RE: [Xen-devel] [UPDATE] Xen crashes

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> The crash I reported last week (dma_map_single for net I/O in guest
> domain) appears to be fixed in changeset 6726 however the 
> dom0 MM crash triggered by resizetextmode (from svgalib) is 
> still there.  Reproducing this is very easy.  Boot Xen, run 
> "resizetextmode -w foo" in dom0 and bang.

Please can you post the boot log including the e820 map. Also, please
can you determine how resizetextmode is accessing the VGA device. strace
should do the trick.

It seems to want to access address 0a5f9000 which is pretty odd.

Ian

> (XEN) (file=/xen/xen-unstable/xen/include/asm/mm.h, line=201) 
> Error pfn
> a5f9: rd=ffbfa900, od=00000000, caf=00000000, taf=00000000
> (XEN) (file=/xen/xen-unstable/xen/include/asm/mm.h, line=201) 
> Error pfn
> a5f9: rd=ffbfa900, od=00000000, caf=00000000, taf=00000000
> (XEN) DOM0: (file=mm.c, line=2935) ptwr: Could not re-validate l1 page
> (XEN) Domain 0 (vcpu#0) crashed on cpu#0:
> (XEN) CPU:    0
> (XEN) EIP:    0061:[<c015e577>]
> (XEN) EFLAGS: 00000246   CONTEXT: guest
> (XEN) eax: 0000000e   ebx: b37e3000   ecx: fe27003f   edx: 00000000
> (XEN) esi: 00000000   edi: fe27003f   ebp: b37e3000   esp: c350fe78
> (XEN) cr0: 8005003b   cr3: 032ec000
> (XEN) ds: 007b   es: 007b   fs: 0000   gs: 0033   ss: 0069   cs: 0061
> (XEN) Guest stack trace from esp=c350fe78:
> ...
> 
> 
> -Dave
> 
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