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Date:      Mon, 21 Dec 2009 10:06:34 -0500
From:      John Baldwin <jhb@freebsd.org>
To:        "Steven Hartland" <killing@multiplay.co.uk>
Cc:        freebsd-hackers@freebsd.org, freebsd-stable@freebsd.org
Subject:   Re: Passenger hangs on live and SEGV on tests possible threading /kernel bug?
Message-ID:  <200912211006.34216.jhb@freebsd.org>
In-Reply-To: <35611FAF2F4045E19AF1DD70C1286D84@multiplay.co.uk>
References:  <DD0B1DB4EEAE4FB49FFFE1FDF5E9D7E3@multiplay.co.uk> <200912181009.51798.jhb@freebsd.org> <35611FAF2F4045E19AF1DD70C1286D84@multiplay.co.uk>

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On Monday 21 December 2009 9:45:53 am Steven Hartland wrote:
> ----- Original Message ----- 
> From: "John Baldwin" 
> >> I've uploaded a two more traces for the oxt test failure / segv.
> >> http://code.google.com/p/phusion-passenger/issues/detail?id=441#c1
> >> 
> >> >From looking at the test case it testing the capture of failures and its ability
> >> to create a stack trace output so that may give others some indication where
> >> the issue may be?
> >> 
> >> I will look to do the same on for the hang issue but that's on a live site so
> >> will need to schedule some downtime before I can get those rebuilt and then
> >> wait for it to hang again, which could be quite some time :(
> > 
> > Hmmm, the only seg fault I see is happening down inside libgcc in the stack
> > unwinding code and that is 3rd party code from gcc.
> 
> Thanks for looking John, so you believe this may be an issue with the gcc code?
> 
> What would be the next step on this, raise it on a gcc mail list or something?

I'm not sure. :)  That may be best.  You could also try examining the
registers and assembly to see if you can figure out more of what is going on
when it dies.

-- 
John Baldwin



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