I was pointed out to the following broken thumbnail: https://upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Zevenhuizen_Moerkapelle_wapen.svg/375px-Zevenhuizen_Moerkapelle_wapen.svg.png
The commons image page is: https://commons.wikimedia.org/wiki/File:Zevenhuizen_Moerkapelle_wapen.svg
As you can see (hopefully) is that the thumbnail is not completely generated, only the bottom part. Not sure if this is a one off, or a more general problem.
| Status | Subtype | Assigned | Task | ||
|---|---|---|---|---|---|
| Stalled | None | T214738 Several PNG thumbnail sizes of a specific SVG image do not display correctly | |||
| Stalled | None | T193352 Update librsvg to ≥2.42.3 (2.44.10) | |||
| Resolved | None | T68672 SVG style element ignored if no type attribute is specified | |||
| Open | None | T216815 Upgrade Thumbor to Buster | |||
| Open | None | T212941 Investigate systemd hardening to replace Firejail for Thumbor | |||
| Resolved | fgiunchedi | T212946 Stream Thumbor logs to logstash | |||
| Resolved | Gilles | T187765 Replace the Nginx fronting Thumbor with Haproxy | |||
| Resolved | fgiunchedi | T204266 Backport prometheus haproxy exporter for Jessie | |||
| Resolved | jijiki | T220499 Export useful metrics from haproxy logs for Thumbor | |||
| Resolved | None | T216892 Santali font shown as square boxes in thumbnail version of a specific SVG file | |||
| Resolved | jijiki | T221562 Build Thumbor packages for buster |
Cannot reproduce locally with rsvg-convert -h 375 -f png -o Zevenhuizen_Moerkapelle_wapen.png Zevenhuizen_Moerkapelle_wapen.svg but I'm already on librsvg2-2.44.13-1.fc29.x86_64 (plus I guess we don't use rsvg-convert for this job).
We do use rsvg-convert, Stretch is on libsrvg 2.40.16-1. This is very likely to be something that would be fixed by a librsvg upgrade.
Looks like librsvg may have regressed on this issue since 2.44.13, as conversion fails for all thumbnails where the width is between 310 and 395 inclusive using 2.48.4.
$ RUST_BACKTRACE=full rsvg-convert -w 395 -f png -u -o Zevenhuizen_Moerkapelle_wapen.svg.png Zevenhuizen_Moerkapelle_wapen.svg thread '<unnamed>' panicked at 'Cairo error "out of memory"', /build/.cargo/registry/src/github.com-1ecc6299db9ec823/cairo-rs-0.8.1/src/enums.rs:274:13 stack backtrace: 0: 0x7ff4c0d104df - <unknown> 1: 0x7ff4c0b74eec - <unknown> 2: 0x7ff4c0d0f9c6 - <unknown> 3: 0x7ff4c0d0f610 - <unknown> 4: 0x7ff4c0d0edd6 - <unknown> 5: 0x7ff4c0d0e978 - <unknown> 6: 0x7ff4c0d0e920 - <unknown> 7: 0x7ff4c0ca53ce - <unknown> 8: 0x7ff4c0ca4758 - <unknown> 9: 0x7ff4c0c84895 - <unknown> 10: 0x7ff4c0c84653 - <unknown> 11: 0x7ff4c0c82e79 - <unknown> 12: 0x7ff4c0c83d66 - <unknown> 13: 0x7ff4c0cbcdd4 - <unknown> 14: 0x7ff4c0c7f629 - <unknown> 15: 0x7ff4c0cbcc3d - <unknown> 16: 0x7ff4c0c84895 - <unknown> 17: 0x7ff4c0c84653 - <unknown> 18: 0x7ff4c0c82e79 - <unknown> 19: 0x7ff4c0c83d66 - <unknown> 20: 0x7ff4c0ca1f6b - <unknown> 21: 0x7ff4c0c7f629 - <unknown> 22: 0x7ff4c0ca15cf - <unknown> 23: 0x7ff4c0c84895 - <unknown> 24: 0x7ff4c0c84653 - <unknown> 25: 0x7ff4c0c82e79 - <unknown> 26: 0x7ff4c0d081cf - <unknown> 27: 0x7ff4c0d07e8c - <unknown> 28: 0x7ff4c0b58209 - rsvg_rust_handle_render_cairo_sub 29: 0x55eaf1b7c9af - <unknown> 30: 0x7ff4c0349002 - __libc_start_main 31: 0x55eaf1b7d7de - <unknown> 32: 0x0 - <unknown> fatal runtime error: failed to initiate panic, error 5 fish: “RUST_BACKTRACE=full rsvg-conver…” terminated by signal SIGABRT (Abort)
If it works on 2.44.10-2.1 (the current Debian buster version) we should be fine for a while though.
I reported it upstream: https://gitlab.gnome.org/GNOME/librsvg/-/issues/720 (with rsvg-convert version 2.48.9)