Crash report: https://crash-stats.mozilla.org/report/index/5d3e0320-fb4e-48a0-bb92-255840210608

MOZ_CRASH Reason: MOZ_CRASH()

Top 10 frames of crashing thread:

0 mozglue.dll mozglue.dll@0x3f105 
1 ucrtbase.dll <unknown in ucrtbase.dll> 
2 ucrtbase.dll <unknown in ucrtbase.dll> 
3 mozglue.dll mozglue.dll@0x27af6 
4 xul.dll nsCOMPtr_base::assign_with_AddRef xpcom/base/nsCOMPtr.cpp:38
5  @0x303530303030302f 
6 ntdll.dll RtlpAllocateHeap 
7 xul.dll NS_NewNotificationCallbacksAggregation netwerk/base/nsNetUtil.cpp:2186
8 xul.dll mozilla::net::nsHttpChannel::DoConnectActual netwerk/protocol/http/nsHttpChannel.cpp:854
9 xul.dll mozilla::net::nsHttpChannel::OnCacheEntryAvailable netwerk/protocol/http/nsHttpChannel.cpp:3925

This is not only a necko crash. The signature is more general.

I looked at a couple reports and they more in js engine.

Isn't this just a continuation of bug 1673778?

(In reply to Dragana Damjanovic [:dragana] from comment #1)

This is not only a necko crash. The signature is more general.

I looked at a couple reports and they more in js engine.

Looking at the proto-signature of the aggregate of this week. Most of what I am seeing are IPC / DOM crashes, and the only JS signature (js::AutoEnterOOMUnsafeRegion::crash) represents less than 1%.

Checking for all signatures with js::AutoEnterOOMUnsafeRegion::crash, OOM | small does not even show up.

Can you clarify what is concerning about JS?