Hi Patrick
Thanks a lot, it really works. I applied this patch to my 2.2.16 kernel.
But the only issue is that if I do a sigwait on my main thread, to catch all
signals ( my server works this way. Main thread is supposed to get all
signals.) , the same thing happens. ie. manager thread becomes defunc.
Any idea?
--jaimon
----- Original Message -----
From: "Patrick D Wildi" <news@wildi.com>
To: "Yahoo Account" <jjaimon@yahoo.com>
Cc: <linux-kernel@vger.rutgers.edu>
Sent: Friday, July 21, 2000 11:01 PM
Subject: Re: linuxThreads and coredumps
> On Fri, 21 Jul 2000, Yahoo Account wrote:
>
> > Hi,
> > I would like to get proper core files in my linux multithreaded
application if I get
> > any signals like segv, sigbus etc. Currently either manager threads
becomes
> > 'defunct' or the main thread dumps core which is useless since we can't
know the faulty location. ( I agree that this is according to
> > the Linux thread documentatiion) But this makes developement very
difficult
> > since we don't know the actual reason for the application to crash.
> >
> > I appreciate any kind of help
>
> Here is a HACK I use to get around the problem. It abuses a
> bit in mm->def_flags. It sets that for the first thread that
> faults (normally the culprit) and dumps that one and none other.
> It is against 2.2.13, but should work with later 2.2.x versions.
>
> Patrick
>
> > thanks,
> > -jcj
>
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This archive was generated by hypermail 2b29 : Sun Jul 23 2000 - 21:00:20 EST