On Wed, Oct 24 2007, FUJITA Tomonori wrote:
> On Tue, 23 Oct 2007 20:49:40 +0530
> Kamalesh Babulal <[email protected]> wrote:
>
> > Hi,
> >
> > Kernel oops is triggered while running fsx-linux test, followed by cpu softlock
> > over the AMD box
> >
> > Unable to handle kernel NULL pointer dereference at 0000000000000018 RIP:
> > [<ffffffff8021f2f6>] gart_map_sg+0x26c/0x406
> > PGD 10185b067 PUD 10075b067 PMD 0
>
> Does this work?
>
>
> diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
> index c56e9ee..ae7e016 100644
> --- a/arch/x86/kernel/pci-gart_64.c
> +++ b/arch/x86/kernel/pci-gart_64.c
> @@ -338,7 +338,6 @@ static int __dma_map_cont(struct scatterlist *start, int nelems,
>
> BUG_ON(s != start && s->offset);
> if (s == start) {
> - *sout = *s;
> sout->dma_address = iommu_bus_base;
> sout->dma_address += iommu_page*PAGE_SIZE + s->offset;
> sout->dma_length = s->length;
> @@ -365,7 +364,7 @@ static inline int dma_map_cont(struct scatterlist *start, int nelems,
> {
> if (!need) {
> BUG_ON(nelems != 1);
> - *sout = *start;
> + sout->dma_address = start->dma_address;
> sout->dma_length = start->length;
> return 0;
> }
> --
> 1.5.2.4
Care to write up a proper changelog?
--
Jens Axboe
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