ARM/kirkwood: v3.12-rc6: kernel BUG at mm/util.c:390!

On Mon, Oct 28, 2013 at 10:13 PM, Simon Baatz [off-list ref] wrote:

On Sun, Oct 27, 2013 at 07:51:15PM +0800, Ming Lei wrote:

quoted

diff --git a/lib/scatterlist.c b/lib/scatterlist.c
index a685c8a..eea8806 100644
--- a/lib/scatterlist.c
+++ b/lib/scatterlist.c

@@ -577,7 +577,7 @@ void sg_miter_stop(struct sg_mapping_iter *miter)
              miter->__offset += miter->consumed;
              miter->__remaining -= miter->consumed;

-             if (miter->__flags & SG_MITER_TO_SG)
+             if ((miter->__flags & SG_MITER_TO_SG) && !PageSlab(page))

This is what I was going to propose, but I would have used
!PageSlab(miter->page) ;-)

OK, I will send a formal one later, thank you for pointing out the above, :-)

quoted

                      flush_kernel_dcache_page(miter->page);

With this, a kernel with DEBUG_VM now boots on Kirkwood.

Thanks,
-- 
Ming Lei