[Bug 230160] linuxulator doesn't implement madvise(MADV_DONTNEED) and any MADV_ flags with values >= 8 correctly

[Alexander Leidinger]

Quoting Edward Tomasz Napierała <trasz at freebsd.org> (from Tue, 30 Jun  
2020 12:45:12 +0100):

>> On 30 Jun 2020, at 09:29, Alexander Leidinger  
>> <Alexander at leidinger.net> wrote:
>>
>> Quoting bugzilla-noreply at freebsd.org (from Thu, 25 Jun 2020  
>> 20:31:29 +0000):
>>
>>> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230160
>>>
>>> --- Comment #12 from commit-hook at freebsd.org ---
>>> A commit references this bug:
>>>
>>> Author: markj
>>> Date: Thu Jun 25 20:30:31 UTC 2020
>>> New revision: 362631
>>> URL: https://svnweb.freebsd.org/changeset/base/362631
>>>
>>> Log:
>>>  Implement an approximation of Linux MADV_DONTNEED semantics.
>>
>> Hi,
>>
>> I've updated from r360373 to r362771. When I now try to start some  
>> Steam games I get a new error message:
>> linux: pid 80394 (ThreadPoolSingl): possibly incorrect MADV_DONTNEED
>>
>> There are several different processes with this message. What needs  
>> to be done to determine the "possibily incorrect" part?
>
> FWIW, I’m seeing those messages when running Python regression tests  
> (python3.6 -m test -vW -x test_socket), although it doesn’t seem to  
> break anything.

There are two possibilities:
  1) There is no issue, and the message is not needed and it should be removed.
  2) There may be an issue, and it needs to be fixed. In this case it  
would be interesting to know what the issue is, and maybe also to know  
how to detect if a particular program runs into the issue.

Bye,
Alexander.

-- 
http://www.Leidinger.net Alexander at Leidinger.net: PGP 0x8F31830F9F2772BF
http://www.FreeBSD.org    netchild at FreeBSD.org  : PGP 0x8F31830F9F2772BF
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