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Re: [dm-devel] [4.7.0rc6] Page Allocation Failures with dm-crypt

From Matthias Dahl <ml_linux-kernel@binary-island.eu>
Newsgroups linux.kernel
Subject Re: [dm-devel] [4.7.0rc6] Page Allocation Failures with dm-crypt
Date 2016-07-11 15:30 +0200
Message-ID <rTJrz-7yP-1@gated-at.bofh.it> (permalink)
References <rT0NP-3Iq-9@gated-at.bofh.it> <rTEUW-4zH-27@gated-at.bofh.it> <rTJhT-7vn-1@gated-at.bofh.it>
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Hello Mike...

On 2016-07-11 15:18, Mike Snitzer wrote:

> Something must explain the execessive nature of your leak but
> it isn't a known issue.

Since I am currently setting up the new machine, all tests were
performed w/ various live cd images (Fedora Rawhide, Gentoo, ...)
and I saw the exact same behavior everywhere.

> Have you tried running with kmemleak enabled?

I would have to check if that is enabled on the live images but even if
it is, how would that work? The default interval is 10min. If I fire up
a dd, the memory is full within two seconds or so... and after that, the
OOM killer kicks in and all hell breaks loose unfortunately.

I don't think this is a particular unique issue on my side. You could,
if I am right, easily try a Fedora Rawhide image and reproduce it there
yourself. The only unique point here is my RAID10 which is a Intel Rapid
Storage s/w RAID. I have no clue if this could indeed cause such a "bug"
and how.

Thanks,
Matthias

-- 
Dipl.-Inf. (FH) Matthias Dahl | Software Engineer | binary-island.eu
  services: custom software [desktop, mobile, web], server administration

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Thread

Re: [4.7.0rc6] Page Allocation Failures with dm-crypt Matthias Dahl <ml_linux-kernel@binary-island.eu> - 2016-07-11 10:40 +0200
  Re: [4.7.0rc6] Page Allocation Failures with dm-crypt Mike Snitzer <snitzer@redhat.com> - 2016-07-11 15:20 +0200
    Re: [dm-devel] [4.7.0rc6] Page Allocation Failures with dm-crypt Matthias Dahl <ml_linux-kernel@binary-island.eu> - 2016-07-11 15:30 +0200
      Re: [4.7.0rc6] Page Allocation Failures with dm-crypt Mike Snitzer <snitzer@redhat.com> - 2016-07-11 15:50 +0200
    Re: [4.7.0rc6] Page Allocation Failures with dm-crypt Mike Snitzer <snitzer@redhat.com> - 2016-07-11 15:40 +0200
      Re: [dm-devel] [4.7.0rc6] Page Allocation Failures with dm-crypt Matthias Dahl <ml_linux-kernel@binary-island.eu> - 2016-07-11 16:50 +0200
        Re: [dm-devel] [4.7.0rc6] Page Allocation Failures with dm-crypt Matthias Dahl <ml_linux-kernel@binary-island.eu> - 2016-07-12 10:10 +0200

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