This is being tracked by https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1850529 in Ubuntu. Ubuntu 16.04 has clang 6.0, and as pointed out this is known to result in miscompilation issues, which for some reason haven't really surfaced until now (firefox 71). I have tested backporting clang 6.0.1 to Ubuntu 16.04 with all the patches listed in https://hg.mozilla.org/mozilla-central/file/5f1704e88fa79ad4156497de208c87c58a228ca2/build/build-clang/clang-6-linux64.json (as suggested in https://bugzilla.mozilla.org/show_bug.cgi?id=1592571#c11), but it didn't help. I am considering attempting a backport of clang 8.
Please note that these Ubuntu builds (such as the one mentioned in https://bugzilla.mozilla.org/show_bug.cgi?id=1600467) are for testing purposes only, and the PPAs containing them (particularly https://launchpad.net/~ubuntu-mozilla-security/+archive/ubuntu/ppa) advertise that they are not meant for end users. Ubuntu developers do not intend to release a broken build of firefox to the Ubuntu archive. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1850529 Title: Crash after update to 71.0~b5+build1-0ubuntu0.16.04.1 Status in Mozilla Firefox: Confirmed Status in firefox package in Ubuntu: Fix Released Bug description: After update from: 70.0+build2-0ubuntu0.16.04.1 to 71.0~b5+build1-0ubuntu0.16.04.1 app is not starting. I got constantly message that I can Refresh Firefox (crash) or Start in safe mode (also crash). Tech details: Description: Ubuntu 16.04.6 LTS Release: 16.04 package name: 71.0~b5+build1-0ubuntu0.16.04.1 Crash log details: AdapterDeviceID: 0x1616 AdapterDriverVendor: mesa/i965 AdapterDriverVersion: 18.0.5.0 AdapterVendorID: 0x8086 BuildID: 20191028161640 ContentSandboxCapabilities: 119 ContentSandboxCapable: 1 ContentSandboxLevel: 4 CrashTime: 1572373123 DOMIPCEnabled: 1 FramePoisonBase: 9223372036600930304 FramePoisonSize: 4096 InstallTime: 1572364967 IsWayland: 0 IsWaylandDRM: 0 MozCrashReason: MOZ_RELEASE_ASSERT(len.isValid()) (Substring tuple length is invalid) Notes: Ubuntu 16.04.6 LTSFP(D00-L1000-W00000000-T000) WR? WR- OMTP? OMTP- ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384} ProductName: Firefox ReleaseChannel: beta SafeMode: 1 SecondsSinceLastCrash: 816 StartupCrash: 0 StartupTime: 1572373025 TelemetryEnvironment: {"build":{"applicationId":"{ec8030f7-c20a-464f-9b0e-13a3a9e97384}","applicationName":"Firefox","architecture":"x86-64","buildId":"20191028161640","version":"71.0","vendor":"Mozilla","displayVersion":"71.0b5","platformVersion":"71.0","xpcomAbi":"x86_64-gcc3","updaterAvailable":false},"partner":{"distributionId":null,"distributionVersion":null,"partnerId":null,"distributor":null,"distributorChannel":null,"partnerNames":[]},"system":{"memoryMB":15965,"virtualMaxMB":null,"cpu":{"count":4,"cores":2,"vendor":"GenuineIntel","family":6,"model":61,"stepping":4,"l2cacheKB":256,"l3cacheKB":3072,"speedMHz":2700,"extensions":["hasMMX","hasSSE","hasSSE2","hasSSE3","hasSSSE3","hasSSE4_1","hasSSE4_2","hasAVX","hasAVX2","hasAES"]},"os":{"name":"Linux","version":"4.15.0-66-generic","locale":"en-US"},"hdd":{"profile":{"model":null,"revision":null,"type":null},"binary":{"model":null,"revision":null,"type":null},"system":{"model":null,"revision":null,"type":null}},"gfx":{"D2DEnabled":null,"DWriteEnabled":null,"ContentBackend":"Skia","Headless":false,"adapters":[{"description":"Mesa DRI Intel(R) HD Graphics 5500 (Broadwell GT2) ","vendorID":"0x8086","deviceID":"0x1616","subsysID":null,"RAM":3072,"driver":null,"driverVendor":"mesa/i965","driverVersion":"18.0.5.0","driverDate":null,"GPUActive":true}],"monitors":[{"screenWidth":1366,"screenHeight":768}],"features":{"compositor":"none","gpuProcess":{"status":"blocked"},"wrQualified":{"status":"blocked-release-channel-intel"},"webrender":{"status":"unavailable-in-safe-mode"}}},"appleModelId":null},"settings":{"blocklistEnabled":true,"e10sEnabled":true,"e10sMultiProcesses":8,"telemetryEnabled":true,"locale":"en-US","intl":{},"update":{"channel":"beta","enabled":true,"autoDownload":false},"userPrefs":{"app.shield.optoutstudies.enabled":false,"browser.cache.disk.capacity":1048576,"browser.newtabpage.enabled":false,"browser.shell.checkDefaultBrowser":true,"browser.search.region":"US","browser.search.suggest.enabled":false,"browser.search.widget.inNavBar":false,"browser.startup.homepage":"<user-set>","browser.startup.page":3,"browser.urlbar.suggest.searches":false,"devtools.chrome.enabled":false,"devtools.debugger.remote-enabled":false,"extensions.blocklist.url":"https://blocklists.settings.services.mozilla.com/v1/blocklist/3/%20/%20/","extensions.formautofill.addresses.enabled":false,"extensions.formautofill.creditCards.enabled":false,"privacy.donottrackheader.enabled":true},"sandbox":{"effectiveContentProcessLevel":4},"addonCompatibilityCheckEnabled":true,"isDefaultBrowser":null},"profile":{}} ThreadIdNameMapping: 7556:"Gecko_IOThread",7557:"JS Watchdog",7558:"JS Helper",7559:"JS Helper",7560:"JS Helper",7561:"JS Helper",7562:"Timer",7563:"Netlink Monitor",7564:"Socket Thread",7568:"Cache2 I/O",7569:"Cookie",7570:"StreamTrans #1",7571:"GMPThread",7572:"Worker Launcher",7573:"SoftwareVsyncThread",7574:"Compositor",7575:"ImgDecoder #1",7576:"ImageIO",7580:"ImageBridgeChild",7581:"IPDL Background",7582:"DOM Worker",7584:"QuotaManager IO",7587:"StyleThread#0",7589:"StyleThread#2",7588:"StyleThread#1",7593:"DOM Worker",7630:"DataStorage",7631:"DNS Resolver #1",7632:"DNS Resolver #2",7633:"StreamTrans #7",7646:"IndexedDB #2",7647:"StreamTrans #8",7648:"StreamTrans #9",7649:"StreamTrans #10", Throttleable: 1 UptimeTS: 98.30915265 Vendor: Mozilla Version: 71.0 useragent_locale: en-US To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/1850529/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

