1649506 - Crash in [@ mozilla::SharedStyleSheetCache::LoadCompletedInternal]

Status: RESOLVED DUPLICATE of bug 1646330

(Core :: CSS Parsing and Computation, defect)

Description

[[:philipp]]

This bug is for crash report bp-e25faf7d-9103-424f-bcff-4f2ee0200630.

Top 10 frames of crashing thread:

0 xul.dll static mozilla::SharedStyleSheetCache::LoadCompletedInternal layout/style/SharedStyleSheetCache.cpp:294
1 xul.dll static mozilla::SharedStyleSheetCache::LoadCompleted layout/style/SharedStyleSheetCache.cpp:277
2 xul.dll mozilla::MozPromise<bool, bool, 1>::ThenValue<`lambda at /builds/worker/checkouts/gecko/layout/style/Loader.cpp:1520:11', `lambda at /builds/worker/checkouts/gecko/layout/style/Loader.cpp:1524:11'>::DoResolveOrRejectInternal xpcom/threads/MozPromise.h:769
3 xul.dll mozilla::MozPromise<bool, bool, 1>::ThenValueBase::ResolveOrRejectRunnable::Run xpcom/threads/MozPromise.h:410
4 xul.dll mozilla::SchedulerGroup::Runnable::Run xpcom/threads/SchedulerGroup.cpp:146
5 xul.dll nsThread::ProcessNextEvent xpcom/threads/nsThread.cpp:1234
6 xul.dll NS_ProcessNextEvent xpcom/threads/nsThreadUtils.cpp:504
7 xul.dll mozilla::ipc::MessagePump::Run ipc/glue/MessagePump.cpp:87
8 xul.dll MessageLoop::RunHandler ipc/chromium/src/base/message_loop.cc:309
9 xul.dll MessageLoop::Run ipc/chromium/src/base/message_loop.cc:291

this crash signature is popping up in firefox 79.0b with MOZ_DIAGNOSTIC_ASSERT(entry.GetData().Expired() || aData.mLoader->ShouldBypassCache()) (Overriding existing complete entry?) - so hopefully the issue would only hit devedition users.

Comment 1

[Emilio Cobos Álvarez (:emilio)]

This is bug 1646330, just that for some reason in beta it's showing up with a different stack. Maybe different inlining...

I'd love to be able to reproduce that :/. Though as you said it only affects devedition / nightly, and it doesn't seem very frequent.