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Date:      Tue, 2 Jun 1998 10:05:43 +1000 (EST)
From:      Ernie Elu <ernie@eis.net.au>
To:        dwhite@resnet.uoregon.edu
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Bypassing login.conf
Message-ID:  <199806020005.KAA25797@tinny.eis.net.au>
In-Reply-To: <Pine.BSF.3.96.980601143457.15962x-100000@gdi.uoregon.edu> from Doug White at "Jun 1, 98 02:35:24 pm"

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Hi Doug,
you wrote
> On Mon, 1 Jun 1998, Ernie Elu wrote:
> 
> > Can some suggest a generic entry for login.conf that allows all users access
> > to all resources.
> > 
> > The reason is simple, my servers are starting to cordump a lot on random
> > different programs (perl, mysqld, named, sendmail)and I can't track it down. 
> > It's not hardware, and I presume 2.2.6-RELEASE is robust, so I figure it's 
> > a resource limit of some sort so I want to  turn the limits off to see if
> > the faults go away.
> 
> Run `unlimit' first.  What error are they dumping on? You'll get other
> notices if it's hitting limits.
> 

Most seem to be dumping on 11 which I think is a SIGSEGV

May  1 22:00:04 tinny /kernel: pid 15781 (perl), uid 0: exited on signal 11 (core dumped)
May  2 19:55:55 tinny /kernel: pid 27866(named), uid 0: exited on signal 11 (core dumped)
May  5 06:02:30 tinny /kernel: pid 26686 (perl), uid 0: exited on signal 11 (core dumped)
May 14 06:47:28 tinny /kernel: pid 17581 (perl), uid 0: exited on signal 11 (core dumped)
May 20 18:33:14 tinny /kernel: pid 22365 (perl), uid 0: exited on signal 11 (core dumped)
May 20 19:33:04 tinny /kernel: pid 24254 (perl), uid 0: exited on signal 11 (core dumped)
May 20 20:18:29 tinny /kernel: pid 25761 (perl), uid 0: exited on signal 11 (core dumped)
May 21 04:47:24 tinny /kernel: pid 13830 (perl), uid 0: exited on signal 11 (core dumped)
May 21 14:04:00 tinny /kernel: pid 7360  (perl), uid 0: exited on signal 11 (core dumped)
May 22 17:03:51 tinny /kernel: pid 21381(named), uid 0: exited on signal 11 (core dumped)
May 23 02:03:16 tinny /kernel: pid 8691  (perl), uid 0: exited on signal 11 (core dumped)
May 23 13:21:40 tinny /kernel: pid 465  (mysql), uid 0: exited on signal  3 (core dumped)
May 29 22:17:11 tinny /kernel: pid 24532 (perl), uid 0: exited on signal 11 (core dumped)
May 30 13:14:28 tinny /kernel: pid 8555 (named), uid 0: exited on signal 11 (core dumped)
May 31 14:47:02 tinny /kernel: pid 19596 (perl), uid 0: exited on signal 11 (core dumped)
Jun  1 10:32:12 tinny /kernel: pid 12255 (perl), uid 0: exited on signal 11 (core dumped)

I don't have the expertise to read a core dump so I tried the obvious first, swapping the
drive into a different machine, grabbing a fresh source and doing a make world and kernel
rebuild. Then I grabbed the 2.2-STABLE release and tried again. I also set maxusers  50
in the kernel config just in case.

The machine is our mail, dns, and authentication server for radius. Although it has no 
user shell accounts it can still get quite busy with many sendmails and perl scripts
running at once.

Any suggestions are welcome.

- Ernie.

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