1328115 - Crash in mozilla::jni::Context<T>::ClassRef

Status: RESOLVED FIXED

(Core Graveyard :: Widget: Android, defect)

Description

[Nicholas Nethercote [inactive]]

This bug was filed from the Socorro interface and is 
report bp-68a4f982-d7bb-4554-b5ec-12af42161231.
=============================================================

#1 topcrash in Nightly 20161230030205, though it's only 6 crashes across two installations.

The crash address is always 0xdeadd00d, which is interesting. It's also a startup crash.

jchen, any ideas?

Comment 1

[(inactive) Jim Chen [:jchen] [:darchons]]

Crashes are happening on API 15, because VsyncSource references several symbols that only exist on API 16+.

Comment 2

[(inactive) Jim Chen [:jchen] [:darchons]]

Attachment: 1. Test vsync support in native code (v1)

Don't go through the VsyncSource Java class to test support for vsync.
Because VsyncSource references symbols from API 16+, Dalvik fails to
load it for API 15 and below. Also make several other changes in
VsyncSource, including removing the unnecessary JNIObject superclass,
and refactoring the instance initialization code, which fixes a possible
race when initializing.

Comment 3

[(inactive) Jim Chen [:jchen] [:darchons]]

Attachment: 2. Update auto-generated bindings

Comment 4

[(inactive) Jim Chen [:jchen] [:darchons]]

Attachment: 3. Check for exceptions when finding Java class (v1)

Be more careful when we try to find Java classes, so that any exceptions
are not ignored and passed on to the caller, which is likely to result
in a hard-to-diagnose Dalvik/ART crash.

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/mozilla-inbound/rev/10968c7a6abf
1. Test vsync support in native code; r=snorp
https://hg.mozilla.org/integration/mozilla-inbound/rev/4ddd36462bdf
2. Update auto-generated bindings; r=me
https://hg.mozilla.org/integration/mozilla-inbound/rev/8f6416404aea
3. Check for exceptions when finding Java class; r=snorp

Comment 6

[Carsten Book [:Tomcat]]

https://hg.mozilla.org/mozilla-central/rev/10968c7a6abf
https://hg.mozilla.org/mozilla-central/rev/4ddd36462bdf
https://hg.mozilla.org/mozilla-central/rev/8f6416404aea