use of menus crashes Firefox?

Rob Farmer rfarmer at
Fri Jan 21 01:05:18 UTC 2011

On Thu, Jan 20, 2011 at 16:43, Keith Seyffarth <weif at> wrote:
>> Doing a "bt" would have been helpful right about there, but I think I've got enough info to suggest rebuilding your kernel with the following option:
>> options         P1003_1B_SEMAPHORES
> thanks again, Chuck.
> I can easily get the bt if needed, but I looked into rebuilding the
> kernel. It looks like I need to first update the source tree. I think I
> can see how to do that with cvsup, but if I do that, am I going to be
> trying to build an 8.3 kernel to run in a 7.2 environment? I suspect
> that would not have the desired end result of a running computer...
> Or should I just build the kernel with what's currently in /usr/src?

So have you tried this?


Firefox 3.6 and HTML5

Certain functions used to display HTML5 elements need the sem module.

If your Firefox crashes with the following message while viewing a
HTML5 page:
"Bad system call (core dumped)"

you need to load the sem module (kldload sem).

To load sem on every boot put the following into your


Rob Farmer

More information about the freebsd-questions mailing list