Re: [PATCH] x86/speculation: Use Indirect Branch Prediction Barrier in context switch

[Thomas Gleixner]

On Tue, 30 Jan 2018, Borislav Petkov wrote:

> On Tue, Jan 30, 2018 at 01:23:17PM -0800, Tim Chen wrote:
> > I'm less familiar with gpg-agent.  Dave was the one who
> > put in comments about gpg-agent in this patch so perhaps
> > he can comment.
> 
> So I looked at gpg-agent and AFAICT, it disables core dumping with
> setrlimit().

setrlimit() does not end up fiddling with the dumpable bits in
mm->flags. So no.

> I wasn't able to attach to it either with gdb but didn't find where we
> disable the attaching, for the couple of minutes I grepped through it.

prctl(PR_SET_DUMPABLE, 0)               = 0

That does the trick.

Thanks,

	tglx