SIGSEGV in lots of processes (head i386 @r237440)

[David Wolfskill]

On Fri, Jun 22, 2012 at 06:22:16PM +0300, Konstantin Belousov wrote:
> ...
> > > found at <http://www/~david/FreeBSD/head_r237440.txt>.
> > This is on i386, right ?

Yes.

> > Can you boot single-user and just type date in the shell ?
> > Does it segfault ?
> > 
> > If yes, does setting sysctl kern.timecounter.fast_gettime to 0 fix
> > segfault from date(1) ?
> 
> Ok, I probably can guess the cause. I suppose that 'date' does not
> segfaults.

Correct; it did not.

> Please try the following (which I forgot to commit). Sorry.
> 
> diff --git a/sys/i386/i386/machdep.c b/sys/i386/i386/machdep.c
> index f0546b0..30efecd 100644
> --- a/sys/i386/i386/machdep.c
> +++ b/sys/i386/i386/machdep.c
> > ...

That seems to bring behavior back to normal:  I can now log in via ssh
(vs. having sshd segfault & coredump):

FreeBSD freebeast.catwhisker.org 10.0-CURRENT FreeBSD 10.0-CURRENT #851 237440M: Fri Jun 22 08:42:54 PDT 2012     root at freebeast.catwhisker.org:/usr/obj/usr/src/sys/GENERIC  i386

Thank you very much for the quick response, despite my rather vague
hand-waving.  And I apologize for not directly responding to your
earlier note -- I have no connectivity during most of my commute.  (And
we really don't want me trying it for the part on my bicycle!)

Peace,
david
-- 
David H. Wolfskill				david at catwhisker.org
Depriving a girl or boy of an opportunity for education is evil.

See http://www.catwhisker.org/~david/publickey.gpg for my public key.
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