Re: 4.11.0-rc8+/x86_64 desktop lockup until applications closed

From	Arthur Marsh <arthur.marsh@internode.on.net>
Newsgroups	linux.kernel
Subject	Re: 4.11.0-rc8+/x86_64 desktop lockup until applications closed
Date	2017-05-03 03:50 +0200
Message-ID	<tCRAt-68i-1@gated-at.bofh.it> (permalink)
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Michal Hocko wrote on 02/05/17 17:01:

>> [92311.944443] swap_info_get: Bad swap offset entry 000ffffd
>> [92311.944449] swap_info_get: Bad swap offset entry 000ffffe
>> [92311.944451] swap_info_get: Bad swap offset entry 000fffff
>
> Pte swap entry seem to be clobbered. That suggests a deeper problem and
> a memory corruption.

Thanks again for the feedback. I've gone with 4.11.0+ git head kernels 
and last night rather than a lock-up I saw:

[40050.937161] mmap: chromium (6060): VmData 2148573184 exceed data 
ulimit 2147483647. Update limits or use boot option ignore_rlimit_data.
[40051.183213] traps: chromium[6060] trap int3 ip:5642ccce7996 
sp:7ffe0a563ac0 error:0

and the desktop session remained responsive.

The 2 GiB ulimit is preferable for me than having to rely on the OOM 
killer, but I can run tests with ignore_rlimit_data later on to check 
that the OOM killer still works rather than hitting some unforeseen 
error on swap exhaustion.

Arthur.

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4.11.0-rc8+/x86_64 desktop lockup until applications closed Arthur Marsh <arthur.marsh@internode.on.net> - 2017-04-27 11:20 +0200
  Re: 4.11.0-rc8+/x86_64 desktop lockup until applications closed Michal Hocko <mhocko@kernel.org> - 2017-04-27 11:30 +0200
    Re: 4.11.0-rc8+/x86_64 desktop lockup until applications closed Arthur Marsh <arthur.marsh@internode.on.net> - 2017-04-30 08:10 +0200
      Re: 4.11.0-rc8+/x86_64 desktop lockup until applications closed Michal Hocko <mhocko@kernel.org> - 2017-05-02 09:40 +0200
        Re: 4.11.0-rc8+/x86_64 desktop lockup until applications closed Arthur Marsh <arthur.marsh@internode.on.net> - 2017-05-03 03:50 +0200

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