1568887 - Crash in [@ RetainedDisplayListBuilder::MergeDisplayLists] (Item found was in the wrong list!)

Status: RESOLVED DUPLICATE of bug 1569131

(Core :: Graphics: WebRender, defect, P2)

Description

[Aria Beingessner [:Gankra]]

oh boy document splitting is incredibly unstable on my windows machine (browser starts flickering, eventually goes solid black or solid white, then eventually crashes. Doing boring things like just looking at bugzilla.

short desc because it might crash at any second

Comment 1

[Aria Beingessner [:Gankra]]

error message is "Item found was in the wrong list! type 4 (outer type was 49 at depth 1, now is 0)"

https://crash-stats.mozilla.org/report/index/dbc5e5a0-74ba-4c4d-98b7-3728d0190725#tab-details

Comment 2

[Aria Beingessner [:Gankra]]

Attachment: about:support

Comment 3

[Aria Beingessner [:Gankra]]

Totally different signature for the same symptoms: https://crash-stats.mozilla.org/report/index/1ecb917a-eb9f-4ab1-bf0b-75da00190725

webrender::resource_cache::ResourceCache::block_until_all_resources_added

"Vector image error Unknown error"

Having trouble making sense of the crash reports, it seems like i'm getting a report for every content process that crashes after the GPU process crashes now?

Comment 4

[Aria Beingessner [:Gankra]]

Aha ok so now I understand why my crash reports are flooded with things. Each "black out flicker" is one of these MOZ_RELEASE_ASSERT(mIsSome) crashes:

https://crash-stats.mozilla.org/report/index/08eaa7bb-4f44-41f0-bce2-ee6d10190725

This is a "good" sign in that those asserts were added in the new patches to WebRenderBridgeParent. Hopefully just a rebase error, will review my patches again.