Re: vm86 segfaults with NX bit

[H. Peter Anvin]

Takashi Iwai wrote:
> > > >
> > > did the code that mapped this memory setup use PROT_EXEC ?
> > A good question...
> > Luc, Egbert, how does VESA driver handle it?
>
> Just looking through the vesa directory of xorg-server code, PROT_EXEC
> is passed for all mappings, at least.
>
> Please correct me if I'm looking at a wrong place...

Please do an strace of the X server startup up to the point of the crash.

I am betting that PROT_EXEC is missing from an mmap(), or that it needs 
an additional mprotect().

	-hpa

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