Nvidia, GK107 [GeForce GT 640], "wrQualified":{"status":"available"} This bug was filed from the Socorro interface and is report bp-25101a76-bf51-466a-b93d-4792b0180913. > EXCEPTION_ACCESS_VIOLATION_READ ============================================================= Top 10 frames of crashing thread: 0 xul.dll static void std::alloc::rust_oom src/libstd/alloc.rs:137 1 xul.dll static struct webrender::prim_store::PrimitiveIndex webrender::prim_store::PrimitiveStore::add_primitive gfx/webrender/src/prim_store.rs:1471 2 xul.dll static void webrender::display_list_flattener::DisplayListFlattener::add_primitive gfx/webrender/src/display_list_flattener.rs:873 3 xul.dll static void webrender::display_list_flattener::DisplayListFlattener::flatten_items gfx/webrender/src/display_list_flattener.rs:292 4 xul.dll static void webrender::display_list_flattener::DisplayListFlattener::flatten_items gfx/webrender/src/display_list_flattener.rs:292 5 xul.dll static void webrender::display_list_flattener::DisplayListFlattener::flatten_root gfx/webrender/src/display_list_flattener.rs:255 6 xul.dll static void webrender::display_list_flattener::DisplayListFlattener::flatten_iframe gfx/webrender/src/display_list_flattener.rs:485 7 xul.dll static void webrender::display_list_flattener::DisplayListFlattener::flatten_items gfx/webrender/src/display_list_flattener.rs:292 8 xul.dll static void webrender::display_list_flattener::DisplayListFlattener::flatten_items gfx/webrender/src/display_list_flattener.rs:292 9 xul.dll static void webrender::display_list_flattener::DisplayListFlattener::flatten_root gfx/webrender/src/display_list_flattener.rs:255 =============================================================

There are 8 crashes (from 3 installations) in nightly 64 with buildid 20180913100107. In analyzing the backtrace, the regression may have been introduced by patch [1] to fix bug 1490282. :jrmuizel, could you investigate please ? [1] https://hg.mozilla.org/mozilla-central/rev?node=cd04aed8011f

Jeff -- I'm moving this to P3. Is there someone else who can look at this?

Moving the need-info to kvark

I'd be happy to, but I'd really like to finish the backface-visibility story first (not to mention there are 2 other bugs in the queue after it, at least, but they can be pushed back a bit). somewhat related by not really the cause of it, > self.prim_store.primitives.reserve(self.prim_count_estimate); This reserves more items than we need. Should be using `pipeline.display_list.prim_count_estimate();` instead.

Crashes with this signature haven't been seen on Nightly builds since 2018-09-18. Can we close this?

Sure. If it comes back we can investigate.