[PATCH v2] ALSA: hda: handle UAF at probe error

[Das, Nirmoy]

On 4/15/2022 9:27 AM, Takashi Iwai wrote:
> On Thu, 14 Apr 2022 20:24:37 +0200,
> Nirmoy Das wrote:
>> Call snd_card_free_on_error() on probe error instead of
>> calling snd_card_free() which should handle devres call orders.
> This won't change any practical behavior, because HD-audio driver
> doesn't use snd_devm_card_new().

OK, I guess I am looking into some timing dependent issue because with the

patch I didn't see the UAF.


Thanks,

Nirmoy


>   snd_card_free() still gets called
> explicitly in the relevant code paths.
>
>> Issues: https://gitlab.freedesktop.org/drm/intel/-/issues/5701
> So it must be a different cause for this problem...
>
>
> thanks,
>
> Takashi