[mapserver-users] PHP MapScript request handling gives seg fault error in libgdal

[Rob Marjot]

Dear list,

See my previous email; I didn't  mention that the map is rendered from ECW.
Maybe that's causing the trouble?

I made some progress in finding a workaround. I configured child processes
in the fpm pool to handle only 1 request:
pm.max_requests = 1
Basically this turns off any recycling.

Any further suggestions what to look into?

Thanks,
Rob

Op za 10 okt. 2020 om 02:44 schreef Rob Marjot <rob.marjot at gmail.com>:

> Hi All,
>
> I am running latest MapServer 7.6.1 compiled from source on Ubuntu 20.04
> with (also from source):
> - proj-7.1.0
> - gdal-3.1.2
>
> Using the ppa:ondrej/php repo, I installed the following PHP packages:
> php7.4 php7.4-fpm php7.4-dev
> Apache/2.4.41 proxies into the FPM over unix socket
>
> Compiling MapServer went smoothly and through the configuration of the
> extension in PHP, MapScript is available. When I call (HTTP GET) my PHP
> script to handle a WMS-formatted request [ OWSDispatch() ], the first 2
> requests are handled fine (returns a rendered map image), but the next two
> make the PHP-FPM crash:
> /var/log/syslog:
> Oct 10 01:59:25 as02 kernel: [3663532.034251] php-fpm7.4[1260175]: segfault
> at 28 ip 00007fbce21fb3eb sp 00007ffe87f600e0 error 6 in libgdal.so.27.0.2
> [7fbce152e000+d50000]
> Oct 10 01:59:25 as02 kernel: [3663532.034262] Code: 8b 15 81 de 56 00 e9
> 24 2d 38 ff 0f 1f 40 00 f3 0f 1e fa 41 54 49 89 f4 55 48 89 d5 53 89 fb 48
> 89 cf e8 e8 f0 ff ff 48 63 fb <4c> 89 24 f8 48 89 ac f8 00 01 00 00 5b 5d
> 41 5c c3 0f 1f 40 00 f3
>
> What could be the problem? Any help is much appreciated.
>
> Best,
> Rob Marjot
>
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