Date: Sun, 7 Jul 2002 13:56:34 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Darren Pilgrim <dmp@pantherdragon.org> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: OpenSSH v3.4_p1 sshd exits on signal 11? Message-ID: <20020707125634.GA21479@happy-idiot-talk.infracaninophi> In-Reply-To: <3D2827A7.CC4FF662@pantherdragon.org> References: <3D279634.EEBDBE6B@pantherdragon.org> <20020707101932.GA20900@happy-idiot-talk.infracaninophi> <3D2827A7.CC4FF662@pantherdragon.org>
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On Sun, Jul 07, 2002 at 04:36:07AM -0700, Darren Pilgrim wrote:
> openssh-portable with -DOPENSSH_OVERWRITE_BASE. Attached is my
> sshd_config.
Yup. What you say below clears openssh of the blame. I think that
your problem is hardware failure.
> memtest86.org doesn't resolve. I did, however, install memtest from
> ports, which coredumps with the invocation of "memtest all -log":
Yeah --- my mistake. I meant to type www.memtest86.com
memtest from ports isn't quite the same thing --- memtest86 is a
standalone program that you boot your whole machine into from floppy or
cdrom. Works with any i386 hardware irrespective of operating sytem.
> This reminds me, when I did a buildworld, the make exited signal 11
> and the machine panic'ed. Earlier today, doing making a kernel -j4
> segfaulted the machine as well. I pulled the memory and ran it
> through a tester which showed it to be all fine and meeting the PC133
> spec. It's a Crucial Tech part, so it wouldn't be hard to get it
> replaced.
Classic signs of a hardware fault. It's usually attributed to "bad
memory" but as you've been able to test your memory using a hardware
tester (which is the only way to get 100% certainty on the answers)
you should start to look elsewhere.
At this point I'd be peering suspiciously at the CPU. Faults in the
on-board cache memory will have the same effects as in the system RAM.
However, before swapping out your processor, double check that it's
being kept properly cool. Aside from the obvious "are the fans
working", make sure that the heatsink is correctly mounted and that
the thermal pad or thermal grease between it and the actual chip are
providing good contact.
> At this point, though, I want to investigate this. I already have a
> debug kernel in place because I'm testing kernel HFS support, but I
> need to rebuild memtest and openssh_portable with debug symbols. How
> do I do that?
CFLAGS= -O -g
in /etc/make.conf When you do a port build and install, the installed
binaries will be stripped, but an unstripped version should be
available in the work directory in the ports tree which you can use
for debugging.
Matthew
--
Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks
Savill Way
Tel: +44 1628 476614 Marlow
Fax: +44 0870 0522645 Bucks., SL7 1TH UK
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