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Date: Wed, 3 Dec 2003 19:26:42 +0300 (MSK)
From: Igor Sysoev <is@rambler-co.ru>
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To: John Baldwin <jhb@freebsd.org>
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cc: freebsd-current@freebsd.org
Subject: Re: A page fault in subr_turnstile.c:propogate_priority()
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On Wed, 3 Dec 2003, Igor Sysoev wrote:

> On Wed, 3 Dec 2003, John Baldwin wrote:
> 
> > 
> > On 03-Dec-2003 Igor Sysoev wrote:
> > > On Wed, 3 Dec 2003, John Baldwin wrote:
> > > 
> > >> On 03-Dec-2003 Brian F. Feldman wrote:
> > >> > Igor Sysoev <is@rambler-co.ru> wrote:
> > >> >> I'd cvsup'ed 5.1-CURRENT from 2003.11.04.02.02.00 up to
> > >> >> 2003.11.28.00.00.00 with the turnstile support and it can still
> > >> >> causes sometimes a page fault in propogate_priority().
> > >> >> I have core dump and can send debug output.
> > >> > 
> > >> > Go ahead and load up kernel.debug and the core dump in gdb -k, and show us 
> > >> > the backtrace.  Also, do you have any idea about more specific circumstances 
> > >> > that will cause this problem?  Thanks!
> > >> 
> > >> Actually, please try http://www.FreeBSD.org/~jhb/patches/turnstile.patch
> > > 
> > > I've applied patch.
> > > Now it's a second fault.
> > 
> > This is the same fault.  Did you just apply this patch today or did
> > you apply an earlier version of it a while ago?  I just updated it
> > two days ago.
> 
> In <Pine.BSF.4.21.0312031726420.24397-100000@is> I sent trace before
> the patch. It seems to me that it's singe fault.
> 
> Then I applied patch I saw the double fault. This trace I sent in
> <Pine.BSF.4.21.0312031855400.24397-100000@is>.

Sorry, I missed your question. I've got and applied the patch today.


Igor Sysoev
http://sysoev.ru/en/