Re: fedora 25 coredump not being generated

[jayshankar nair]

Hi, The problem of core dump not being generated still persists. What should i 
do to generate a core file.
Thanks,Jayshankar
 

On Thursday, June 8, 2017 12:15 PM, jayshankar nair 
 wrote:
 

 Hi,
The core_pattern contents in /proc/sys/kernel is as below
|/usr/libexec/abrt-hook-ccpp %s %c %p %u %g %t %P %I.
How to reset the core pattern and generate core dump. I didn't get you. Please 
show examples.
Thanks,Jayshankar 

On Thursday, June 8, 2017 11:21 AM, Samuel Sieb  wrote:
 

 On 06/07/2017 10:03 PM, jayshankar nair wrote:
> In fedora 25 after segmentation fault, *core dump  file is not being 
> created*.

Check the logs, the core dump might be getting captured elsewhere. 
Normally abrt intercepts them.  There is a way to reset where the kernel 
sends them, look at /proc/sys/kernel/core_pattern.
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Re: Update to libdb-5.3.28-21.fc25 in F25 will break the rpm database. Repairable by rebuilding rpm database with rpm --rebuilddb

[Patrick O'Callaghan]

On Sat, 2017-06-10 at 10:07 -0700, Samuel Sieb wrote:
> On 06/10/2017 02:42 AM, Patrick O'Callaghan wrote:
> > On running 'dnf update' this morning I got a segfault from
> > /usr/lib/libdb-5.3.so, which is part of libdb-5.3.28-21.fc25, so the
> > problem is more than just an incompatible database.
> > 
> > However removing the temp files and rebuilding the db seems to have
> > cleared it.
> 
> Don't those two paragraphs contradict each other?  You rebuilt the 
> database and there's no more segfault.  The problem is that a certain 
> structure from glibc that is stored in the database has changed it's 
> format.  Clearing the temp files removes that structure so after that 
> there's no problem.

My point is that an incompatibility in a database should never cause a
segfault under any circumstances. If it happens it means the db library
is not adequately testing its input. This kind of thing is what leads
to security holes as well as broken software.

poc
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Re: Update to libdb-5.3.28-21.fc25 in F25 will break the rpm database. Repairable by rebuilding rpm database with rpm --rebuilddb

[Samuel Sieb]

On 06/10/2017 02:42 AM, Patrick O'Callaghan wrote:

On running 'dnf update' this morning I got a segfault from
/usr/lib/libdb-5.3.so, which is part of libdb-5.3.28-21.fc25, so the
problem is more than just an incompatible database.

However removing the temp files and rebuilding the db seems to have
cleared it.


Don't those two paragraphs contradict each other?  You rebuilt the 
database and there's no more segfault.  The problem is that a certain 
structure from glibc that is stored in the database has changed it's 
format.  Clearing the temp files removes that structure so after that 
there's no problem.

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Re: new package: KeepassXC password manager

[Tom Horsley]

On Sat, 10 Jun 2017 10:06:05 +0200
Germano Massullo wrote:

> KeePassXC is a community fork of KeePassX, a native cross-platform port
> of KeePass Password Safe, with the goal to extend and improve it

The feature I could really use is a preference for
setting the font size. On a UHD monitor you can barely
read the existing keepassx screen.
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Re: Update to libdb-5.3.28-21.fc25 in F25 will break the rpm database. Repairable by rebuilding rpm database with rpm --rebuilddb

[Patrick O'Callaghan]

On Sat, 2017-06-10 at 10:22 +0800, Ed Greshko wrote:
> On 06/10/17 09:12, stan wrote:
> > There is an update (or test update) of libdb for F25 that, when
> > installed, breaks the rpm database because it is incompatible.  The dnf
> > update completes, and then hangs (at least it did on my system).  The
> > fix is to remove the old rpm databases (this might be optional), and
> > rebuild the rpm databases.
> > 
> > rm /var/lib/rpm/__db.00?  # optional?
> > rpm --rebuilddb
> > 
> > I did a reboot to sync everything that uses libdb (anything that uses
> > the Berkeley db).  It might be possible just to restart affected
> > applications if that isn't an option.  That worked for my mail client
> > before I rebooted.
> 
> 
> FWIW, so far I've seen no ill effects from updating to
> libdb-5.3.28-21.fc25.  However, I should note that I had previously
> updated to libdb-5.3.28-16 from testing also with no ill effects.

On running 'dnf update' this morning I got a segfault from
/usr/lib/libdb-5.3.so, which is part of libdb-5.3.28-21.fc25, so the
problem is more than just an incompatible database.

However removing the temp files and rebuilding the db seems to have
cleared it.

poc
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Re: postgresql and firewald startup

[Jeandet Alexis]

Hi Gordon, 

Thanks that fixed the issue, indeed I configured it to listen on a
specific IP. 
I didn't know the exact difference between network and network-online
targets.
 
Best regards,
Alexis.
Le vendredi 09 juin 2017 à 17:31 -0700, Gordon Messmer a écrit :
> On 06/09/2017 12:09 AM, Jeandet Alexis wrote:
> > On startup postgreslq always fail to start complaining about port
> > 5432.
> 
> 
> My first guess would be that you've configured postgresql to listen
> on a 
> specific IP address, and when you do that, the service needs to
> depend 
> on "network-online.target" instead of "network.target."
> 
> Run "systemctl edit postgresql.service" and insert two lines:
> 
> [Unit]
> After=network-online.target
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new package: KeepassXC password manager

[Germano Massullo]

Hello, I am glad to announce that KeepassXC just arrived into Fedora
repositories.
KeePassXC is a community fork of KeePassX, a native cross-platform port
of KeePass Password Safe, with the goal to extend and improve it with
new features and bugfixes to provide a feature-rich, fully
cross-platform and modern open-source password manager.
https://apps.fedoraproject.org/packages/keepassxc

A new important feature that will be introduced probably in future 2.3.0
release, is the PKCS#11 support, in order to let users access to the
database using security devices like smartcards and usb sticks like
Nitrokey Pro
https://github.com/keepassxreboot/keepassxc/issues/255

Concerning the frequent question "why KeepassXC instead of Keepass*",
please read https://keepassxc.org/docs

Best regards
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AMD Ryzen 7 freeze on YouTube

[Lukas Zapletal]

Hey,

I encountered weird Ryzen 7 freeze when playing youtube video, it kinda stuck 
in a few seconds loop, the computer was unusable and had to hard reset. While I 
will be trying to pull out something useful from logs next time (I don't have 
persistent journal set), anyone experienced the same? This is up-to-date Fedora 
25, I was using Google Chrome stable.

Is this something to do with Ryzen bug FMA3? How do I check? I do have latest 
BIOS update, but unsure how to check this bug. Is there a test? I also have 
older GeForce card, using open source drivers.

Thanks for any hints which direction I should dig. Thanks.
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