Subject: Re: Getting "TLB IPI rendezvous failed..."
To: Stephan Uphoff <email@example.com>
From: Manuel Bouyer <firstname.lastname@example.org>
Date: 01/21/2005 11:53:08
On Thu, Jan 20, 2005 at 01:40:48PM +0100, Manuel Bouyer wrote:
> Here it is. Still pipe related, but what the second CPU was doinG at the
> same time is interesting:
> CPU 1 (the one that paniced):
> CPU 0:
> I just noticed that I didn't have lockdebug enabled in this kernel :(
> I'll install a new one for the next panic.
LOCKDEBUG didn't bring anything more.
The new panic I got tonight:
A few things to notice:
- it seems it's always CPU1 which panics, and cpu0 which holds the lock
- even though pipe didn't appear in this trace, it's still related to
amanda backups, which makes an heavy use of pipes
- again it had about 500M free RAM when it paniced
- cpu0 seems to always come from a soft clock interrupt
- the recent changes to protect IPIs with splclock() cause the traces to
be different. With 2.0, CPU 0 was stuck with a tsleep()/mi_switch()
in the path.
Anything else I can try to help debug this ?
Manuel Bouyer <email@example.com>
NetBSD: 26 ans d'experience feront toujours la difference