1379019 - stylo: site issue: tab crash [@ nsCSSFrameConstructor::FindFrameForContentSibling ] on youtube.com

Status: RESOLVED FIXED

(Core :: CSS Parsing and Computation, defect, P1)

Description

[Darkspirit]

Nightly 56 x64 20170706130309 @ Debian Testing (Linux 4.9.0-3-amd64, Radeon RX480)

I am unsure if this is a stylo bug,
but it happend while watching https://www.youtube.com/watch?v=PdGSBeZPoRo
and I saw mozilla::ServoRestyleManager::DoProcessPendingRestyles
in bp-21c9f7ab-867a-4dfc-b0e5-8d7aa0170706.

At this time I also had
gfx.webrender.enabled;true
gfx.webrendest.enabled;false
but resetted them after the tab crash. Later I got bug 1379018.

I don't know if this might be relevant, but I am testing extensions.webextensions.remote;true since today (bug 1357487 comment 4).

Comment 1

[Darkspirit]

No it can also happen without webrender+webrendest+OOPwebextensions.
bp-0c523c28-e1ca-4ec7-807d-0c4f30170706.

I should try this with a clean profile tomorrow. Or with that debug build from bug 1378064 comment 6 where I learned how to get RUST_LOG=debug.

Comment 2

[Darkspirit]

Attachment: Screenshot_20170707_014519.png

This happend between the two reported crash signatures: the red video progress bar is missing. I can't reproduce this.

Comment 3

[Darkspirit]

Attachment: Screenshot_20170707_014527.png

Then I wanted to leave fullscreen and ended like that. I switched to another tab, came back, got the e10s loading circle and then I closed the whole browser.
After starting Nightly again, I found bp-b890844a-8440-41e6-97f6-246720170706 [@ IPCError-browser | ShutDownKill ] on about:crashes.

This seems a bit like bug 137806 vice versa and bug 1377739.

Comment 4

[Darkspirit]

correction:
> This seems a bit like bug 1378064 [...]

Comment 5

[Xidorn Quan [:xidorn] UTC+10]

I see APZ from the stack. This may be related to bug 1371450 as well I guess.

Comment 6

[Darkspirit]

Last crash with Build 20170716100258 so far.

Comment 7

[Hiroyuki Ikezoe (:hiro)]

Sure, let's close this.