This bug is for crash report bp-d7ba3e48-bca4-4342-a84e-032d60191006.

Seen while looking at nightly crash stats: https://bit.ly/2OG1Mrh. Crashes started in 20191005100501 and are Windows only. 4 crashes/2 installs so far.

Looks as if it may be related to Bug 1580063.

Top 7 frames of crashing thread:

0 xul.dll static void webrender::picture::TileNode::update_dirty_rects gfx/wr/webrender/src/picture.rs:4491
1 xul.dll static void webrender::picture::TileNode::update_dirty_rects gfx/wr/webrender/src/picture.rs:4493
2 xul.dll static void webrender::picture::TileNode::update_dirty_rects gfx/wr/webrender/src/picture.rs:4493
3 xul.dll static void webrender::picture::TileCacheInstance::post_update gfx/wr/webrender/src/picture.rs:1839
4 xul.dll static union core::option::Option<euclid::rect::Rect<f32, webrender_api::units::PicturePixel>> webrender::prim_store::PrimitiveStore::update_visibility gfx/wr/webrender/src/prim_store/mod.rs:2317
5 xul.dll static union core::option::Option<euclid::rect::Rect<f32, webrender_api::units::PicturePixel>> webrender::prim_store::PrimitiveStore::update_visibility gfx/wr/webrender/src/prim_store/mod.rs:1978
6 xul.dll static union core::option::Option<webrender::render_task_graph::RenderTaskId> webrender::frame_builder::FrameBuilder::build_layer_screen_rects_and_cull_layers gfx/wr/webrender/src/frame_builder.rs:341

Hey Glenn, could you take a look at this?

Unfortunately the call stack doesn't show anything obvious, and the crash volume is very low (just a couple of crashes so far, it seems). We'll probably need a URL + repro steps in order to resolve this one.

URLs are:

• https://www.overclock.net/forum/index.php
• https://www.youtube.com/watch?v=mwi1iTWU4RY

Thanks! I have done a bit of testing with those URLs and been unable to repro so far. Is anyone else able to reliably reproduce the crash?

Adding Timea to see if someone at Softvision can try to reproduce. All 4 crashes were from Win 10.0.18362.

Hey Marcia, tried to reproduce on my system but I have Intel graphics and can't reproduce the issue.
All of the crashes where on AMD systems, so I will redirect this to a colleague with AMD card to take a look over it.

The crash doesn't occur on my end either.
I've got an AMD RX550 and I'm using Window 10.0.18362

P3, low volume and we haven't been able to reproduce, I'll call this fix-optional for 71 for now.

I'll call this FIXED

Just had a crash with this signature https://crash-stats.mozilla.org/report/index/299b254f-6f97-4d06-965b-6d02d0220505. I don't have specific STR though. I was chatting on Slack while it happened.