Re: [BProc] Re: deadlock with 2.4.21/3.2.6

[Nicholas H. <he...@se...>]

On Tue, 2003-10-21 at 11:54, er...@he... wrote:
> I got an oops out of the NMI watchdog which was enlightening (or at
> least indicated which code was at fault).  The following patch may
> have fixed it for me.  I say "may have" since I've had some trouble
> reproducing the problem reliably.
> 
> This patch turns off "sigbypass" which is a little optimization where
> a process sending a signal to a ghost doesn't bother the ghost.
> Instead it just throws a signal forwarding message right on the
> message queue.  I'm not sure how the code is broken.  I haven't had
> time to look into it yet.
> 
> Please give it a try and let me know if you still see the deadlock.

Thanks for the quick patch, I am running now to see if it deadlocks.

BTW -- did you do anything special to get NMI to dump an oops for you?
Can you tell me the basic setup -- I am just booting with
nmi_watchdog=1, and I see the interrupts in /proc/interrupts. Does
something more need to be done ?

Thanks!
Nic 
-- 
Nicholas Henke
Penguin Herder & Linux Cluster System Programmer
Liniac Project - Univ. of Pennsylvania