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

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Message-ID: <20180130220052.jotc4orxnzi6s3nx@pd.tnic>
Date:   Tue, 30 Jan 2018 23:00:52 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Tim Chen <tim.c.chen@...ux.intel.com>
Cc:     Josh Poimboeuf <jpoimboe@...hat.com>,
        David Woodhouse <dwmw@...zon.co.uk>, arjan@...ux.intel.com,
        tglx@...utronix.de, karahmed@...zon.de, x86@...nel.org,
        linux-kernel@...r.kernel.org, peterz@...radead.org,
        pbonzini@...hat.com, ak@...ux.intel.com,
        torvalds@...ux-foundation.org, gregkh@...ux-foundation.org,
        mingo@...nel.org, luto@...nel.org, linux@...inikbrodowski.net
Subject: Re: [PATCH] x86/speculation: Use Indirect Branch Prediction Barrier
 in context switch

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().

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.

-- 
Regards/Gruss,
    Boris.

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