The patch titled memcg use css_tryget fix has been removed from the -mm tree. Its filename was memcg-use-css_tryget-in-memcg-fix.patch This patch was dropped because it was folded into memcg-use-css_tryget-in-memcg.patch The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: memcg use css_tryget fix From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> root_mem->last_scanned_child can be NULL here. This may cause NULL pointer access when hierarchy is used. This is a fix for memcg-use-css-tryget-in-memcg.patch Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> CcDaisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx> Cc: Balbir Singh <balbir@xxxxxxxxxx> Cc: Paul Menage <menage@xxxxxxxxxx> Cc: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx> Cc: Li Zefan <lizf@xxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/memcontrol.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -puN mm/memcontrol.c~memcg-use-css_tryget-in-memcg-fix mm/memcontrol.c --- a/mm/memcontrol.c~memcg-use-css_tryget-in-memcg-fix +++ a/mm/memcontrol.c @@ -656,7 +656,7 @@ mem_cgroup_get_first_node(struct mem_cgr if (!root_mem->last_scanned_child || obsolete) { - if (obsolete) + if (obsolete && root_mem->last_scanned_child) mem_cgroup_put(root_mem->last_scanned_child); cgroup = list_first_entry(&root_mem->css.cgroup->children, _ Patches currently in -mm which might be from kamezawa.hiroyu@xxxxxxxxxxxxxx are origin.patch cgroups-make-cgroup-config-a-submenu.patch cgroups-documentation-updates.patch cgroups-remove-some-redundant-null-checks.patch ns_cgroup-remove-unused-spinlock.patch memcg-fix-a-typo-in-kconfig.patch cgroups-add-lock-for-child-cgroups-in-cgroup_post_fork.patch cgroups-fix-cgroup_iter_next-bug.patch cgroups-dont-put-struct-cgroupfs_root-protected-by-rcu.patch cgroups-use-task_lock-for-access-tsk-cgroups-safe-in-cgroup_clone.patch cgroups-call-find_css_set-safely-in-cgroup_attach_task.patch cgroups-remove-rcu_read_lock-in-cgroupstats_build.patch cgroups-make-root_list-contains-active-hierarchies-only.patch cgroups-add-inactive-subsystems-to-rootnodesubsys_list.patch cgroups-introduce-link_css_set-to-remove-duplicate-code.patch devcgroup-use-list_for_each_entry_rcu.patch memcg-introduce-charge-commit-cancel-style-of-functions.patch memcg-fix-gfp_mask-of-callers-of-charge.patch memcg-simple-migration-handling.patch memcg-do-not-recalculate-section-unnecessarily-in-init_section_page_cgroup.patch memcg-move-all-acccounts-to-parent-at-rmdir.patch memcg-reduce-size-of-mem_cgroup-by-using-nr_cpu_ids.patch memcg-new-force_empty-to-free-pages-under-group.patch memcg-handle-swap-caches.patch memcg-memswap-controller-kconfig.patch memcg-swap-cgroup-for-remembering-usage.patch memcg-memswap-controller-core.patch memcg-synchronized-lru.patch memcg-add-mem_cgroup_disabled.patch memory-cgroup-hierarchy-documentation-v4.patch memory-cgroup-resource-counters-for-hierarchy-v4.patch memory-cgroup-hierarchical-reclaim-v4.patch memory-cgroup-hierarchy-feature-selector-v4.patch memcontrol-rcu_read_lock-to-protect-mm_match_cgroup.patch memcg-avoid-unnecessary-system-wide-oom-killer.patch memcg-fix-reclaim-result-checks.patch memcg-revert-gfp-mask-fix.patch memcg-check-group-leader-fix.patch memcg-memoryswap-controller-fix-limit-check.patch memcg-swapout-refcnt-fix.patch memcg-hierarchy-avoid-unnecessary-reclaim.patch inactive_anon_is_low-move-to-vmscan.patch mm-introduce-zone_reclaim-struct.patch mm-add-zone-nr_pages-helper-function.patch memcg-add-null-check-to-page_cgroup_zoneinfo.patch memcg-add-inactive_anon_is_low.patch memcg-add-mem_cgroup_zone_nr_pages.patch memcg-add-zone_reclaim_stat.patch memcg-show-reclaim-stat.patch memcg-rename-scan-global-lru.patch memcg-protect-prev_priority.patch memcg-swappiness.patch memcg-fix-calclation-of-active_ratio.patch memcg-show-real-limit-under-hierarchy-mode.patch memcg-explain-details-and-test-document.patch memcg-dont-trigger-oom-at-page-migration.patch memcg-remove-mem_cgroup_try_charge.patch memcg-avoid-dead-lock-caused-by-race-between-oom-and-cpuset_attach.patch memcg-change-try_to_free_pages-to-hierarchical_reclaim.patch memcg-fix-swap-accounting-leak-v3.patch memcg-fix-double-free-and-make-refcnt-sane.patch memcg-use-css_tryget-in-memcg.patch memcg-use-css_tryget-in-memcg-fix.patch memcg-fix-lru-accounting-for-swapcache-v2.patch memcg-fix-shmems-swap-accounting.patch cgroups-add-a-per-subsystem-hierarchy_mutex.patch cgroups-use-hierarchy_mutex-in-memory-controller.patch cgroups-add-css_tryget.patch cpuset-rcu_read_lock-to-protect-task_cs.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html