Open Bug 1649084 Opened 5 months ago Updated 5 months ago

Crash in [@ mozalloc_abort | moz_xmalloc | mozilla::dom::Document::MatchMedia]


(Core :: DOM: Bindings (WebIDL), defect)





(Reporter: gsvelto, Unassigned)


(Keywords: crash)

Crash Data

This bug is for crash report bp-da4e9606-8d07-453c-8711-348ee0200628.

Top 9 frames of crashing thread:

0 mozglue.dll mozalloc_abort memory/mozalloc/mozalloc_abort.cpp:33
1 mozglue.dll mozalloc_handle_oom memory/mozalloc/mozalloc_oom.cpp:51
2 mozglue.dll moz_xmalloc memory/mozalloc/mozalloc.cpp:54
3 xul.dll mozilla::dom::Document::MatchMedia dom/base/Document.cpp:8429
4 xul.dll nsGlobalWindowInner::MatchMedia dom/base/nsGlobalWindowInner.cpp:3329
5 xul.dll mozilla::dom::Window_Binding::matchMedia dom/bindings/WindowBinding.cpp:3837
6 xul.dll mozilla::dom::binding_detail::GenericMethod<mozilla::dom::binding_detail::MaybeCrossOriginObjectThisPolicy, mozilla::dom::binding_detail::ThrowExceptions> dom/bindings/BindingUtils.cpp:3219
7  @0x11184179c44 
8 xul.dll trunc 

At first I thought this might be related to bug 1612848 but it's a different thing. The oldest reliable crash we have on report has buildid 20200514211331. We're tripping over an assertion in the memory allocator but the crashes don't appear to be OOMs. The OOM allocation size annotation is not present in the crash reports and they all have plenty of memory available.

Some of the URLs and comments in the reports point to video streaming - which is fairly obvious given this stack. There was no single URL standing out with the exception of this one which was present in three crash reports:

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