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Re: System freezes after OOM

From Ondrej Kozina <okozina@redhat.com>
Newsgroups linux.kernel
Subject Re: System freezes after OOM
Date 2016-07-14 19:10 +0200
Message-ID <rUSj7-41y-7@gated-at.bofh.it> (permalink)
References (6 earlier) <rUqmS-2l8-15@gated-at.bofh.it> <rUtXr-4Ju-5@gated-at.bofh.it> <rUOpb-1nZ-11@gated-at.bofh.it> <rUQKm-2Yl-25@gated-at.bofh.it> <rUQU1-31t-15@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 07/14/2016 05:31 PM, Michal Hocko wrote:
> On Thu 14-07-16 16:08:28, Ondrej Kozina wrote:
> [...]
>> As Mikulas pointed out, this doesn't work. The system froze as well with the
>> patch above. Will try to tweak the patch with Mikulas's suggestion...
>
> Thank you for testing! Do you happen to have traces of the frozen
> processes? Does the flusher still gets throttled because the bias it
> gets is not sufficient. Or does it get throttled at a different place?
>

Sure. Here it is (including sysrq+t and sysrq+w output): 
https://okozina.fedorapeople.org/bugs/swap_on_dmcrypt/4.7.0-rc7+/1/4.7.0-rc7+.log

In a directory with the log there's also a patch the kernel was compiled 
with.

