regression: msk0 watchdog timeout and interrupt storm

[Yonghyeon PYUN]

On Fri, Nov 01, 2013 at 02:33:06PM +0400, Boris Samorodov wrote:
> 01.11.2013 09:05, Yonghyeon PYUN пишет:
> > On Thu, Oct 31, 2013 at 11:05:37PM +0400, Boris Samorodov wrote:
> >> 31.10.2013 17:33, Boris Samorodov пишет:
> >>> 30.10.2013 06:16, Yonghyeon PYUN пишет:
> >>>> On Tue, Oct 29, 2013 at 05:38:27PM +0400, Boris Samorodov wrote:
> >>>
> >>>>> >From time to time I use a notebook and boot FreeBSD from USB
> >>>>> stick. FreeBSD 9.2-i386 works OK. So I tried to use
> >>>>> FreeBSD 10.0-i386 BETA2 and the network adapter works for
> >>>>> some 10-15 seconds and then stops with diagnostic message
> >>>>> "msk0:watchdog timeout". I've found similar case at
> >>>>> freebsd-current@ with no workaround. Yes, there is an
> >>>>> interrupt storm as well.
> >>>>
> >>>> There had been no functional changes for very long time so I'm not
> >>>> sure what's going on here.  I've attached local change I have at
> >>>> this moment but I'm afraid it wouldn't address the issue above.
> >>>>
> >>>> I recall jhb also reported interrupt storm in the past but the root
> >>>> cause was not identified yet.  Could you change msk_intr() and let
> >>>> me know which interrupt is firing?
> >>>
> >>> I've yet to organize a build.
> >>
> >> Success! The system is up, fetching and uploading for an hour now.
> >> No more watchdog timeouts, storms and freeses (stable/10, i386,
> >> r257422M, modified by your patch).
> > 
> > Committed in r257490.
> > Thanks a lot for reporting and testing!
> 
> Great, thank you.
> 
> With hope it's not too late to MFC the change before 10.0 is released.

FYI: MFC done. 10.0 will ship the change.