On 03/29/2013 02:28 PM, Li Zefan wrote: > The memcg is not referenced, so it can be destroyed at anytime right > after we exit rcu read section, so it's not safe to access it. > > To fix this, we call css_tryget() to get a reference while we're still > in rcu read section. > > This also removes a bogus comment above __memcg_create_cache_enqueue(). > Out of curiosity, did you see that happening ? Theoretically, the race you describe seem real, and the fix is sound. Acked-by: Glauber Costa <glommer@xxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
