linux-kernel - Re: [PATCH] dmaengine: virt-dma: Fix access after free in vcna

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Message-ID: <20191223075257.GD2536@vkoul-mobl>
Date:   Mon, 23 Dec 2019 13:22:57 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Peter Ujfalusi <peter.ujfalusi@...com>
Cc:     dan.j.williams@...el.com, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org, alexandru.ardelean@...log.com,
        s.hauer@...gutronix.de
Subject: Re: [PATCH] dmaengine: virt-dma: Fix access after free in
 vcna_complete()

On 20-12-19, 15:11, Peter Ujfalusi wrote:
> vchan_vdesc_fini() is freeing up 'vd' so the access to vd->tx_result is
> via already freed up memory.
> 
> Move the vchan_vdesc_fini() after invoking the callback to avoid this.

Applied, thanks

-- 
~Vinod