Date: Thu, 9 Mar 1995 07:30:59 +0100 (MET) From: J Wunsch <j@uriah.heep.sax.de> To: freebsd-current@FreeBSD.org (FreeBSD-current users) Subject: Hanging proc waiting for ttyout Message-ID: <199503090631.HAA05968@uriah.heep.sax.de>
next in thread | raw e-mail | index | archive | help
Every now and then, some process hangs in such a state: 107 5766 5765 0 4 0 688 72 ttyout IEs+ p6- 0:02.25 elm In this case, i've accidentally viewed some binary data in this elm, which has been running in a separate xterm (started with xterm -e elm). Somehow the xterm got confues about the garbage, i hit several keys (can't remember all of them :), until the xterm finally went stuck. It didn't accept anything, so i killed the xterm via the window manager. This resulted in the above state, which i've also seen already for processes running on a modem tty, when the modem dropped the line (this has been under 1.1.5.1 though, but the symptoms are identical). There must be some possible deadlock situation when a process is revoked its controlling tty while it is just exiting. Did anyone else see this? Is there any chance to avoid this? -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ Never trust an operating system you don't have sources for. ;-)
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199503090631.HAA05968>