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

Thomas Gleixner
2008-03-01T14:29:22Z

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)