Date: Sat, 18 Aug 2001 14:12:25 +0300 From: Valentin Nechayev <netch@iv.nn.kiev.ua> To: Leo Bicknell <bicknell@ufp.org> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: Very odd tty hanging problem. Message-ID: <20010818141225.B1393@iv.nn.kiev.ua> In-Reply-To: <20010813214818.A84958@ussenterprise.ufp.org>; from bicknell@ufp.org on Mon, Aug 13, 2001 at 09:48:18PM -0400 References: <20010813214818.A84958@ussenterprise.ufp.org>
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Mon, Aug 13, 2001 at 21:48:18, bicknell (Leo Bicknell) wrote about "Very odd tty hanging problem.": > >From another window, try to kill the processes as a user, no effect > with -9 or regular. Try to kill them as root, no effect normal. Kill > them -9 as root, and all but the first shell will go away, here's > ps output from an earlier occurance: > > PID TT STAT TIME COMMAND > 20986 p0- IEs+ 0:00.08 -tcsh (tcsh) 'E' means "trying to exit". It already finished any userspace executing, is in kernel phase, and waits for something. "STATE" below shows wait channel. But I saw many times processes in this state with _null_ wait channel. Such semi-zombie is almost always responsible to remove via terminating of its parent. IMO most probable variant that there is some uncaught race condition. But I failed to find it. > And top of the same: > > PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU CPU COMMAND > 20986 bicknell 4 0 1344K 908K ttywai 1 0:00 0.00% 0.00% tcsh /netch To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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