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Bug #75107 opcache_reset will cause running FPM process stop with SIGKILL
Submitted: 2017-08-23 06:58 UTC Modified: 2018-01-01 21:02 UTC
Votes:6
Avg. Score:4.3 ± 0.9
Reproduced:5 of 5 (100.0%)
Same Version:1 (20.0%)
Same OS:2 (40.0%)
From: greatdeer at gmail dot com Assigned:
Status: Open Package: opcache
PHP Version: 5.6.31 OS: CentOS6.5
Private report: No CVE-ID: None
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From: greatdeer at gmail dot com
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 [2017-08-23 06:58 UTC] greatdeer at gmail dot com 
Description:
------------
I use Nginx and PHP-FPM, Occasionally, php-fpm.log will report SIGKILL ("WARNING: [pool www] child 12197 exited on signal 9 (SIGKILL) after 2046.724398 seconds from start") with no more messages. I look for the reason for a long time, and finally I found it. It was opcache_reset. When I update the php codes, opcache_reset() will be triggered to make the codes validate immediately. And sometimes some scripts were executing just the same time and would crash.
Is it a bug? or I should avoid useing opcache_reset()?

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 [2018-01-01 21:02 UTC] nikic@php.net 
opcache_reset() triggers an opcache restart. If a process holds onto an SHM lock for more than opcache.force_restart_timeout seconds after the restart is initiated, it will be killed. See also http://php.net/manual/en/opcache.configuration.php#ini.opcache.force-restart-timeout.
 
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