freebsd stable - Jun 2017 - 11.1-BETA3 uhub probes on warm boot triggers endless reboot cycle

Hi,

I've got a dual boot system at home, booting into Windows 10 for
games. I've noticed that since I updated to 11.1-BETA3, a reboot from
Windows into FreeBSD results in a endless reboot cycle. In order to
reboot FreeBSD, I have to cold-boot. The endless reboot cycle appears
to be triggered when the kernel attempts to talk to "uhub", at which
point it reboots, and the cycle repeats. No kernel panics, no crash
cores.

The issue is not a biggie, other than the time it takes for me to
power down completely, wait for capacitors to discharge completely,
and then cold boot the machine. However, I thought I'd bring it to the
notice of list.

Cheers.
-- 
Jonathan Chen <jonc at chen.org.nz>

On Fri, Jun 30, 2017 at 10:23:26AM +1200, Jonathan Chen
wrote:
> Hi,
> 
> I've got a dual boot system at home, booting into Windows 10 for
> games. I've noticed that since I updated to 11.1-BETA3, a reboot from
> Windows into FreeBSD results in a endless reboot cycle. In order to
> reboot FreeBSD, I have to cold-boot. The endless reboot cycle appears
> to be triggered when the kernel attempts to talk to "uhub", at
which
> point it reboots, and the cycle repeats. No kernel panics, no crash
> cores.
> 
> The issue is not a biggie, other than the time it takes for me to
> power down completely, wait for capacitors to discharge completely,
> and then cold boot the machine. However, I thought I'd bring it to the
> notice of list.
> 
Thank you for the report.  Could you please open a PR about this?

Glen

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