On Sat, Jan 19, 2008 at 12:34:37AM +0100, Jesper Louis Andersen wrote:
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> On Jan 18, 2008 1:08 PM, Kostik Belousov <kostikbel@gmail.com> wrote:
>=20
>=20
> > After your post, I could imagine the almost plausible scenario how to
> > get more then one /dev/tty in the listing, but the other behaviour that
> > looks like deadlock, isn't.
> >
>=20
> Well, your commit here:
>=20
> http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/kern/tty_pty.c.diff?r1=3D1.=
155;r2=3D1.156
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>=20
> gratiously provided to me by Peter Wemm solved the problem I had. I think=
 we
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> are "talking past each other" with the lockup due to my bad choice of wor=
ds:
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> The kernel did not deadlock, but a process executed after having multiple
> tty's made that process hang with the ktrace I posted. The kernel itself
> were still running fine though anything in need of /dev/tty would hang. I
> hope this clears up the misconceptions.
>=20
> The patch fixes my problem completely. Thanks!

Thank you for confirming that the problem solved.
I will MFC the change shortly.