[ Upstream commit 283f1e383e91d96fe652fad549537ae15cf31d60 ]
unmap_udmabuf fails to actually unmap the scatterlist, leaving dangling mappings around.
Fixes: fbb0de795078 ("Add udmabuf misc device") Signed-off-by: Lucas Stach l.stach@pengutronix.de Link: http://patchwork.freedesktop.org/patch/msgid/20190604202331.17482-1-l.stach@... Signed-off-by: Gerd Hoffmann kraxel@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/dma-buf/udmabuf.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c index cd57747286f2..9635897458a0 100644 --- a/drivers/dma-buf/udmabuf.c +++ b/drivers/dma-buf/udmabuf.c @@ -77,6 +77,7 @@ static void unmap_udmabuf(struct dma_buf_attachment *at, struct sg_table *sg, enum dma_data_direction direction) { + dma_unmap_sg(at->dev, sg->sgl, sg->nents, direction); sg_free_table(sg); kfree(sg); }