Re: Arm v7 RPi2 -current unresponsive to debugger escape during buildworld

On Mon, Nov 10, 2025 at 07:39:51AM -0800, bob prohaska wrote:

>Did the machine hang entirely? If so, how did you recover control?

locked solid. rebooted.

The machine responded ok interactively until that point.

I don't know what would cause a stack overflow, a programming error maybe?
After rebooting, resuming the buildkernel with -j2 allowed it to complete.

The reasoning behind using nfs for /usr/src /usr/obj and /var/cache/ccache
from another machine is that it's so much faster and responsive than 
usb2 on rpi2b+ which seems to get bogged down with reads/writes on usb2
(same effect seen when using git to update).

When using nfs this way the machine is always responsive for interactive 
work.

But, I had to abandon testing in the end due to 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=275030

which wasn't triggered with a buildkernel/installkernel, but was with a
buildworld. The patch in comment #3 didn't fix the problem for me
(16:current)
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