Re: A page fault in subr_turnstile.c:propogate_priority()

From: Brian F. Feldman <green_at_FreeBSD.org>
Date: Mon, 08 Dec 2003 16:57:14 -0500
John Baldwin <jhb_at_FreeBSD.org> wrote:
> 
> On 06-Dec-2003 Brian F. Feldman wrote:
> > John Baldwin <jhb_at_FreeBSD.org> wrote:
> >> 
> >> On 03-Dec-2003 Igor Sysoev wrote:
> >> > On Wed, 3 Dec 2003, John Baldwin wrote:
> >> > 
> >> >> > With a patch from http://www.FreeBSD.org/~jhb/patches/turnstile.patch
> >> >> > I can not even rebuild kernel. Can I add MPASS to sources from
> >> >> > 2003.11.28.00.00.00 ?
> >> >> 
> >> >> Ok, I've just updated turnstile.patch again.  I was testing a bogus
> >> >> condition in my earlier patch. :/  This patch has survived for a while
> >> >> now on my test machine that was panic'ing with the earlier patch, so
> >> >> try giving this patch a try against stock CVS sources and see if it
> >> >> clears up all your panics.  Thanks.
> >> > 
> >> > I added MPASS to sources from 2003.11.28.00.00.00 and since then the system
> >> > made 3 builds of the world. I think it would panic tomorrow or so. I'll
> >> > get crash dump and then try your new patch. Can I apply the new patch
> >> > to sources from 2003.11.28.00.00.00 or I need to cvsup to more recent data ?
> >> 
> >> New patch should probably work fine with those sources.  If you still
> >> get panics, you can try removing the extra MPASS(), and applying
> >> turnstile2.patch.  It adds some debugging printf's that would be
> >> very helpful in tracking down the bug.  Thanks.
> > 
> > I think this may have totally fixed the insta-reboots (no core dump) that 
> > I've been suffering from!
> 
> Which patch fixed things, just turnstile.patch by itself?

Neeeeeevermind.  It hasn't made that problem any worse or better.  My SMP is 
just very hoseable right now and I need to bring a serial console (laptop) 
home so I can try to get ddb if I can't get crash dumps.


-- 
Brian Fundakowski Feldman                           \'[ FreeBSD ]''''''''''\
  <> green_at_FreeBSD.org                               \  The Power to Serve! \
 Opinions expressed are my own.                       \,,,,,,,,,,,,,,,,,,,,,,\
Received on Mon Dec 08 2003 - 12:57:15 UTC

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