Re: [Xen-devel] Re: DomU panic in net_rx_action *initiated by another DomU*; 7503:20d1a79ebe31

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 2 Nov 2005, at 13:54, Charles Duffy wrote:

> > I think this issue is at least approximately understood, and is 
> > present
> > in all xen x86_64 kernels:
> > rogue read-only mappings to linux heap pages left over from the 
> > 'initial
> > mapping' are preventing the netfront driver unmapping pages to hand 
> > over
> > as rx free buffers. This is compounded by the failure handling path
> > being slightly borked.
> I'm sorry to be a bother -- but is there any ETA on a fix, or a 
> bugzilla entry by which I can track this issue? The only 
> netfront-related checkin I see to bugzilla is a fix for bug#183, and 
> that appears to be distinct (I'm not getting the "#### netfront can't 
> alloc rx grant refs", and so would appear not to be hitting that 
> code).
> This is happening quite frequently for me, even when I'm *not* using 
> the kernel with the unstable module which triggers it every time.
> If there is no bugzilla entry, I'd be glad to start one -- but since 
> the issue is described as already understood, it sounds like there's 
> likely already a bug for it that I'm just not seeing.
If latest unstable still exhibits this bug, you should definitely open 
a bugzilla entry.
 -- Keir


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