Re: BUG #14419: DB connections fails with "could not reserve shared memory region" in postgresql log.

From: Julien Rouhaud <julien(dot)rouhaud(at)dalibo(dot)com>
To: Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, jari(dot)kopponen(at)patria(dot)fi
Cc: PostgreSQL mailing lists <pgsql-bugs(at)postgresql(dot)org>
Subject: Re: BUG #14419: DB connections fails with "could not reserve shared memory region" in postgresql log.
Date: 2016-11-11 14:22:53
Message-ID: 13f1773c-5e0d-72c6-a298-c483c458e051@dalibo.com
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On 11/11/2016 14:47, Michael Paquier wrote:
> On Fri, Nov 11, 2016 at 9:12 PM, <jari(dot)kopponen(at)patria(dot)fi> wrote:
>> The following bug has been logged on the website:
>>
>> Bug reference: 14419
>> Logged by: jari kopponen
>> Email address: jari(dot)kopponen(at)patria(dot)fi
>> PostgreSQL version: 9.4.4
>> Operating system: Windows 7 Professional, 64 bit SP 1
>> Description:
>>
>> After we installed kb3177467 (Servicing stack update for Windows 7 SP1 and
>> Windows Server 2008 R2 SP1: September 20, 2016) windows update, we faced
>> problems with database connections. In postgresql there is log entries
>> "could not reserve shared memory region (addr:xxx) for child(yyy): error
>> code 487. This seems to be quite similar problem than described in : BUG
>> #14050.
>
> From where are those builds? Is ASLR enabled? I saw patterns of broken
> shared memory with Win 2k8 R2 because of that.
>

FWIW, there was 3 reports for this issue on french board in the last few
days (including pg 9.3.3 and 9.5.5), I think all of them on W7.

--
Julien Rouhaud
http://dalibo.com - http://dalibo.org

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