Subject: [merged] revert-memcg-avoid-dangling-reference-count-in-creation-failure.patch removed from -mm tree To: mhocko@xxxxxxx,glommer@xxxxxxxxxx,hannes@xxxxxxxxxxx,hughd@xxxxxxxxxx,kamezawa.hiroyu@xxxxxxxxxxxxxx,lizefan@xxxxxxxxxx,stable@xxxxxxxxxxxxxxx,tj@xxxxxxxxxx,mm-commits@xxxxxxxxxxxxxxx From: akpm@xxxxxxxxxxxxxxxxxxxx Date: Tue, 09 Jul 2013 16:20:33 -0700 The patch titled Subject: Revert "memcg: avoid dangling reference count in creation failure" has been removed from the -mm tree. Its filename was revert-memcg-avoid-dangling-reference-count-in-creation-failure.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Michal Hocko <mhocko@xxxxxxx> Subject: Revert "memcg: avoid dangling reference count in creation failure" This reverts e4715f01be697a. mem_cgroup_put is hierarchy aware so mem_cgroup_put(memcg) already drops an additional reference from all parents so the additional mem_cgrroup_put(parent) potentially causes use-after-free. Signed-off-by: Michal Hocko <mhocko@xxxxxxx> Signed-off-by: Li Zefan <lizefan@xxxxxxxxxx> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> Cc: Hugh Dickins <hughd@xxxxxxxxxx> Cc: Tejun Heo <tj@xxxxxxxxxx> Cc: Glauber Costa <glommer@xxxxxxxxxx> Cc: Johannes Weiner <hannes@xxxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> [3.9+] Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/memcontrol.c | 2 -- 1 file changed, 2 deletions(-) diff -puN mm/memcontrol.c~revert-memcg-avoid-dangling-reference-count-in-creation-failure mm/memcontrol.c --- a/mm/memcontrol.c~revert-memcg-avoid-dangling-reference-count-in-creation-failure +++ a/mm/memcontrol.c @@ -6352,8 +6352,6 @@ mem_cgroup_css_online(struct cgroup *con * call __mem_cgroup_free, so return directly */ mem_cgroup_put(memcg); - if (parent->use_hierarchy) - mem_cgroup_put(parent); } return error; } _ Patches currently in -mm which might be from mhocko@xxxxxxx are origin.patch linux-next.patch include-linux-schedh-dont-use-task-pid-tgid-in-same_thread_group-has_group_leader_pid.patch inode-convert-inode-lru-list-to-generic-lru-list-code-inode-move-inode-to-a-different-list-inside-lock.patch list_lru-per-node-list-infrastructure-fix-broken-lru_retry-behaviour.patch list_lru-remove-special-case-function-list_lru_dispose_all.patch xfs-convert-dquot-cache-lru-to-list_lru-fix-dquot-isolation-hang.patch list_lru-dynamically-adjust-node-arrays-super-fix-for-destroy-lrus.patch drop_caches-add-some-documentation-and-info-messsge.patch staging-lustre-ldlm-convert-to-shrinkers-to-count-scan-api.patch staging-lustre-obdclass-convert-lu_object-shrinker-to-count-scan-api.patch staging-lustre-ptlrpc-convert-to-new-shrinker-api.patch staging-lustre-libcfs-cleanup-linux-memh.patch staging-lustre-replace-num_physpages-with-totalram_pages.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html