linux-kernel - Re: NOHZ: WARNING: at arch/x86/kernel/smp.c:123 native_smp_send

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: <20130510092811.GA22942@pd.tnic>
Date:	Fri, 10 May 2013 11:28:11 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Jiri Kosina <jkosina@...e.cz>, Tony Luck <tony.luck@...el.com>,
	linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: NOHZ: WARNING: at arch/x86/kernel/smp.c:123
 native_smp_send_reschedule

On Fri, May 10, 2013 at 02:29:31AM +0200, Frederic Weisbecker wrote:
> @@ -616,8 +616,17 @@ static bool wake_up_full_nohz_cpu(int cpu)
>  {
>  	if (tick_nohz_full_cpu(cpu)) {
>  		if (cpu != smp_processor_id() ||
> -		    tick_nohz_tick_stopped())
> +		    tick_nohz_tick_stopped()) {
> +			if (!cpu_online(cpu)) {
> +				static int printed = 0;
> +				if (!printed) {
> +					printk("%d %d\n", cpu, smp_processor_id());
> +					dump_stack();
> +					printed = 1;

You know about printk_once, right? We even have all the pr_<level>_once
macros.

:-)

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
--
--
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/