On Sat, 18 Jun 2005, Philippe PEGON wrote:
Unfortunately this is a known bug in FreeBSD; check the archives for
more discussion. Doug White tried to look at fixing it before
5.4-RELEASE but I think he gave up.
do you know if someone works on it ? I sent two mail in freebsd-stable
about it without solution and this bug is really annoying :
http://lists.freebsd.org/mailman/htdig/freebsd-stable/2005-June/015952.html
and
http://lists.freebsd.org/mailman/htdig/freebsd-stable/2005-June/015864.html
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.
Robert N M Watson
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