From: Thomas Gleixner <tglx@linutronix.de>
To: Borislav Petkov <bp@alien8.de>
Cc: Tim Chen <tim.c.chen@linux.intel.com>,
Josh Poimboeuf <jpoimboe@redhat.com>,
David Woodhouse <dwmw@amazon.co.uk>,
arjan@linux.intel.com, karahmed@amazon.de, x86@kernel.org,
linux-kernel@vger.kernel.org, peterz@infradead.org,
pbonzini@redhat.com, ak@linux.intel.com,
torvalds@linux-foundation.org, gregkh@linux-foundation.org,
mingo@kernel.org, luto@kernel.org, linux@dominikbrodowski.net
Subject: Re: [PATCH] x86/speculation: Use Indirect Branch Prediction Barrier in context switch
Date: Tue, 30 Jan 2018 23:21:58 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.20.1801302309440.2293@nanos> (raw)
In-Reply-To: <20180130220052.jotc4orxnzi6s3nx@pd.tnic>
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
next prev parent reply other threads:[~2018-01-30 22:21 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-29 22:04 [PATCH] x86/speculation: Use Indirect Branch Prediction Barrier in context switch David Woodhouse
2018-01-30 17:48 ` Josh Poimboeuf
2018-01-30 21:23 ` Tim Chen
2018-01-30 22:00 ` Borislav Petkov
2018-01-30 22:21 ` Thomas Gleixner [this message]
2018-01-30 22:55 ` Borislav Petkov
2018-01-31 3:59 ` Josh Poimboeuf
2018-01-31 23:25 ` Tim Chen
2018-01-30 20:38 ` Borislav Petkov
2018-01-30 21:03 ` Tim Chen
2018-01-30 21:57 ` Borislav Petkov
2018-01-30 22:26 ` Tim Chen
2018-01-30 22:43 ` Borislav Petkov
2018-01-31 0:25 ` Tim Chen
2018-01-31 0:41 ` Borislav Petkov
2018-01-30 22:39 ` [tip:x86/pti] " tip-bot for Tim Chen
2018-01-31 7:03 ` Dominik Brodowski
2018-01-31 13:24 ` Josh Poimboeuf
2018-02-01 8:25 ` Christian Brauner
2018-02-01 8:31 ` David Woodhouse
2018-02-01 15:40 ` Josh Poimboeuf
2018-02-04 19:39 ` Dominik Brodowski
2018-02-05 14:18 ` David Woodhouse
2018-02-05 19:35 ` Tim Chen
2018-02-05 19:35 ` Tim Chen
-- strict thread matches above, loose matches on Subject: below --
2018-01-29 11:33 [PATCH] " David Woodhouse
2018-01-29 12:28 ` Dominik Brodowski
2018-01-29 12:44 ` David Woodhouse
2018-01-29 13:56 ` Dominik Brodowski
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