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Date: Sun, 29 Dec 2019 17:35:32 +0100
From: Adam Zabrocki <>
Subject: Re: LIST HASH IS DIFFERENT - nf_nat / nf_conntrack
 Linux version 5.3.0-0


On Fri, Dec 27, 2019 at 10:56:18AM +0000, Patrick Schleizer wrote:
> Adam Zabrocki:
> > Can you confirm that you are using LKRG from the bitbucket repo?
> No, I am not using git master
> (since I cannot verify the code being malware free / coming from you
> unless gpg verified). I am using which is
> at (gpg verified) git tag 0.7.

Yes, I'm aware about that request and I'll try to research what does it look 
like to make it happend.

> Could that make the difference? Was this fixed/modified meanwhile in git
> master?

Yes. I believe this is the exact commit fixing that issue:

> In future reports, I will try to remember to mention my exact version.

Most of the issues are usually fixed in the official repo which might affect 
specific LKRG release.

> > The easiest way to be able to test JUMP_LABEL is to enable / disable global 
> > kernel tracing, e.g.:
> > 
> > # echo 1 > /sys/kernel/debug/tracing/events/enable
> > # echo 0 > /sys/kernel/debug/tracing/events/enable
> root@...ian-buster-test:~# echo 1 > /sys/kernel/debug/tracing/events/enable
> root@...ian-buster-test:~# cat /sys/kernel/debug/tracing/events/enable
> X
> root@...ian-buster-test:~# echo 0 > /sys/kernel/debug/tracing/events/enable
> root@...ian-buster-test:~# cat /sys/kernel/debug/tracing/events/enable
> 0
> root@...ian-buster-test:~# echo 1 > /sys/kernel/debug/tracing/events/enable
> root@...ian-buster-test:~# cat /sys/kernel/debug/tracing/events/enable
> X
> Not sure this is what was expected from me. If not, please kindly clarify.

If you enable LKRG log_level >= 3 and run the following commands, you should be 
able to see in the kernel logs appropiate information generated by LKRG (LKRG's 
DB hash updates if everything works OK).


> Cheers,
> Patrick

pi3 (pi3ki31ny) - pi3 (at) itsec pl

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