linux-kernel - Re: [PATCH RT 2/2 v4] preempt-rt/x86: Delay calling signals in int3

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20120206162532.GA6951@redhat.com>
Date:	Mon, 6 Feb 2012 17:25:32 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	linux-kernel@...r.kernel.org,
	linux-rt-users <linux-rt-users@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Carsten Emde <C.Emde@...dl.org>,
	John Kacur <jkacur@...hat.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Alexander van Heukelum <heukelum@...tmail.fm>,
	Andi Kleen <ak@...ux.intel.com>,
	Clark Williams <williams@...hat.com>,
	Luis Goncalves <lgoncalv@...hat.com>, stable-rt@...r.kernel.org
Subject: Re: [PATCH RT 2/2 v4] preempt-rt/x86: Delay calling signals in int3

On 02/06, Steven Rostedt wrote:
>
> On Sun, 2012-02-05 at 20:31 +0100, Oleg Nesterov wrote:
> > Damn. Sorry for noise...
> >
> > On 02/05, Oleg Nesterov wrote:
> > >
> > > +int force_sig_info(int sig, struct siginfo *info, struct task_struct *t)
> > > +{
> > > +#ifdef CONFIG_PREEMPT_RT_FULL
> > > +	if (in_atomic()) {
> > > +		if (WARN_ON_ONCE(t != current))
> >
> > This is certainly wrong in upstream kernel. It does use force_
> > this way although it shouldn't imho.
>
> It's wrong in upstream even with the #ifdef define here?

No, the patch has no effect if !CONFIG_PREEMPT_RT_FULL.

Oleg.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/