* pages to be on LRU. */ /* This is for making all *used* pages to be on LRU. */
lru_add_drain_all(); lru_add_drain_all();
ret = 0; 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++) { for (zid = 0; !ret && zid < MAX_NR_ZONES; zid++) {
enum lru_list l; enum lru_list l;
for_each_lru(l) { for_each_lru(l) {
......
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