Naresh Kamboju writes:
This patch is causing oom-killer while running mkfs -t ext4 on i386 kernel running on x86_64 machine version linux-next 5.7.0-rc6-next-20200521.
I think I see what's wrong here -- if we bail out early, memory.e{min,low} might be uninitialised.
Does this patch fix it, by any chance?
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index d3b23c57bed4..aa902b9cbb79 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -5046,6 +5046,9 @@ mem_cgroup_css_alloc(struct cgroup_subsys_state *parent_css) memory_cgrp_subsys.broken_hierarchy = true; }
+ memcg->memory.emin = 0; + memcg->memory.elow = 0; + /* The following stuff does not apply to the root */ if (!parent) { #ifdef CONFIG_MEMCG_KMEM