Hi Geert,
please try Linus' current tree. It has a fix from Andrey Smirnov for what looks the same problem that you reported.
- [PATCH 3/3] dma-mapping: introduce a dma_co... Christoph Hellwig
- [PATCH 2/3] dma-mapping: always use VM_DMA_... Christoph Hellwig
- cleanup vmap usage in the dma-mapping layer Christoph Hellwig
- [PATCH 2/4] dma-mapping: always use VM... Christoph Hellwig
- [PATCH 1/4] vmalloc: lift the arm flag... Christoph Hellwig
- Re: [PATCH 1/4] vmalloc: lift the ... Russell King - ARM Linux admin
- Re: [PATCH 1/4] vmalloc: lift ... Christoph Hellwig
- [PATCH 3/4] dma-mapping: introduce a d... Christoph Hellwig
- Re: [PATCH 3/4] dma-mapping: intro... Geert Uytterhoeven
- Re: [PATCH 3/4] dma-mapping: i... Robin Murphy
- Re: [PATCH 3/4] dma-mapping: i... Christoph Hellwig
- Re: [PATCH 3/4] dma-mappin... Geert Uytterhoeven
- [PATCH 4/4] arm: remove wrappers for t... Christoph Hellwig
