Date: Thu, 28 Oct 2004 00:34:28 +0400 From: Vladimir Grebenschikov <vova@sw.ru> To: Ken Smith <kensmith@cse.Buffalo.EDU> Cc: "current@freebsd.org" <current@freebsd.org> Subject: Re: Unkillable process Message-ID: <1098909268.1132.3.camel@localhost> In-Reply-To: <20041027193133.GA27473@electra.cse.Buffalo.EDU> References: <1098870425.1062.14.camel@localhost> <417F9483.7040003@freebsd.org> <1098880551.1062.20.camel@localhost> <1098880647.1062.22.camel@localhost> <20041027193133.GA27473@electra.cse.Buffalo.EDU>
next in thread | previous in thread | raw e-mail | index | archive | help
=F7 =D3=D2, 27/10/2004 =D7 15:31 -0400, Ken Smith =D0=C9=DB=C5=D4:
> On Wed, Oct 27, 2004 at 04:37:27PM +0400, Vladimir Grebenschikov wrote:
>=20
> > Looks like I should upgrade to 1.251:
> >=20
> > diff -u -r1.251 -r1.250
> > --- sys/kern/kern_exit.c 23 Oct 2004 11:20:26 -0000 1.251
> > +++ sys/kern/kern_exit.c 5 Oct 2004 18:51:11 -0000 1.250
> > @@ -403,7 +403,7 @@
> > * since their existence means someone is screwing up.
> > */
> > if (q->p_flag & P_TRACED) {
> > - q->p_flag &=3D ~(P_TRACED | P_STOPPED_TRACE);
> > + q->p_flag &=3D ~P_TRACED;
> > psignal(q, SIGKILL);
> > }
>=20
> Yes, but before you do... :-)
>=20
> If it's not too late can you do:
>=20
> ps -o f -l
>=20
> Or if anyone "succeeds" at wedging processes (especially if you
> already have the above patch applied) can you try this?
Sorry, it is too late, also I had no patch applied.
I guess my case can be reproduced by killing -KILL gdb attached to
stopped process. With updated kernel process being debugged disapper
with gdb.
> I have a trivial procedure that produces unkillable processes
> before the above patch, and this patch fixes that case. I've got
> one person reporting that he can still get wedged processes even
> with the above patch though so I'm looking for a bit more information.
>=20
> Thanks...
>=20
--=20
Vladimir B. Grebenschikov
SWsoft Inc. vova@sw-soft.com
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?1098909268.1132.3.camel>