On Wed, 15 Apr 2009 10:27:48 -0700 Dan Williams <dan.j.williams@xxxxxxxxx> wrote: > On Wed, Apr 15, 2009 at 5:39 AM, Alexander Beregalov > <a.beregalov@xxxxxxxxx> wrote: > > 2009/4/9 Alexander Beregalov <a.beregalov@xxxxxxxxx>: > >> ioatdma 0000:00:08.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 > >> ioatdma 0000:00:08.0: setting latency timer to 64 > >> ioatdma 0000:00:08.0: Intel(R) I/OAT DMA Engine found, 4 channels, > >> device version 0x12, driver version 3.64 > >> alloc irq_desc for 33 on cpu 0 node 0 > >> alloc kstat_irqs on cpu 0 node 0 > >> ioatdma 0000:00:08.0: irq 33 for MSI/MSI-X > >> ------------[ cut here ]------------ > >> WARNING: at lib/dma-debug.c:565 check_unmap+0x2f6/0x6a0() > >> Hardware name: PowerEdge 1950 > >> ioatdma 0000:00:08.0: DMA-API: device driver frees DMA memory with > >> wrong function [device address=0x000000007f76f800] [size=2000 bytes] > >> [map > >> ped as single] [unmapped as page] > > > > The problem still persists. > > Thanks for the report Alexander. Maciej and I are looking into a fix. Looks like the driver uses pci_unmap_page() to unmap the region previously mapped by dma_map_single(), right? It's not the proper usage of DMA API but it doesn't cause any problems. This is not a urgent issue though it's better to fix it. -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
