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Bug #80050 msg_receive is awakened by error code 43
Submitted: 2020-09-03 16:04 UTC Modified: -
From: milan dot matejcek at gmail dot com Assigned:
Status: Open Package: Semaphore related
PHP Version: Irrelevant OS: raspbian / ubuntu
Private report: No CVE-ID: None
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 [2020-09-03 16:04 UTC] milan dot matejcek at gmail dot com
sysvmsg extension

I tested on arm raspbian buster 10, 32 bit (php 7.3.19) and ubuntu 20.04, 64 bit (php 7.4.9), both are same.

I have long running process, which is executed by supervisor, where is passive waiting for message from queue, but this waiting is sometimes awakened by error code 43.

I checked that the supervisor runs only one php process and the PID is still the same.

Is there anything what clean resources or queues?

If i have two processes and different queue key, than both return error 43 in same time.

Test script:
I create repository on Github:

Expected result:
Passive waiting without awakened


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