Re: [Xen-devel] [PATCH v8.1 17/27] xsplice: Add support for bug frames.

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 22.04.16 at 12:54, <konrad.wilk@xxxxxxxxxx> wrote:
> The thing that makes it "safe" (in lieu of your comment about
> re-ordering) is that the trap code does:
> 
> 1289     /* WARN, BUG or ASSERT: decode the filename pointer and line 
> number. */
> 1290     filename = bug_ptr(bug);
> 1291     if ( !is_kernel(filename) && !is_patch(filename) )
> 1292         goto die;
> 
> Which means we first try 'is_kernel'. Since the list addition cannot be
> part of the payload it will always be part of the hypervisor.

I'm sorry, but no. The bug hit (and hence the referenced file name)
may be in some other payload, requiring list traversal.

Jan


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