On Tue, Sep 22, 2015 at 03:12:47PM +0100, Yong Wu wrote: > I would like to show you a problem I met, The recursion here may > lead to stack overflow while we test FHD video decode. > > From the log, I get the internal variable in the error case: the > "size" is 0x100000, the "iova" is 0xfea00000, but at that time the > "blk_size" is 0x1000 as it was the map of small-page. so it enter the > recursion here. > > After check the unmap flow, there is only a iommu_unmap in > __iommu_dma_unmap, and it won't check the physical address align in > iommu_unmap. That sounds like a bug in __iommu_dma_unmap. Robin? Will -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
