On Thu, Sep 15, 2016 at 7:05 PM, Zbigniew Jędrzejewski-Szmek
<zbys...@in.waw.pl> wrote:
> On Thu, Sep 15, 2016 at 08:52:03AM -0600, Chris Murphy wrote:
>> On Thu, Sep 15, 2016 at 8:17 AM, Michael Catanzaro <mcatanz...@gnome.org> 
>> wrote:
>> > Hi,
>> >
>> > Something between F23 and F24 broke coredumpctl in Fedora. It's still
>> > broken. Appears to be an SELinux bug. It's reported as [1]. I want
>> > coredumpctl to be enabled by default in F26 as a F26 feature, but I can
>> > hardly go ahead and propose that while it's still broken. It would be
>> > great if the SELinux developers could look into the issue. systemd
>> > developers have been responsive and already left several comments in
>> > the bug, but I've failed to get the attention of SELinux folks thus
>> > far.
>> I think that's only part of the problem. I regularly get: is not a
>> core dump: File format not recognized
>> I asked about it on systemd list and there's no reply. And very often
>> now I get this: More than one entry matches, ignoring rest.
> I replied to that other mail, but in general it seems that you're
> hitting some bug which prevent systemd-coredump from reading and saving
> a proper coredump. Or maybe you are looking at log entries for which
> the coredump is already gone? Try on of the ones which have '*'
> in the "present" column.

None have *

> Please have a look at the files in /var/lib/systemd/coredump.

Empty. I didn't empty it.

> Those should be normal (possibly lz4-compressed) coredumps, and
> gdb should be able to read them without any coredumpctl interaction.
>> I get the 'more than one entry matches'
> That is harmless, coredumpctl should just use last matching entry.

OK so the confusion is that it should use the last matching entry,
which it does, but then there's no file.

>> There's also no command to clean things up.
> You can just do rm /var/lib/systemd/coredump/* or something time
> based.
>> And my favorite:
>> Refusing to dump core to tty.
> OK, so that's a bug: coredumpctl prints that message before checking
> whether the coredump is accessible:
> I filed https://github.com/systemd/systemd/issues/4161.

OK thanks.

Chris Murphy
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