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Date:      Fri, 9 Oct 2009 17:01:34 +0200
From:      Mel Flynn <mel.flynn+fbsd.hackers@mailing.thruhere.net>
To:        freebsd-hackers@freebsd.org
Cc:        Dag-Erling =?iso-8859-1?q?Sm=F8rgrav?= <des@des.no>
Subject:   Re: Running a program through gdb without "interfering"
Message-ID:  <200910091701.34788.mel.flynn%2Bfbsd.hackers@mailing.thruhere.net>
In-Reply-To: <200910091650.04231.mel.flynn%2Bfbsd.hackers@mailing.thruhere.net>
References:  <200910090015.24175.mel.flynn%2Bfbsd.hackers@mailing.thruhere.net> <86skds7vqi.fsf@ds4.des.no> <200910091650.04231.mel.flynn%2Bfbsd.hackers@mailing.thruhere.net>

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On Friday 09 October 2009 16:50:04 Mel Flynn wrote:
> On Friday 09 October 2009 11:38:29 Dag-Erling Sm=F8rgrav wrote:
> > Mel Flynn <mel.flynn+fbsd.hackers@mailing.thruhere.net> writes:

> > > [...] sudo *sometimes* segfaults [...] However, it doesn't dump core
> >
> > sudo(1) is setuid root.  You need to set kern.sugid_coredump to get it
> > to dump core.
>=20
> It still segfaults and doesn't dump:
> Oct  9 04:34:18 smell kernel: pid 39476 (sudo), uid 0: exited on signal 11
> Oct  9 04:36:32 smell kernel: pid 79657 (sudo), uid 0: exited on signal 11
> Oct  9 04:36:43 smell kernel: pid 82390 (sudo), uid 0: exited on signal 11
> Oct  9 04:51:46 smell kernel: pid 3601 (sudo), uid 0: exited on signal 11
>=20
> find / -name '*.core' in the jail does not yield anything.

=46YI, there's one read-only mount into the jail, being /usr/src. I don't s=
ee a=20
reason given the commands it segfaults on, for $cwd to be below that.For=20
example it segfaulted on sudo pkg_delete glproto2.
Thought I'd mention it to rule it out.=20
=2D-=20
Mel



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