The patch titled
memcg: fix oops in mem_cgroup_shrink_usage
has been added to the -mm tree. Its filename is
memcg-fix-oops-in-mem_cgroup_shrink_usage.patch
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The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: memcg: fix oops in mem_cgroup_shrink_usage
From: Hugh Dickins <hugh@xxxxxxxxxxx>
Got an oops in mem_cgroup_shrink_usage() when testing loop over tmpfs:
yes, of course, loop0 has no mm: other entry points check but this didn't.
Signed-off-by: Hugh Dickins <hugh@xxxxxxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memcontrol.c | 2 ++
1 file changed, 2 insertions(+)
diff -puN mm/memcontrol.c~memcg-fix-oops-in-mem_cgroup_shrink_usage mm/memcontrol.c
--- a/mm/memcontrol.c~memcg-fix-oops-in-mem_cgroup_shrink_usage
+++ a/mm/memcontrol.c
@@ -796,6 +796,8 @@ int mem_cgroup_shrink_usage(struct mm_st
if (mem_cgroup_subsys.disabled)
return 0;
+ if (!mm)
+ return 0;
rcu_read_lock();
mem = mem_cgroup_from_task(rcu_dereference(mm->owner));
_
Patches currently in -mm which might be from hugh@xxxxxxxxxxx are
origin.patch
mm-fix-uninitialized-variables-for-find_vma_prepare-callers.patch
memcg-fix-oops-in-mem_cgroup_shrink_usage.patch
git-unionfs.patch
define-page_file_cache-function.patch
vmscan-split-lru-lists-into-anon-file-sets.patch
mlock-mlocked-pages-are-unevictable.patch
vmscan-unevictable-lru-scan-sysctl.patch
mmapc-deinline-a-few-functions.patch
memrlimit-cgroup-mm-owner-callback-changes-to-add-task-info.patch
memrlimit-add-memrlimit-controller-accounting-and-control.patch
memrlimit-improve-error-handling.patch
memrlimit-improve-error-handling-update.patch
memrlimit-handle-attach_task-failure-add-can_attach-callback.patch
prio_tree-debugging-patch.patch
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