Firefox/Channels/Meetings/2020-08-04

Channel Meeting Details

• Tuesdays at 10am and Thursdays at 8am Pacific Time
• Riot #release-drivers for backchannel
• Past meeting notes: https://wiki.mozilla.org/Firefox/Channels/Meetings

Video/Teleconference Details

• Zoom Meeting ID: 536 097 768
• https://mozilla.zoom.us/j/536097768
• +17207072699,,536097768# US
• Find your local number: https://zoom.us/u/agItTmqIu

Attendees

RyanVM, Aryx, dveditz, jcristau, philipp, telin, kbrosnan, tmaity, standard8, roland, callek, gijs, tahn

Schedule Update

• 79.0 at 100% since Thursday, July 30
  • no dot release drivers for now
  • some possible uplifts coming for fenix
    • can spin a new GV release without a desktop dot release if needed

• 80.0b2 shipped Friday at 50%
• 80.0b3 shipped Monday at 100%
• 80.0b4 tomorrow (August 5)

• fenix 79.0.2 shipped to 8 new countries today

Desktop Stability

Nightly

mc2 crash rate: 1.67, crash incidence: 2.39%, mc1 summary score: 4.44 thursday mc2 crash rate: 1.74, crash incidence: 2.52%, mc1 summary score: 5.07

• crash in [@ nsFocusManager::SetFocusInner ] https://bugzilla.mozilla.org/show_bug.cgi?id=1656858
  • 8% of browser crashes, has a patch & also affecting 80.0b
• http3 crash in [@ core::slice::slice_index_len_fail] https://bugzilla.mozilla.org/show_bug.cgi?id=1655356
  • 1.38% of browser crashes
• Startup crashes in [@ mozilla::dom::ServiceWorkerRegistrar::GetShutdownPhase ] hanging around https://bugzilla.mozilla.org/show_bug.cgi?id=1471720
• new http3 crash in [@ neqo_http3::recv_message::RecvMessage::receive_internal] https://bugzilla.mozilla.org/show_bug.cgi?id=1656870
  • 1.44% of browser crashes
• macOS crash in [@ mozilla::a11y::GeckoTextMarkerRange::TextInternal ] seems to still be around after the fix in https://bugzilla.mozilla.org/show_bug.cgi?id=1650740 & also affecting 80.0b

• print topcrash https://bugzilla.mozilla.org/show_bug.cgi?id=1655746 is fixed (also in 80.0b3)

• content crashes dominated by IPCError-browser signatures

Beta

mc2 crash rate: 1.86, crash incidence: 2.54%, mc1 summary score: 5.46 thursday mc2 crash rate: 1.45, crash incidence: 0.98%, mc1 summary score: 7.01

[80.0b3]

• nsFocusManager::SetFocusInner (8%) & mozilla::a11y::GeckoTextMarkerRange::TextInternal (2% of browser crashes)
• startup crash in mozilla::ErrorLoadingSheet: https://bugzilla.mozilla.org/show_bug.cgi?id=1656261 - 1.8% of browser crashes
  • likely caused by some sort of corruption - difficult to debug without a good starting point
• startup crash in PLDHashTable::Add | nsBaseHashtable<T>::Put | Parser::Parse: https://bugzilla.mozilla.org/show_bug.cgi?id=1653908 - 3.5% of browser crashes
  • low number of affected installations
• necko shutdownhangs in mozilla::TaskController::GetRunnableForMTTask increasing in 80: https://bugzilla.mozilla.org/show_bug.cgi?id=1633342 - 6% of browser crashes
  • junior filed https://bugzilla.mozilla.org/show_bug.cgi?id=1656992 for a new case on macos
• shutdownhangs in mozilla::scache::StartupCache::GetBuffer: https://bugzilla.mozilla.org/show_bug.cgi?id=1656974 - 2% of browser crashes
• crash in mozilla::net::DocumentChannel::SetLoadFlags: https://bugzilla.mozilla.org/show_bug.cgi?id=1656984 - 1.8% of tab crashes
• (Crash in [@ nsMemoryReporterManager::RegisterReporterHelper]: https://bugzilla.mozilla.org/show_bug.cgi?id=1656973 - was quite frequent in b1&2, so far gone in b3)

Release

mc2 crash rate: 1.35, crash incidence: 1.30%, mc1 summary score: 2.98 thursday mc2 crash rate: 1.41, crash incidence: 0.74%, mc1 summary score: 5.90

[79.0]

• crash at shutdown in [@ mozilla::AppShutdown::DoImmediateExit]: https://bugzilla.mozilla.org/show_bug.cgi?id=1655793 - 0.7% of browser crashes
• crash in RtlDeleteCriticalSection | mozilla::layers::ImageContainer::~ImageContainer: https://bugzilla.mozilla.org/show_bug.cgi?id=1656987 - 0.7% of tab crashes

Mobile Stability

Fenix

QA

Nightly

• feature prioritization https://docs.google.com/spreadsheets/d/1zzd0384V9FZ0bWyU4QDofvU04vChEdKKak-1Dtro3Gs/edit#gid=1052618041
  • Due to limited bandwidth, we want to defer the following 2 features, still deciding the 3rd one
    • DoH: Robust UI Update (received confirmation from the feature owner), Webrender on Linux (deferral proposed, waiting for confirmation )
    • Found a 3rd and confirmed with the Feature owner WebGL Remoting (confirmed with Jeff and GCP. Will be enabled early beta ONLY for 81. Enable by default with QA verification with Fx82)

Aurora / Dev Edition

Beta

• testing is on track, no major concerns or issues
• received WNP testing PI ticket, documentation will be ready by Aug 14

Mobile

Action items

Feature Status Review

Fx80 is looking good

• Pioneer UI still challenged for 80
  • P1 bug list for uplift in Beta identified. Expected to land by weeks end. GO/no-go meeting set for Friday

Pulling together the feature list for Fx81 and confirming tracking status. So far things are looking good.

• macOS attribution has been moved out of Fx81 while the SBX team determines scope and priority
• Pioneer v2 (81) UI enhancements is light on the plans/details for Fx81. This could be due to the challenged status for the UI work in Fx80. Waiting to confirm details.

SUMO Report

• [roland] nothing to report. I heard from twitter and Romain Testard there is an issue with CCleaner wiping out add-on data but I don't see any reports of this

on SUMO from July 31-August 3rd ; I will check today's questions. Is there a bugzilla bug? roland will file a 3rd party software bug

• • https://mobile.twitter.com/ma1/status/1289572818078691330
  • https://community.ccleaner.com/topic/58613-problem-with-firefox-79/?tab=comments#comment-321277ner
  • workaround from CCleaner staff: quick update: while we work on getting a fix out, Firefox users can use this temporary workaround:
    • If cleaning with Custom Clean: ensure the Internet Cache Firefox cleaning rule is unchecked before running a Custom Clean.
    • If cleaning with Health Check: uncheck the Temporary Internet Files category in the 'Privacy' section after analyzing when you run Health Check.

Roundtable & Special Topics

Post-Mortem (Tues 2wks from GA Release)

• 78 post mortem right after this
  • notes https://docs.google.com/document/d/14XuugCDf2qa6PsHIRfCukVyFgX5BFQ_nICwDSxmtKLI/edit#
• 79 post mortem?
  • Probably week of August 17