Reviewed-by: Mikko Perttunen mperttunen@nvidia.com

On 23.04.2018 12:54, Dmitry Osipenko wrote:

If IOVA allocation or IOMMU mapping fails, dma_free_wc() is invoked with size=0 because of a typo, that triggers "kernel BUG at mm/vmalloc.c:124!".

Signed-off-by: Dmitry Osipenko digetx@gmail.com

drivers/gpu/host1x/cdma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/host1x/cdma.c b/drivers/gpu/host1x/cdma.c index 93df28228721..0724122afeac 100644 --- a/drivers/gpu/host1x/cdma.c +++ b/drivers/gpu/host1x/cdma.c @@ -127,7 +127,7 @@ static int host1x_pushbuffer_init(struct push_buffer *pb) iommu_free_iova: __free_iova(&host1x->iova, alloc); iommu_free_mem:

• dma_free_wc(host1x->dev, pb->alloc_size, pb->mapped, pb->phys);

• dma_free_wc(host1x->dev, size, pb->mapped, pb->phys);

  return err;

}