linux-kernel - Re: [PATCH 2/2] remoteproc: fix memory leak of remoteproc ida cache layers

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Date:	Thu, 26 Nov 2015 12:37:00 +0200
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Ohad Ben-Cohen <ohad@...ery.com>
Cc:	Suman Anna <s-anna@...com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	virtualization <virtualization@...ts.linux-foundation.org>
Subject: Re: [PATCH 2/2] remoteproc: fix memory leak of remoteproc ida cache
 layers

On Thu, Nov 26, 2015 at 11:38:06AM +0200, Ohad Ben-Cohen wrote:
> Hi Suman,
> 
> On Thu, Sep 17, 2015 at 3:29 AM, Suman Anna <s-anna@...com> wrote:
> > The remoteproc core uses a static ida named rproc_dev_index for
> > assigning an automatic index number to a registered remoteproc.
> > The ida core may allocate some internal idr cache layers and ida
> > bitmap upon any ida allocation, and all these layers are truely
> > freed only upon the ida destruction. The rproc_dev_index ida is
> > not destroyed at present, leading to a memory leak when using the
> > remoteproc core as a module and atleast one rproc device is
> > registered and unregistered.
> >
> > Fix this by invoking ida_destroy() in the remoteproc core module
> > exit.
> 
> I saw there was some discussion about this between Michael, James and
> Tejun whether this should be fixed in the IDA core or not.
> 
> Has it been resolved?
> 
> Thanks,
> Ohad.

I don't think we reached any conclusions.
I guess I'll merge the virtio patch as-is then.
Ohad, would you like to merge 2/2?

-- 
MST
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