[alsa-devel] [PATCH] pcm030-audio-fabric: Fix a memory leaking bug in pcm030_fabric_probe()

[Jon Hunter]

On 24/05/2019 03:12, Gen Zhang wrote:
> In pcm030_fabric_probe(), 'pdata->codec_device' is allocated by
> platform_device_alloc(). When this allocation fails, ENOMEM is returned.
> However, 'pdata' is allocated by devm_kzalloc() before this site. We
> should free 'pdata' before function ends to prevent memory leaking.
> 
> Similarly, we should free 'pdata' when 'pdata->codec_device' is NULL.
> And we should free 'pdata->codec_device' and 'pdata' when 'ret' is error
> to prevent memory leaking.
> 
> Signed-off-by: Gen Zhang <blackgod016574 at gmail.com>

I have seen several of these patches now, and this is not correct. I
think you need to understand how devm_kzalloc() works.

Jon

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