Date: Tue, 2 Oct 2007 15:02:25 +0200 From: Ed Schouten <ed@fxq.nl> To: Vlad GALU <dudu@dudu.ro> Cc: Dag-Erling =?iso-8859-1?Q?Sm=F8rgrav?= <des@des.no>, FreeBSD Hackers <freebsd-hackers@freebsd.org>, Steven Hartland <killing@multiplay.co.uk>, freebsd-stable@freebsd.org, gepu@flow.rdsnet.ro Subject: Re: How to enable more than 256 pty's? Message-ID: <20071002130225.GR12364@hoeg.nl> In-Reply-To: <20071002125702.GQ12364@hoeg.nl> References: <00ab01c8040c$7c408160$b6db87d4@multiplay.co.uk> <012101c804e5$efa7e9c0$b6db87d4@multiplay.co.uk> <86abr1yb68.fsf@ds4.des.no> <ad79ad6b0710020514n41d70cd9k6f16164899a7290c@mail.gmail.com> <86641pyanc.fsf@ds4.des.no> <ad79ad6b0710020519o30ee6478j38c0229a9746d10@mail.gmail.com> <ad79ad6b0710020537j28827d5ex19113dd395b4cc73@mail.gmail.com> <86wsu5wuz3.fsf@ds4.des.no> <ad79ad6b0710020541n22dbdfabgb13cd84eca8d8011@mail.gmail.com> <20071002125702.GQ12364@hoeg.nl>
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--8CNmCRe8Sh4keFKJ Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable * Ed Schouten <ed@fxq.nl> wrote: > * Vlad GALU <dudu@dudu.ro> wrote: > > On 10/2/07, Dag-Erling Sm=F8rgrav <des@des.no> wrote: > > > "Vlad GALU" <dudu@dudu.ro> writes: > > > > The symptoms were exhibited even with rev. 1.16. I've CC'ed him so > > > > he can catch up with the thread. > > > > > > Which symptoms? I can no longer reproduce the hang-on-close bug. > >=20 > > Strangely enough, me neither. In his case, allocated pts' wouldn't > > get deallocated once the sessions ended. >=20 > This is a known issue IIRC. See line 245 of tty_pts.c 1.16. Can be > easily reproduced by killing the sshd while apps are still running in > the shell. >=20 > I thought we weren't able to destroy the device there, because you can't > destroy a TTY when it is used by an application (i.e. when it's the > controlling terminal). Thought about this 2 seconds after I sent my message: this is also responsible for the `zombie jails': tty's are made with make_dev_cred, which causes ucred's to be leaked, which eventually causes prisons to be leaked. --=20 Ed Schouten <ed@fxq.nl> WWW: http://g-rave.nl/ --8CNmCRe8Sh4keFKJ Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) iD8DBQFHAkFh52SDGA2eCwURAo5gAJ9hrgjycx8KCSDaMMCAYWO9TAFoaQCggExV nLwhxxIHRHwW/UNjLqqKHKI= =8+HJ -----END PGP SIGNATURE----- --8CNmCRe8Sh4keFKJ--
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