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Mail Archives: cygwin/2021/09/06/13:14:14

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Subject: Re: mmap failure [was: cygrunsrv + sshd + rsync = 20 times too slow
-- throttled?]
To: cygwin AT cygwin DOT com
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Date: Mon, 6 Sep 2021 13:12:58 -0400
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From: Ken Brown via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Ken Brown <kbrown AT cornell DOT edu>
Errors-To: cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com
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On 9/6/2021 11:32 AM, Corinna Vinschen via Cygwin wrote:
> On Sep  5 09:24, Ken Brown via Cygwin wrote:
>> On 9/4/2021 8:04 PM, Ken Brown via Cygwin wrote:
>>> On 9/4/2021 6:58 PM, Ken Brown via Cygwin wrote:
>>>> Here are the correct commits:
>>>>
>>>> 8169e39ab Cygwin: C++17: register keyword is deprecated
>>>> 3ca80b360 Cygwin: dumper: fix up GCC pragma for g++ 11.2
>>>> bdb7991db Cygwin: workaround a g++ 11.2 initialization bug
>>>> 801120c1f Cygwin: loader script: add DWARF 5 sections
>>>> d5cc66426 Cygwin: testsuite: avoid "conflicting types" gcc warning
>>>> c2fe205b5 strstr: avoid warnings
>>>> 76c2c7a89 ldexp/ldexpf: avoid assembler warning
>>>> eeeb5650c Cygwin: fix declaration of RtlInitEmptyUnicodeString
>>>>
>>>>>
>>>>>> So there appears to be something wrong with cygwin1.dll
>>>>>> built with the current build tools (gcc 11.2.0, binutils
>>>>>> 2.37, not sure what else is relevant).
>>>
>>> Wait a minute...I'll bet this is related to the MEM_EXTENDED_PARAMETER
>>> initialization problem that was dealt with in commit bdb7991db.
>>
>> More data: When I run the test case under gdb, it succeeds.  When I run it
>> under strace, I see VirtualAlloc2 in fhandler_dev_zero::mmap failing with
>> windows error 87.
> 
> Are the const's I added to the MEM_EXTENDED_PARAMETER data invalid,
> perhaps?

I tried removing them, and I got the same error.  I also tried removing static, 
and I tried removing both static and const.

Ken

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