Re: [Xen-ia64-devel] crash while unpacking tar.bz/tar.gz archives

[Isaku Yamahata <yamahata@xxxxxxxxxxxxx>]

On Wed, Aug 08, 2007 at 02:55:16PM +0200, Jan Werner wrote:
...
> [<a0000001004f2ef0>] __copy_user+0x890/0x960
>                                sp=e00000001b87fd90 bsp=e00000001b879330
...
> does anybody have an idea whats wrong?

I suppose that you're using xen 3.1 release.
The kernel seems to use x86 swiotlb because of __copy_user().
Does upgrading linux kernel or applying the following c/s help?

changeset:   119:5684370b1c4d
user:        kfraser@xxxxxxxxxxxxxxxxxxxxx
date:        Mon Jul 09 20:15:53 2007 +0100
summary:     swiotlb: Allow sync on arbitrary offsets into dma-mapped region.

changeset:   118:5a4e93508aa0
user:        kfraser@xxxxxxxxxxxxxxxxxxxxx
date:        Mon Jul 09 20:00:19 2007 +0100
summary:     swiotlb: Keep offset in a page strictly smaller than PAGE_SIZE.

changeset:   117:f15643dab1ca
user:        kfraser@xxxxxxxxxxxxxxxxxxxxx
date:        Mon Jul 09 19:41:04 2007 +0100
summary:     swiotlb: Handle sync invocations on subregions of a mapped region.

changeset:   111:08cf42135056
user:        kfraser@xxxxxxxxxxxxxxxxxxxxx
date:        Mon Jul 09 13:45:10 2007 +0100
summary:     x86: dma_map_sg() must handle multi-page segments.

-- 
yamahata

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