Re: kmemleak: Protect the seq start/next/stop sequence byrcu_read_lock()

From: Ingo Molnar
Date: Mon Aug 10 2009 - 14:46:09 EST



* Catalin Marinas <catalin.marinas@xxxxxxx> wrote:

> Hi Ingo,
>
> On Sun, 2009-08-02 at 13:14 +0200, Ingo Molnar wrote:
> > hm, some recent kmemleak patch is causing frequent hard and
> > soft lockups in -tip testing (-rc5 based).
>
> Thanks for reporting this. It shouldn't be caused by the patch
> mentioned in the subject as this only deals with reading the seq
> file which doesn't seem to be the case here.

Since i turned off kmemleak in -tip completely via the patch below i
havent had a single such lockup.

Have you tried the config i sent - does it work fine for you? For me
it locks up on various boxes within a couple of minutes - without
doing anything particular beyond building a kernel or so.

Ingo

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