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Re: Audit not recording the correct syscall return value in Fedora 10?



On Tuesday 05 May 2009 03:34:43 pm Tony Jones wrote:
> On Tue, May 05, 2009 at 03:20:52PM -0400, Paul Moore wrote:
> > On Tuesday 05 May 2009 03:07:36 pm Tony Jones wrote:
> > > On Tue, May 05, 2009 at 02:22:04PM -0400, Paul Moore wrote:
> > > > I believe Matt Anderson (CC'd) reported the bug you are referring to
> > > > and the workaround I posted seemed to fix the issue for him.  I've
> > > > stopped looking
> > >
> > > I'll check it out, I see the commit:
> > > 6d208da89aabee8502debe842832ca0ab298d16d
> >
> > Well, that commit does solve a return value problem on 64 bit systems but
> > it isn't the workaround I was referring to ... the mail which I sent that
> > started this thread (April 7, 2009) has a small patch to
> > arch/x86/kernel/entry_64.S to load the return value directly from the
> > stack and not %rax to workaround the corruption issue.
>
> Sorry, my bad. I went back to grab the code snippet to check if it was in
> git put pulled it from your earlier (Apr 1) thread by mistake. That said, I
> think it's the issue I'm seeing on x86_64 but I'll try the calling sequence
> fix also.
>
> So what is the status of the entry_64.S fix? Did discussion go beyond this
> list?
>
> Apologies for the confusion.

No problem.  As far as I'm aware the discussion never went beyond this thread 
as I was unable to recreate the problem with the (then) current kernels but it 
may not be a bad idea to get the arch folks and perhaps lkml involved if we 
can narrow this down a little.

-- 
paul moore
linux @ hp


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