Re: [RFC] ubsan: signed integer overflow in mem_cgroup_event_ratelimit

From: Michal Hocko
Date: Fri Jun 16 2017 - 11:01:06 EST


[CC Andrew]

On Fri 16-06-17 21:26:53, Alice Ferrazzi wrote:
> Hello,
>
> a user reported a UBSAN signed integer overflow in memcontrol.c
> Shall we change something in mem_cgroup_event_ratelimit()?

It took me quite some staring but it seems the report is correct.
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