Ondra

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Thread

Re: System freezes after OOM Mikulas Patocka <mpatocka@redhat.com> - 2016-07-11 17:50 +0200
  Re: System freezes after OOM Michal Hocko <mhocko@kernel.org> - 2016-07-12 08:50 +0200
    Re: System freezes after OOM Mikulas Patocka <mpatocka@redhat.com> - 2016-07-13 01:50 +0200
      Re: System freezes after OOM Jerome Marchand <jmarchan@redhat.com> - 2016-07-13 10:40 +0200
        Re: System freezes after OOM Michal Hocko <mhocko@kernel.org> - 2016-07-13 13:20 +0200
          Re: System freezes after OOM Mikulas Patocka <mpatocka@redhat.com> - 2016-07-13 16:30 +0200
      Re: System freezes after OOM Michal Hocko <mhocko@kernel.org> - 2016-07-13 13:20 +0200
        Re: System freezes after OOM Michal Hocko <mhocko@kernel.org> - 2016-07-13 15:00 +0200
          Re: System freezes after OOM Milan Broz <gmazyland@gmail.com> - 2016-07-13 15:50 +0200
            Re: System freezes after OOM Mikulas Patocka <mpatocka@redhat.com> - 2016-07-13 17:40 +0200
              Re: System freezes after OOM Michal Hocko <mhocko@kernel.org> - 2016-07-14 11:10 +0200
                Re: System freezes after OOM Milan Broz <gmazyland@gmail.com> - 2016-07-14 11:50 +0200
        Re: System freezes after OOM Mikulas Patocka <mpatocka@redhat.com> - 2016-07-13 17:10 +0200
          Re: [dm-devel] System freezes after OOM Ondrej Kozina <okozina@redhat.com> - 2016-07-14 13:00 +0200
          Re: System freezes after OOM Michal Hocko <mhocko@kernel.org> - 2016-07-14 15:00 +0200
            Re: System freezes after OOM Mikulas Patocka <mpatocka@redhat.com> - 2016-07-14 16:10 +0200
              Re: System freezes after OOM Michal Hocko <mhocko@kernel.org> - 2016-07-14 17:00 +0200
                Re: System freezes after OOM Ondrej Kozina <okozina@redhat.com> - 2016-07-14 17:30 +0200
                Re: System freezes after OOM Mikulas Patocka <mpatocka@redhat.com> - 2016-07-14 19:40 +0200
                Re: System freezes after OOM Michal Hocko <mhocko@kernel.org> - 2016-07-15 10:40 +0200
                Re: System freezes after OOM Mikulas Patocka <mpatocka@redhat.com> - 2016-07-15 14:20 +0200
                Re: System freezes after OOM Michal Hocko <mhocko@kernel.org> - 2016-07-15 14:30 +0200
                Re: System freezes after OOM Mikulas Patocka <mpatocka@redhat.com> - 2016-07-15 19:10 +0200
                Re: System freezes after OOM Michal Hocko <mhocko@kernel.org> - 2016-07-18 09:30 +0200
            Re: System freezes after OOM Ondrej Kozina <okozina@redhat.com> - 2016-07-14 17:30 +0200
              Re: System freezes after OOM Michal Hocko <mhocko@kernel.org> - 2016-07-14 17:40 +0200
                Re: System freezes after OOM Ondrej Kozina <okozina@redhat.com> - 2016-07-14 19:10 +0200
                Re: System freezes after OOM Michal Hocko <mhocko@kernel.org> - 2016-07-14 19:40 +0200
                Re: System freezes after OOM Michal Hocko <mhocko@kernel.org> - 2016-07-14 19:40 +0200
                Re: System freezes after OOM Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> - 2016-07-15 13:50 +0200
      Re: System freezes after OOM Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> - 2016-07-13 15:30 +0200
        Re: System freezes after OOM Michal Hocko <mhocko@kernel.org> - 2016-07-13 15:50 +0200
          Re: System freezes after OOM Mikulas Patocka <mpatocka@redhat.com> - 2016-07-13 16:30 +0200
            Re: System freezes after OOM Michal Hocko <mhocko@kernel.org> - 2016-07-13 17:00 +0200
              Re: System freezes after OOM Mikulas Patocka <mpatocka@redhat.com> - 2016-07-13 17:20 +0200
                Re: System freezes after OOM David Rientjes <rientjes@google.com> - 2016-07-14 02:00 +0200
                Re: System freezes after OOM Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> - 2016-07-14 13:10 +0200
                Re: System freezes after OOM Mikulas Patocka <mpatocka@redhat.com> - 2016-07-14 14:30 +0200
                Re: System freezes after OOM David Rientjes <rientjes@google.com> - 2016-07-14 22:30 +0200
                Re: System freezes after OOM Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> - 2016-07-14 23:50 +0200
                Re: System freezes after OOM David Rientjes <rientjes@google.com> - 2016-07-15 00:10 +0200
                Re: System freezes after OOM Mikulas Patocka <mpatocka@redhat.com> - 2016-07-15 13:30 +0200
                Re: System freezes after OOM David Rientjes <rientjes@google.com> - 2016-07-15 23:30 +0200
                Re: System freezes after OOM Mikulas Patocka <mpatocka@redhat.com> - 2016-07-14 14:30 +0200
                Re: System freezes after OOM David Rientjes <rientjes@google.com> - 2016-07-14 22:30 +0200
                Re: System freezes after OOM Mikulas Patocka <mpatocka@redhat.com> - 2016-07-15 13:30 +0200
                Re: System freezes after OOM David Rientjes <rientjes@google.com> - 2016-07-15 23:30 +0200
                Re: System freezes after OOM Mikulas Patocka <mpatocka@redhat.com> - 2016-07-15 23:50 +0200
                Re: System freezes after OOM David Rientjes <rientjes@google.com> - 2016-07-16 00:00 +0200
                Re: System freezes after OOM Mikulas Patocka <mpatocka@redhat.com> - 2016-07-16 02:00 +0200
                Re: System freezes after OOM Johannes Weiner <hannes@cmpxchg.org> - 2016-07-18 17:20 +0200
                Re: System freezes after OOM Michal Hocko <mhocko@kernel.org> - 2016-07-14 17:30 +0200
                Re: System freezes after OOM David Rientjes <rientjes@google.com> - 2016-07-14 22:40 +0200
                Re: System freezes after OOM Michal Hocko <mhocko@kernel.org> - 2016-07-15 09:30 +0200
                Re: System freezes after OOM Michal Hocko <mhocko@kernel.org> - 2016-07-15 10:30 +0200
                Re: System freezes after OOM Mikulas Patocka <mpatocka@redhat.com> - 2016-07-15 14:10 +0200
                Re: System freezes after OOM David Rientjes <rientjes@google.com> - 2016-07-15 23:50 +0200
                Re: System freezes after OOM Michal Hocko <mhocko@kernel.org> - 2016-07-18 09:40 +0200
                Re: System freezes after OOM David Rientjes <rientjes@google.com> - 2016-07-18 23:10 +0200
        Re: System freezes after OOM David Rientjes <rientjes@google.com> - 2016-07-14 02:10 +0200

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