SIGSEGV in lots of processes (head i386 @r237440)

[Konstantin Belousov]

On Fri, Jun 22, 2012 at 06:49:59AM -0700, David Wolfskill wrote:
> Just updated my laptop's head slice from r237378 to r237440; while
> it did manage to get to multi-user mode, I was only able to login as
> root, and whenever I tried to do much of anything, the sell (csh) exited
> with a SIGSEGV.
> 
> I finally gave it a "3-fingered salute", [Ctl-Alt-Del], and init
> appeared to enter a non-terminating SIGSEGV loop.
> 
> My build machine is still building the kernel; assuming(!) I see similar
> behavior on that, I should be able to poke around a bit, as I have a
> serial console on it (though I'll be remote from it, as I'll be at
> work).
> 
> Anyway, I thought I'd mention this in case it might help someone.
> 
> The typescript from the "svn update" and the resulting build may be
> found at <http://www/~david/FreeBSD/head_r237440.txt>.
This is on i386, right ?

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) ?
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