1651047 - Fenix crashes during first content url load when profiler is active on Android 10

Status: NEW

(Core :: Gecko Profiler, defect, P2)

Description

[Nazım Can Altınova [:canova][:canaltinova on phabricator]]

Attachment: android-crash.png

This is something I encountered only on emulator, I couldn't reproduce this on my android reference device. But that is probably because this is something that happens on the later Android versions (emulator runs on Android 10 and my device is running on Android 7 (oh well)).
STR:

1. Load the Fenix app on your emulator.
2. Start the remote profiling via about:debugging.
3. Load a url (but make sure you didn't load anything before).

If it's the first time you are loading a web page, Fenix crashes without giving any proper log message on the Logcat. But it gives this error toast notification on the emulator itself:
"Background activity starts from org.mozilla.fenix.debug blocked. See g.co/dev/bgblock"
The link says (also see the attachment):

Android 10 (API level 29) and higher place restrictions on when apps can start activities when the app is running in the background. These restrictions help minimize interruptions for the user and keep the user more in control of what's shown on their screen.

The problem is Fenix was not on the background at that time. We need to investigate that issue.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:gerald, could you have a look please?

For more information, please visit auto_nag documentation.

Comment 2

[Julien Wajsberg [:julienw]]

I don't seem to have the problem with the "normal" fenix nightly on my Android 10 personal phone. But maybe I didn't test it properly, it's not a clean profile either, some tabs were remembered but not open yet.

Comment 3

[Gerald Squelart (he/him) (not at Mozilla since 2022-09-15)]

(Tentative priority&severity, please update as needed.)