From: Tejun Heo <tj@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christoph Lameter <cl@gentwo.org>,
Eric Dumazet <eric.dumazet@gmail.com>,
Huajun Li <huajun.li.lee@gmail.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
netdev <netdev@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: Question about memory leak detector giving false positive report for net/core/flow.c
Date: Thu, 29 Sep 2011 12:07:41 -0700 [thread overview]
Message-ID: <20110929190741.GA10425@mtj.dyndns.org> (raw)
In-Reply-To: <20110929141809.GD32023@e102109-lin.cambridge.arm.com>
On Thu, Sep 29, 2011 at 03:18:10PM +0100, Catalin Marinas wrote:
> On Thu, Sep 29, 2011 at 03:08:47PM +0100, Christoph Lameter wrote:
> > On Wed, 28 Sep 2011, Catalin Marinas wrote:
> >
> > > I tried this but it's tricky. The problem is that the percpu pointer
> > > returned by alloc_percpu() does not directly point to the per-cpu chunks
> > > and kmemleak would report most percpu allocations as leaks. So far the
> > > workaround is to simply mark the alloc_percpu() objects as never leaking
> > > and at least we avoid false positives in other areas. See the patch
> > > below (note that you have to increase the CONFIG_KMEMLEAK_EARLY_LOG_SIZE
> > > as there are many alloc_percpu() calls before kmemleak is fully
> > > initialised):
> >
> > Seems that kernel.org is out and so tejon wont be seeing these.
>
> That's ok, I don't aim this at the upcoming merging window. I don't have
> an alternative email address for him.
That's htejun@gmail.com but as long as lkml is cc'd I can read the
emails. Lack of replies is more due to the month long vacation which
just ended. ;)
Thank you.
--
tejun
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next prev parent reply other threads:[~2011-09-29 19:07 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-26 15:17 Question about memory leak detector giving false positive report for net/core/flow.c Huajun Li
2011-09-26 16:32 ` Eric Dumazet
2011-09-26 16:50 ` Catalin Marinas
2011-09-26 19:46 ` Eric Dumazet
2011-09-27 5:29 ` Huajun Li
2011-09-27 5:55 ` Eric Dumazet
2011-09-27 16:58 ` Catalin Marinas
2011-09-27 17:01 ` Catalin Marinas
2011-09-28 17:23 ` Catalin Marinas
2011-09-29 14:08 ` Christoph Lameter
2011-09-29 14:18 ` Catalin Marinas
2011-09-29 19:07 ` Tejun Heo [this message]
2011-09-27 5:27 ` Huajun Li
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