linux-kernel - Re: 2.6.24-git2: Oracle 11g VKTM process enters R state on startup and is unkillable [still broken in 2.6.25-rc1]

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]

Date:	Tue, 12 Feb 2008 00:12:34 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Alessandro Suardi <alessandro.suardi@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: 2.6.24-git2: Oracle 11g VKTM process enters R state on startup and is unkillable [still broken in 2.6.25-rc1]

On Monday, 11 of February 2008, Ingo Molnar wrote:
> 
> * Ingo Molnar <mingo@...e.hu> wrote:
> 
> > no, they were not lost, they just didnt pass QA here (they crashed on 
> > a particularly hard to debug 8-way box i have) and Peter worked on 
> > that queue of fixes up until today to get it really correct. Could you 
> > check:
> > 
> >    git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched.git
> > 
> > combo patch below as well - whichever you prefer. The shortlog can be 
> > found below as well - but i dont yet consider this pullable, i'd like 
> > it to see pass a full night of randconfig tests on my test-systems.
> 
> ok, we just found the reason for the 8-way crash, the delta fix from 
> Peter is below if any of you have tried the previous combo patch. 
> Updated sched.git as well, new HEAD is 
> fec13e45305d69fd0bd23b30bd05a0a42cf341f8.

With the previous patch and this patch applied, the issue is not reproducible
here.

Thanks,
Rafael


> Index: linux-2.6/kernel/sched.c
> ===================================================================
> --- linux-2.6.orig/kernel/sched.c
> +++ linux-2.6/kernel/sched.c
> @@ -219,6 +219,10 @@ static void start_rt_bandwidth(struct rt
>  	if (rt_b->rt_runtime == RUNTIME_INF)
>  		return;
>  
> +	if (hrtimer_active(&rt_b->rt_period_timer))
> +		return;
> +
> +	spin_lock(&rt_b->rt_runtime_lock);
>  	for (;;) {
>  		if (hrtimer_active(&rt_b->rt_period_timer))
>  			break;
> @@ -229,6 +233,7 @@ static void start_rt_bandwidth(struct rt
>  			      rt_b->rt_period_timer.expires,
>  			      HRTIMER_MODE_ABS);
>  	}
> +	spin_unlock(&rt_b->rt_runtime_lock);
>  }
>  
>  #ifdef CONFIG_RT_GROUP_SCHED
> 
> 
--
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/