Messages in this thread | | | Date | Tue, 01 Jan 2019 09:34:14 +0100 | From | Takashi Iwai <> | Subject | Re: [PATCH] sound: atom: fix a missing check of snd_pcm_lib_malloc_pages |
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On Wed, 26 Dec 2018 18:57:47 +0100, Pierre-Louis Bossart wrote: > > > On 12/25/18 8:29 PM, Kangjie Lu wrote: > > snd_pcm_lib_malloc_pages() may fail, so let's check its status and > > return its error code upstream. > > Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
This fixes a potential kernel Oops. Mark, please put Cc to stable when applying.
thanks,
Takashi
> > > > > > Signed-off-by: Kangjie Lu <kjlu@umn.edu> > > --- > > sound/soc/intel/atom/sst-mfld-platform-pcm.c | 8 +++++++- > > 1 file changed, 7 insertions(+), 1 deletion(-) > > > > diff --git a/sound/soc/intel/atom/sst-mfld-platform-pcm.c b/sound/soc/intel/atom/sst-mfld-platform-pcm.c > > index afc559866095..91a2436ce952 100644 > > --- a/sound/soc/intel/atom/sst-mfld-platform-pcm.c > > +++ b/sound/soc/intel/atom/sst-mfld-platform-pcm.c > > @@ -399,7 +399,13 @@ static int sst_media_hw_params(struct snd_pcm_substream *substream, > > struct snd_pcm_hw_params *params, > > struct snd_soc_dai *dai) > > { > > - snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params)); > > + int ret; > > + > > + ret = > > + snd_pcm_lib_malloc_pages(substream, > > + params_buffer_bytes(params)); > > + if (ret) > > + return ret; > > memset(substream->runtime->dma_area, 0, params_buffer_bytes(params)); > > return 0; > > } >
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