linux-kernel - Re: Panic 2.6.24-3 NMI Watchdog detected LOCKUP on CPU 0

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:	Mon, 3 Mar 2008 08:17:02 -0500
From:	Ed Tomlinson <edt@....ca>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Panic 2.6.24-3 NMI Watchdog detected LOCKUP on CPU 0

Thomas,

I have booted many times over the weekend.  I've yet to trigger the watchdog.   Since I used to see problems 
in 1 in 3 or 4 boots,  I think you fixed the problem with patch below.

Thanks
Ed

On March 1, 2008, Thomas Gleixner wrote:
> On Sat, 1 Mar 2008, Ed Tomlinson wrote:
> > Hi,
> > 
> > I have been seeing these since I installed .24 kernels.  It does not seem to matter if I change the clocksource from tsc
> > to apci_pm.  Its happened with all .24 kernels I have tried starting with stock 2.6.24 upto 2.6.24-gentoo-r2 + 2.6.24-3
> > 
> > Ideas?
> 
> Questions first. Is there a particular reason to use idle=poll ?
> 
> Idea: does the patch below help ?
> 
> Thanks,
> 	tglx
> 
> ---
> 
>  arch/x86/kernel/process_64.c |    3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> Index: linux-2.6.24/arch/x86/kernel/process_64.c
> ===================================================================
> --- linux-2.6.24.orig/arch/x86/kernel/process_64.c
> +++ linux-2.6.24/arch/x86/kernel/process_64.c
> @@ -212,14 +212,13 @@ void cpu_idle (void)
>  	current_thread_info()->status |= TS_POLLING;
>  	/* endless idle loop with no priority at all */
>  	while (1) {
> +		tick_nohz_stop_sched_tick();
>  		while (!need_resched()) {
>  			void (*idle)(void);
>  
>  			if (__get_cpu_var(cpu_idle_state))
>  				__get_cpu_var(cpu_idle_state) = 0;
>  
> -			tick_nohz_stop_sched_tick();
> -
>  			rmb();
>  			idle = pm_idle;
>  			if (!idle)
> 
> 


--
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/