On Sun, 19 Jun 2005, Robert Watson wrote:
there is a PR for it : kern/74319
This sounds very similar to a serial console related tty bug I was
experiencing on -STABLE a few months ago, and that is believed may have been
worked around in 5.4 tweaks before release. In particular, that there are
reference counting related bugs in the 5.x tty code that are fixed by a
partial rewrite of the tty code in 6.x, but that are too large and disruptive
to merge to RELENG_5. If the problem is persisting, it may be worth trying
to merge anyway, but it is a pretty big change and would break device driver
binary compatibility, etc. What we might want to do here is wait until 6.x
has settled out a bit more, then consider merging it to 5.x once 6.x has
gotten burned in with similar workloads and continued to not illustrate the
5.x tty reference bugs.
On Fri, 24 Jun 2005, Doug White wrote:
I've run out of time to debug this, unfortunately...
I went back to reports I made in January about 5.3:
http://lists.freebsd.org/pipermail/freebsd-stable/2005-January/010898.html
which appears to be the same issue. I _thought_ this was resolved when I
disabled HT, but maybe I was just lucky between the last reboot and the 5.4
upgrade.
It sounds like there's a reasonable chance this has been squashed in code
for 6.0? Since this box is already unstable, I'd be tempted to be an early 6
adopter to see if it is actually resolved. Especially so if that would be
helpful to the cause.
Otherwise, I guess I need to look at going back to 4.X or 5.2.1, which were
completely stable on this box. I have time to deal with this over the next 6
weeks, but much less so after that.
Any suggestions?
Mitch Parks
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