Re: [FFmpeg-devel] [PATCH] avutil/hwcontext_drm: Check ioctl in drm_map_frame() for failure

[Michael Niedermayer <michael@niedermayer.cc>]

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On Mon, May 20, 2024 at 11:33:41AM +0200, Andreas Rheinhardt wrote:
> Michael Niedermayer:
> > Fixes: CID1583742 Unchecked return value
> > 
> > Sponsored-by: Sovereign Tech Fund
> > Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> > ---
> >  libavutil/hwcontext_drm.c | 5 ++++-
> >  1 file changed, 4 insertions(+), 1 deletion(-)
> > 
> > diff --git a/libavutil/hwcontext_drm.c b/libavutil/hwcontext_drm.c
> > index 0847db09a08..e080c0597b8 100644
> > --- a/libavutil/hwcontext_drm.c
> > +++ b/libavutil/hwcontext_drm.c
> > @@ -166,7 +166,10 @@ static int drm_map_frame(AVHWFramesContext *hwfc,
> >  #if HAVE_LINUX_DMA_BUF_H
> >          /* We're not checking for errors here because the kernel may not
> >           * support the ioctl, in which case its okay to carry on */
> > -        ioctl(desc->objects[i].fd, DMA_BUF_IOCTL_SYNC, &sync_start);
> > +        if (ioctl(desc->objects[i].fd, DMA_BUF_IOCTL_SYNC, &sync_start) == -1) {
> > +            err = AVERROR(errno);
> > +            goto fail;
> > +        }
> >  #endif
> >      }
> >      map->nb_regions = i;
> 
> Did you read the comment above the code?

Apparently not

patch droped, will mark this as intentional

thx

[...]
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Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

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