Re: How do I disable coredumps on F12?

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Andre Costa wrote:
> Hi Ed,
>
> On Wed, Dec 9, 2009 at 01:57, Ed Greshko <Ed.Greshko@xxxxxxxxxxx
> <mailto:Ed.Greshko@xxxxxxxxxxx>> wrote:
>
>     Andre Costa wrote:
>     > Hi Rick, thks for the reply. Comments below:
>     >
>     > On Tue, Dec 8, 2009 at 23:12, Rick Stevens <ricks@xxxxxxxx
>     <mailto:ricks@xxxxxxxx>
>     > <mailto:ricks@xxxxxxxx <mailto:ricks@xxxxxxxx>>> wrote:
>     >
>     >     On 12/08/2009 03:44 PM, Andre Costa wrote:
>     >
>     >         Hi,
>     >
>     >         apps crashes are generating coredumps on /var/cache/abrt/* ;
>     >         since I
>     >         won't debug them myself and won't send them anywhere because
>     >         they're too
>     >         big, I would like to turn them off. I tried uncommenting
>     >
>     >         #*               soft    core            0
>     >
>     >         on /etc/security/limits.conf but it did not work, coredumps
>     >         were still
>     >         being generated.
>     >
>     >
>     >     I believe you need to reboot for that to take effect.
>     >
>     >
>     > I did that, to no avail :-(
>     >
>     >
>     >         Then I tried to set
>     >
>     >         MaxCrashReportsSize = 0
>     >
>     >         directly on /etc/abrt/abrt.conf, restarted abrtd but it
>     didn't
>     >         work
>     >         either (oddly enough abrt-gui doesn't allow changing this
>     >         setting, "ok"
>     >         button is disabled -- not even if I run it as root).
>     >
>     >         So, as a last resource I created a script on /etc/cron.daily
>     >         to get rid
>     >         of the coredumps, but I'd rather not create them in the
>     first
>     >         place.
>     >
>     >         Anyone could give a hand?
>     >
>     >
>     >     Well, you should also, as root:
>     >
>     >            echo 'fs.suid_dumpable = 0' >> /etc/sysctl.conf
>     >            sysctl -p
>     >
>     >     That prevents suid programs from creating core files.  You
>     should
>     >     also make sure that there is a line to the effect:
>     >
>     >            ulimit -S -c 0 >/dev/null 2>&1
>     >
>     >     is in /etc/profile so that all users have a core file dump
>     limit size
>     >     of 0 bytes.
>     >
>     >
>     > Cool, nice tips, will implement them and see if they finally free me
>     > from these damned coredumps =/ (IMHO there should be an easier
>     way of
>     > doing that, considering this is a "new" feature shipped with F12)
>     >
>     Have you tried simply turning off the abrtd service?
>
>
> That's definitely an option, and it already crossed my mind, but the
> thing is that I'd really like to contribute with bug reports. My
> problem is not abrt per se, I actually like the idea, but I just can't
> understand why it is not easy to turn off coredumps generation since
> they're useless -- the smallest one I've got was 15M, which AFAIK
> would never be accepted as a bugzilla attachment (and it can get
> worse: Firefox keeps generating 350-450M coredumps when it crashes...).
>
> So, ideally I would keep abrt around, and just turn off coredumps
> generation. But, if worse comes to worst, I will end up disabling it
> completely -- which I think will be a step back, but...
Ahhh....that doesn't make much sense., IHMO.

The abrtd service is designed to collect all the relevant information on
a crash and send it back for analysis.  Part of that relevant
information would be the coredump.  So, you want to remove a portion of
the relevant information?  Don't you think that would devalue the service?

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