Messages in this thread | | | From | Yizhuo Zhai <> | Date | Fri, 30 Aug 2019 15:27:50 -0700 | Subject | Re: [PATCH] mm/memcg: return value of the function mem_cgroup_from_css() is not checked |
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Our tool did not trace back the whole path, so, now we could say it might happen.
On Thu, Aug 22, 2019 at 1:12 PM Michal Hocko <mhocko@kernel.org> wrote: > > On Thu 22-08-19 13:07:17, Yizhuo Zhai wrote: > > This will happen if variable "wb->memcg_css" is NULL. This case is reported > > by our analysis tool. > > Does your tool report the particular call path and conditions when that > happen? Or is it just a "it mignt happen" kinda thing? > > > Since the function mem_cgroup_wb_domain() is visible to the global, we > > cannot control caller's behavior. > > I am sorry but I do not understand what is this supposed to mean. > -- > Michal Hocko > SUSE Labs
-- Kind Regards,
Yizhuo Zhai
Computer Science, Graduate Student University of California, Riverside
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