On Sat, Jul 11, 2020 at 4:04 AM Takashi Iwai <tiwai@xxxxxxx> wrote:
>
> On Sat, 11 Jul 2020 09:08:30 +0200,
> Navid Emamdoost wrote:
> >
> > In the implementation of snd_trident_create(), the allocated trident is
> > leaked if snd_trident_mixer() fails. Release via snd_trident_free().
>
> No, this patch would result in double-free.
>
> The manual release of trident object isn't needed once after it gets
> added via snd_device_new(). Then it'll be automatically released at
> the error path (via snd_trident_dev_free()).
Thanks for the clarification.
>
>
> thanks,
>
> Takashi
>
> >
> > Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
> > Signed-off-by: Navid Emamdoost <navid.emamdoost@xxxxxxxxx>
> > ---
> > sound/pci/trident/trident_main.c | 5 ++++-
> > 1 file changed, 4 insertions(+), 1 deletion(-)
> >
> > diff --git a/sound/pci/trident/trident_main.c b/sound/pci/trident/trident_main.c
> > index 6e50376163a2..e98c692f6aa9 100644
> > --- a/sound/pci/trident/trident_main.c
> > +++ b/sound/pci/trident/trident_main.c
> > @@ -3582,8 +3582,11 @@ int snd_trident_create(struct snd_card *card,
> > return err;
> > }
> >
> > - if ((err = snd_trident_mixer(trident, pcm_spdif_device)) < 0)
> > + err = snd_trident_mixer(trident, pcm_spdif_device);
> > + if (err < 0) {
> > + snd_trident_free(trident);
> > return err;
> > + }
> >
> > /* initialise synth voices */
> > for (i = 0; i < 64; i++) {
> > --
> > 2.17.1
> >
--
Navid.
