maliit-server crashes during power tests

[Selene ToyKeeper]

Maliit-server crashes fairly often while running power usage tests. I hope someone will be able to determine the root cause based on crash dumps and other logs.

Here are some of the 128 instances I've seen so far... inside each are numbered directories for each test run, and the crash dumps are inside of those under var-crash/ .

Arale rc-proposed 60, runs 3, 4, 5, and 7:
http://people.canonical.com/~platform-qa/power-results/2015-07-16_13:26:50-arale-60-power_usage_idle/

Arale devel-proposed 61, runs 2 and 3:
http://people.canonical.com/~platform-qa/power-results/2015-07-16_21:58:20-arale-61-power_usage_idle/

Krillin rc-proposed 62, run 4:
http://people.canonical.com/~platform-qa/power-results/2015-07-13_03:46:40-krillin-62-power_usage_display_on/

Krillin rc-proposed 62, runs 4 and 5:
http://people.canonical.com/~platform-qa/power-results/2015-07-13_02:02:39-krillin-62-power_usage_idle/

These are merely samples from recent test runs. I have plenty more if you need them, or can add additional logging to get more data from future tests.

[Michael Sheldon (michael-sheldon)]

Hi Selene,

 Looking at the core dumps it looks like it's the qtubuntu platform integration layer generating an error, typically this happens because unity8 isn't accepting Mir connections. Is unity8 running or has it also crashed during these tests?

Thanks,
 Mike.

[Selene ToyKeeper (toykeeper)]

Sometimes unity8 also crashes, but usually not. If you look at the links above you can see what other crash dumps there were for each test run. Also, bug 1475526 may be of interest since it now looks like it might be the same root cause.