Date: Wed, 27 Oct 2004 03:00:44 GMT From: Ken Smith <kensmith@cse.Buffalo.EDU> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/72979: unkillable process(es) stuck in `STOP' state Message-ID: <200410270300.i9R30i5d049239@freefall.freebsd.org>
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The following reply was made to PR kern/72979; it has been noted by GNATS. From: Ken Smith <kensmith@cse.Buffalo.EDU> To: David Xu <davidxu@freebsd.org> Cc: Mikhail Teterin <mi+mx@aldan.algebra.com>, Michael Nottebrock <michaelnottebrock@gmx.net>, re@freebsd.org, davidxu@t2t2.com, davidxu@viatech.com.cn, freebsd-gnats-submit@freebsd.org Subject: Re: kern/72979: unkillable process(es) stuck in `STOP' state Date: Tue, 26 Oct 2004 22:53:05 -0400 --5mCyUwZo2JvN/JJP Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Oct 26, 2004 at 07:11:54PM +0800, David Xu wrote: > Mikhail Teterin wrote: >=20 > >David, would you take a look at this? Some apps sometimes end up=20 > >unkillable: > > > >http://www.freebsd.org/cgi/query-pr.cgi?pr=3D72979 > > > >If you provide an encouraging answer quick enough, we may even be able t= o=20 > >persuade re@ to hold the release long enough for you to fix it. Thanks! > > > >-mi > > > I had committed a change about 3 days ago, this might fix the problem,=20 > can you > try ? >=20 > http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/kern/kern_exit.c.diff?r1=3D= 1.250&r2=3D1.251&f=3Dh >=20 > David Xu David, I think I have successfully tested your fix. Even if it doesn't wind up fixing these problems it does fix something that shouldn't happen. Please commit to RELENG_5 and RELENG_5_3. If you are too busy to do it can you let me know please? I'll do it if you can't. We're making progress on the other big show-stopper problem and might have a resolution to that as early as tomorrow (if a patch doesn't work at least we know the root cause of a hang and can tell people how to avoid it; but a patch that might fix the cause of the hang is being tested). We're thinking about doing a mini-RC2 just to test out these things and hopefully be ready to re-roll the release when the conference is over and people return home. Knowing the fix it's trivially easy to do something that should not happen: % gdb prog # can be anything gdb> break main gdb> run gdb> ^Z % ps % kill <pid of gdb> Process for prog will be left behind and can't be killed. With David's patch process for prog dies along with gdb. Thanks... --=20 Ken Smith - From there to here, from here to | kensmith@cse.buffalo.edu there, funny things are everywhere. | - Theodore Geisel | --5mCyUwZo2JvN/JJP Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.2 (SunOS) iD8DBQFBfw2O/G14VSmup/YRAm65AJwLdHfdSQJF5PN82MMyfa01nTknzQCffcGW EdNmGeogzX6PaOT2e/vJBfc= =GcZV -----END PGP SIGNATURE----- --5mCyUwZo2JvN/JJP--
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