[Here Maps] Occasional crasher on startup

[David Barth]

While testing a new release, I experienced several crashes on application start.

Tested on krilling, rc-proposed image 290.

Application log: https://pastebin.canonical.com/152629/

[Alexandre Abreu (abreu-alexandre)]

I tested on BQ r290 with Oxide 1.13.8 and I managed to get some "crashes", after starting and stopping quite a few times Here Maps. The crash file is almost useless.

I tried to remove the override file to see if it was responsible for this and the "crashes" are still there (but not easy to reproduce).

I tried to downgrade to Oxide 1.13.6 and was able to get those "crashes" again.

In all cases on BQ, I have quite a few apparmor denials:

https://pastebin.canonical.com/152651/

I tried on Arale (rc-proposed) with Oxide 1.13.8 and I get crashes (they might not be the same) using the same repro steps (fuzzy) with the following stack trace which points to a crash in MIR

https://pastebin.canonical.com/152641/

[Alexandre Abreu (abreu-alexandre)]

The logs show that on BQ I get the same error as the original crash app log:

libust[15694/15698]: Error: Error opening shm /lttng-ust-wait-5-32011 (in get_wait_shm() at lttng-ust-comm.c:958)
libust[15694/15698]: Error: Error opening shm /lttng-ust-wait-5-32011 (in get_wait_shm() at lttng-ust-comm.c:958)
Loading module: 'libubuntu_application_api_touch_mirclient.so.3.0.0'
webapp-container: unrecognized option '--webappUrlPatterns=https?://here.com/*,https?://*.here.com/*'
webapp-container: unrecognized option '--user-agent-string=Mozilla/5.0 (Linux; Ubuntu 14.04) AppleWebKit/537.36 Chromium/35.0.1870.2 Mobile Safari'
qml: Loading webview on /home/phablet/.local/share/com.nokia.heremaps
QQmlExpression: Expression file:///usr/share/webbrowser-app/webcontainer/WebApp.qml:263:25 depends on non-NOTIFYable properties:
    unity::action::qml::ActionManager::globalContext
shm_open() failed: Permission denied
qml: Loaded 5 UA override(s) from file:///usr/lib/arm-linux-gnueabihf/qt5/qml/Ubuntu/Web/ua-overrides-mobile.js
libust[15694/15750]: Error: Error opening shm /lttng-ust-wait-5 (in get_wait_shm() at lttng-ust-comm.c:958)
libust[15694/15750]: Error: Error opening shm /lttng-ust-wait-5 (in get_wait_shm() at lttng-ust-comm.c:958)
libust[15694/15751]: Error: Error opening shm /lttng-ust-wait-5-32011 (in get_wait_shm() at lttng-ust-comm.c:958)
libust[15694/15751]: Error: Error opening shm /lttng-ust-wait-5-32011 (in get_wait_shm() at lttng-ust-comm.c:958)
qml: Start browsing
ubuntumirclient: Got invalid serialized mime data. Ignoring it.
[0323/183734:ERROR:layer_tree_host_impl.cc(2263)] Forcing zero-copy tile initialization as worker context is missing
*** Error in `webapp-container': malloc(): smallbin double linked list corrupted: 0xb88b7300 ***

I never got those in Arale

[Alexandre Abreu (abreu-alexandre)]

It looks very similar to what was reported there:

https://bugs.launchpad.net/canonical-devices-system-image/+bug/1559428