Hi Sakari,
[snip]
> > > > > fail_stop_pipeline:
> > > > > @@ -543,6 +546,8 @@ static void ipu3_vb2_stop_streaming(struct
> > > > vb2_queue *vq)
> > > > > dev_err(>pci_dev->dev,
> > > > > "failed to stop subdev streaming\n");
> > > > >
> > > > > +
Hi Sakari,
> Subject: Re: [PATCH] media: staging/intel-ipu3: Implement lock for stream
> on/off operations
>
> Hi Raj,
>
> On Wed, Jan 30, 2019 at 05:17:15PM +, Mani, Rajmohan wrote:
> > Hi Sakari,
> >
> > > -Original Message-
>
; hverk...@xs4all.nl; tf...@chromium.org
> > Subject: Re: [PATCH] media: staging/intel-ipu3: Implement lock for stream
> > on/off operations
> >
> > Hi Rajmohan,
> >
> > On Tue, Jan 29, 2019 at 02:27:36PM -0800, Rajmohan Mani wrote:
> > > Currently concurrent
; hverk...@xs4all.nl; tf...@chromium.org
> > Subject: Re: [PATCH] media: staging/intel-ipu3: Implement lock for stream
> > on/off operations
> >
> > Hi Rajmohan,
> >
> > On Tue, Jan 29, 2019 at 02:27:36PM -0800, Rajmohan Mani wrote:
> > > Currently concurrent
osuosl.org; linux-ker...@vger.kernel.org; Laurent Pinchart
> ; Jacopo Mondi ;
> Qiu, Tian Shu ; Cao, Bingbu
> ; z...@paasikivi.fi.intel.com; Zhi, Yong
> ; hverk...@xs4all.nl; tf...@chromium.org
> Subject: Re: [PATCH] media: staging/intel-ipu3: Implement lock for stream
> on/off operation
Hi Rajmohan,
On Tue, Jan 29, 2019 at 02:27:36PM -0800, Rajmohan Mani wrote:
> Currently concurrent stream off operations on ImgU nodes are not
> synchronized, leading to use-after-free bugs (as reported by KASAN).
>
> [ 250.090724] BUG: KASAN: use-after-free in ipu3_dmamap_free+0xc5/0x116
>
Currently concurrent stream off operations on ImgU nodes are not
synchronized, leading to use-after-free bugs (as reported by KASAN).
[ 250.090724] BUG: KASAN: use-after-free in ipu3_dmamap_free+0xc5/0x116
[ipu3_imgu]
[ 250.090726] Read of size 8 at addr 888127b29bc0 by task yavta/18836
[
