XYZ Tile export crashes with memory error

[russellcurtis]

What is the bug or the crash?

When exporting an XYZ Tile image set QGIS constantly crashes, with the Ubuntu error log reporting the following:
12:37:54 kernel: Out of memory: Killed process 27045 (qgis.bin) total-vm:37319648kB, anon-rss:30798676kB, file-rss:384kB, shmem-rss:464kB, UID:1000 pgtables:63520kB oom_score_adj:0

and

11:57:05 systemd: app-gnome-org.qgis.qgis-25584.scope: Consumed 37min 42.556s CPU time.
11:57:04 qgis.bin: gdb returned 256
11:57:04 gdb: No stack.
11:57:04 qgis.bin: QGIS died on signal 11
11:57:04 qgis.bin: QGIS died on signal 11
11:57:04 qgis.bin: Warning: QSocketNotifier: Socket notifiers cannot be enabled or disabled from another thread

Steps to reproduce the issue

Here is the Python script which is generating the error for me. I am unable to establish whether this is related to a specific file, or whether it's to do with the number of tiles generated etc. The crash consistently occurs regardless of the extent of the area I select for export.

processing.run("native:tilesxyzdirectory", {'EXTENT':'560383.723300000,566138.697900000,187318.562600000,192790.148300000 [EPSG:27700]','ZOOM_MIN':18,'ZOOM_MAX':18,'DPI':96,'BACKGROUND_COLOR':QColor(0, 0, 0, 0),'ANTIALIAS':True,'TILE_FORMAT':0,'QUALITY':75,'METATILESIZE':4,'TILE_WIDTH':256,'TILE_HEIGHT':256,'TMS_CONVENTION':False,'HTML_TITLE':'','HTML_ATTRIBUTION':'','HTML_OSM':False,'OUTPUT_DIRECTORY':'_<</myDirectory>>_','OUTPUT_HTML':'TEMPORARY_OUTPUT'})

Versions

3.40.3-Bratislava

Supported QGIS version

• I'm running a supported QGIS version according to the roadmap.

New profile

• I tried with a new QGIS profile

Additional context

No response

[rouault]

@russellcurtis Please provide a fully reproducible procedure, preferably with a project file you could share and the options you use to export to XYZ