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From: peter.ujfalusi@ti.com (Peter Ujfalusi)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/5] dmaengine: bcm2835-dma: Fix memory leak when stopping a running transfer
Date: Sat, 28 Mar 2015 23:50:08 +0200	[thread overview]
Message-ID: <55172210.4070900@ti.com> (raw)
In-Reply-To: <551626A5.3080509@wwwdotorg.org>

Thanks,

On 03/28/2015 05:57 AM, Stephen Warren wrote:
> On 03/27/2015 05:35 AM, Peter Ujfalusi wrote:
>> The vd->node is removed from the lists when the transfer started so the
>> vchan_get_all_descriptors() will not find it. This results memory leak.
> 
> Acked-by: Stephen Warren <swarren@wwwdotorg.org>
> (I'm just assuming the explanation makes sense and is correct; more of a
> not-a-NAK so it doesn't look like a lack of response!)

I can not debug the bcm2835-dma driver, but the exact same pattern existed in
edma and omap-dma driver and they both leaked the edesc in a same predictable
fashion. I just checked the virt-dma users and sent the fixes for the ones
which had the same flow of events.

-- 
P?ter

  reply	other threads:[~2015-03-28 21:50 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-27 11:35 [PATCH 0/5] dmaengine: Fix memory leak amongs virt-dma users Peter Ujfalusi
2015-03-27 11:35 ` [PATCH 1/5] dmaengine: edma: fix memory leak when terminating running transfers Peter Ujfalusi
2015-03-30 17:48   ` Vinod Koul
2015-03-27 11:35 ` [PATCH 2/5] dmaengine: omap-dma: Fix memory leak when terminating running transfer Peter Ujfalusi
2015-03-30 17:48   ` Vinod Koul
2015-03-27 11:35 ` [PATCH 3/5] dmaengine: bcm2835-dma: Fix memory leak when stopping a " Peter Ujfalusi
2015-03-28  3:57   ` Stephen Warren
2015-03-28 21:50     ` Peter Ujfalusi [this message]
2015-03-30 17:48   ` Vinod Koul
2015-03-27 11:35 ` [PATCH 4/5] dmaengine: hsu: " Peter Ujfalusi
2015-03-27 12:01   ` Andy Shevchenko
2015-03-30 17:37     ` Vinod Koul
2015-04-28 11:17       ` 'Greg Kroah-Hartman'
2015-05-04 11:04         ` Vinod Koul
2015-05-07 16:26   ` Andy Shevchenko
2015-03-27 11:35 ` [PATCH 5/5] dmaengine: moxart-dma: " Peter Ujfalusi
2015-03-30 17:49   ` Vinod Koul

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