Re: Linux 2.6.17-rc2

[Andi Kleen]

On Saturday 22 April 2006 02:53, Alistair John Strachan wrote:

> > > Alistair, if you can do a "git bisect" on this one, that would help.
> >
> > If noexec32=off doesn't help please do.
> > If noexec32 helps then it's likely a wine bug for using the wrong
> > protections.
> 
> [alistair] 01:52 [~] uname -rm
> 2.6.17-rc2 x86_64
> 
> [alistair] 01:52 [~] cat /proc/cmdline
> vga=794 root=/dev/sda1 quiet noexec32=off
> 
> [alistair] 01:51 [~/.wine/drive_c/Program Files/Warcraft III] wine 
> war3.exe -opengl
> err:ole:CoCreateInstance apartment not initialised
> fixme:advapi:SetSecurityInfo stub
> 
> Aaand wine suddenly starts working again.

Ok. There is a way to change this at runtime for individual 
processes too (using personality), but most distros seem 
to miss the user tools for that so far.

> Looks like a bug in WINE; is there  
> any additional information required before I can file a bug report on this 
> one? Thanks.

They probably forget to set PROT_EXEC in either mprotect or mmap somewhere.
You can check in /proc/*/maps which mapping contains the address it is faulting
on and then try to find where it is allocated or mprotect'ed.

-Andi
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