1688017 - Crash in [@ libGLES_mali.so@0xa69218] on Mali-G76 devices

Status: RESOLVED FIXED

(Core :: Graphics, defect)

Description

[Kevin Brosnan [Ex-Mozilla]]

Crash report: https://crash-stats.mozilla.org/report/index/d251ca12-e840-4ae3-b18b-ef49e0210121

Reason: SIGSEGV /SEGV_MAPERR

Top 10 frames of crashing thread:

0 libGLES_mali.so libGLES_mali.so@0xa69218 
1 libGLES_mali.so libGLES_mali.so@0x7d4a04 
2 libGLES_mali.so libGLES_mali.so@0x7d4a04 
3 libGLES_mali.so libGLES_mali.so@0x7d346c 
4 libGLES_mali.so libGLES_mali.so@0x7d2d60 
5 libGLES_mali.so libGLES_mali.so@0x7d29c4 
6 libGLES_mali.so libGLES_mali.so@0x8201ec 
7 libGLES_mali.so libGLES_mali.so@0x7bd8e0 
8 libGLES_mali.so libGLES_mali.so@0x7b0034 
9 libGLES_mali.so libGLES_mali.so@0x7f57dc 

Mali-G76 based devices are crashing at this address.

Comment 1

[Jamie Nicol [:jnicol] out of office until 6th Jan]

We have 2 reports on github of reproducible crashes when playing video on twitter on Mali-G76 devices: https://github.com/mozilla-mobile/fenix/issues/17612. That could potentially be the cause of these crashes.

I can't reproduce on a Mali-G77 or a G72 (I don't have a G76 unfortunately).

Jim: this might be worth disabling webrender on Mali-G76 until I get my hands on a device and find a fix

Comment 2

[Jamie Nicol [:jnicol] out of office until 6th Jan]

Attachment: Bug 1688017 - Disable webrender on Mali-G76 devices. r?nical

We're seeing reports of crashes when users attempt to watch video on
Mali-G76 devices. Disable webrender for now on Mali-G76 until the
underlying problem is identified and fixed.

Comment 3

[Jamie Nicol [:jnicol] out of office until 6th Jan]

Comment on attachment 9198969 [details]
Bug 1688017 - Disable webrender on Mali-G76 devices. r?nical

Beta/Release Uplift Approval Request

• User impact if declined: Crashes for users with Mali-G76 GPUs when attempting to watch videos on twitter and other sites
• Is this code covered by automated tests?: No
• Has the fix been verified in Nightly?: No
• Needs manual test from QE?: No
• If yes, steps to reproduce:
• List of other uplifts needed: None
• Risk to taking this patch: Low
• Why is the change risky/not risky? (and alternatives if risky): Disables webrender for affected devices. It has only been enabled on these devices for 1 release cycle, and non-webrender is still in widespread use on other devices, so we can be confident it still works correctly. Reporter confirmed that manually disabling webrender fixes the crash.
• String changes made/needed: N/A

Comment 4

[Jim Mathies [:jimm]]

(In reply to Jamie Nicol [:jnicol] from comment #1)

We have 2 reports on github of reproducible crashes when playing video on twitter on Mali-G76 devices: https://github.com/mozilla-mobile/fenix/issues/17612. That could potentially be the cause of these crashes.

I can't reproduce on a Mali-G77 or a G72 (I don't have a G76 unfortunately).

Jim: this might be worth disabling webrender on Mali-G76 until I get my hands on a device and find a fix

sounds good.

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/657784d46b05
Disable webrender on Mali-G76 devices. r=nical,geckoview-reviewers,agi

Comment 6

[Julien Cristau [:jcristau]]

Comment on attachment 9198969 [details]
Bug 1688017 - Disable webrender on Mali-G76 devices. r?nical

approved for 86.0b1 and 85.0.1

Comment 7

[Julien Cristau [:jcristau]]

https://hg.mozilla.org/releases/mozilla-beta/rev/a5cbffb778b8

Comment 8

[Sandor Molnar[:smolnar]]

https://hg.mozilla.org/mozilla-central/rev/657784d46b05

Comment 9

[Julien Cristau [:jcristau]]

https://hg.mozilla.org/releases/mozilla-release/rev/2f27a81fcd17

Comment 10

[Sorina Florean [:sflorean]]

Tested on RC 85.1.1 with the following devices and we didn't encounter any issues: Google Pixel (Android 11), Samsung Galaxy Note 10 (Android 10), Sony Xperia Z5 Premium (Android 7.1.1), and Huawei MediaPad M3 (Android 7.0).