Bot: https://build.chromium.org/p/chromium.chromiumos/builders/Linux%20ChromiumOS%20Ozone%20Tests%20%281%29?numbuilds=200

First build: https://build.chromium.org/p/chromium.chromiumos/builders/Linux%20ChromiumOS%20Ozone%20Tests%20%281%29/builds/46388

Suspected CL: https://codereview.chromium.org/2840043003

Excerpt from the log of one of the failing tests:

[ RUN      ] ContentVerifierPolicyTest.PolicyCorruptedOnStartup
[8019:8019:0429/231558.540165:6997787738:WARNING:diagnostics_writer.cc(209)] [FAIL] 002 SQLiteIntegrityCookie (File not found)
[8019:8019:0429/231558.542897:6997790371:WARNING:diagnostics_writer.cc(209)] Finished 18 tests.
[8019:8019:0429/231558.542929:6997790401:WARNING:diagnostics_writer.cc(209)] Finished Recovery for: Install type
[8019:8019:0429/231558.542941:6997790412:WARNING:diagnostics_writer.cc(209)] Finished Recovery for: Chrome version test
[8019:8019:0429/231558.542951:6997790422:WARNING:diagnostics_writer.cc(209)] Finished Recovery for: User data path
[8019:8019:0429/231558.542960:6997790431:WARNING:diagnostics_writer.cc(209)] Finished Recovery for: Local state path
[8019:8019:0429/231558.542970:6997790441:WARNING:diagnostics_writer.cc(209)] Finished Recovery for: App dictionaries directory path
[8019:8019:0429/231558.542979:6997790449:WARNING:diagnostics_writer.cc(209)] Finished Recovery for: Resources path
[8019:8019:0429/231558.542988:6997790459:WARNING:diagnostics_writer.cc(209)] Finished Recovery for: Available disk space
[8019:8019:0429/231558.542998:6997790469:WARNING:diagnostics_writer.cc(209)] Finished Recovery for: User preferences integrity
[8019:8019:0429/231558.543009:6997790480:WARNING:diagnostics_writer.cc(209)] Finished Recovery for: Local state integrity
[8019:8019:0429/231558.543019:6997790490:WARNING:diagnostics_writer.cc(209)] Finished Recovery for: Bookmark file
[8019:8019:0429/231558.543033:6997790504:WARNING:diagnostics_writer.cc(209)] Finished Recovery for: Web Data database
[8019:8019:0429/231558.543043:6997790514:WARNING:diagnostics_writer.cc(209)] Finished Recovery for: Cookie database
[8019:8019:0429/231558.543052:6997790523:WARNING:diagnostics_writer.cc(209)] Finished Recovery for: Favicons database
[8019:8019:0429/231558.543060:6997790531:WARNING:diagnostics_writer.cc(209)] Finished Recovery for: History database
[8019:8019:0429/231558.543069:6997790540:WARNING:diagnostics_writer.cc(209)] Finished Recovery for: Top Sites database
[8019:8019:0429/231558.543079:6997790550:WARNING:diagnostics_writer.cc(209)] Finished Recovery for: Database tracker database
[8019:8019:0429/231558.543088:6997790559:WARNING:diagnostics_writer.cc(209)] Finished Recovery for: NSS certificate database
[8019:8019:0429/231558.543097:6997790568:WARNING:diagnostics_writer.cc(209)] Finished Recovery for: NSS Key database
[8019:8019:0429/231558.543103:6997790574:WARNING:diagnostics_writer.cc(209)] Finished All Recovery operations.
[8019:8019:0429/231558.641216:WARNING:audio_manager.cc(293)] Multiple instances of AudioManager detected
[8019:8019:0429/231558.641251:WARNING:audio_manager.cc(254)] Multiple instances of AudioManager detected
[8019:8019:0429/231558.655005:ERROR:shell_port_mash.cc(390)] Not implemented reached in virtual void ash::mus::ShellPortMash::AddDisplayObserver(ash::WmDisplayObserver *)
[8019:8019:0429/231558.655825:ERROR:ash_window_tree_host_mus.cc(32)] Not implemented reached in virtual bool ash::AshWindowTreeHostMus::ConfineCursorToRootWindow()
[8019:8019:0429/231558.668311:ERROR:shell_port_mash.cc(222)] Not implemented reached in virtual bool ash::mus::ShellPortMash::IsInUnifiedMode() const
[8019:8019:0429/231558.668936:ERROR:shell_port_mash.cc(203)] Not implemented reached in virtual const display::ManagedDisplayInfo &ash::mus::ShellPortMash::GetDisplayInfo(int64_t) const
[8019:8040:0429/231558.723254:WARNING:freezer_cgroup_process_manager.cc(61)] Cgroup freezer does not exist or is not writable. Unable to freeze renderer processes.
[8019:8019:0429/231558.756524:FATAL:window_tree_client.cc(589)] Check failed: frame_sink_id.
#0 0x00000304a8ac base::debug::StackTrace::StackTrace()
#1 0x00000305d8e1 logging::LogMessage::~LogMessage()
#2 0x000004918eba aura::WindowTreeClient::OnSetDisplayRootDone()
#3 0x000001dddd41 ui::mojom::WindowManagerClient_SetDisplayRoot_ForwardToCallback::Accept()
#4 0x000003efcf59 mojo::InterfaceEndpointClient::HandleValidatedMessage()
#5 0x000003f0237b mojo::internal::MultiplexRouter::ProcessIncomingMessage()
#6 0x000003f01d99 mojo::internal::MultiplexRouter::Accept()
#7 0x000003efbed8 mojo::Connector::ReadSingleMessage()
#8 0x000003efc381 mojo::Connector::ReadAllAvailableMessages()
#9 0x000003f098c4 mojo::SimpleWatcher::OnHandleReady()
#10 0x0000030d2702 base::debug::TaskAnnotator::RunTask()
#11 0x00000306316b base::MessageLoop::RunTask()
#12 0x00000306348b base::MessageLoop::DeferOrRunPendingTask()
#13 0x0000030639cd base::MessageLoop::DoWork()
#14 0x000003065169 base::MessagePumpLibevent::Run()
#15 0x000003062e9e base::MessageLoop::RunHandler()
#16 0x000003082c13 base::RunLoop::Run()
#17 0x000003609ca9 content::RunAllPendingInMessageLoop()
#18 0x000003100768 InProcessBrowserTest::PreRunTestOnMainThread()
#19 0x0000035d9f78 content::BrowserTestBase::ProxyRunTestOnMainThreadLoop()
#20 0x0000031340b2 ChromeBrowserMainParts::PreMainMessageLoopRunImpl()
#21 0x0000031331ad ChromeBrowserMainParts::PreMainMessageLoopRun()
#22 0x0000018b38db chromeos::ChromeBrowserMainPartsChromeos::PreMainMessageLoopRun()
#23 0x000001fd7b01 content::BrowserMainLoop::PreMainMessageLoopRun()
#24 0x0000022a1b37 content::StartupTaskRunner::RunAllTasksNow()
#25 0x000001fd5fa5 content::BrowserMainLoop::CreateStartupTasks()
#26 0x000001fda08a content::BrowserMainRunnerImpl::Initialize()
#27 0x000001fd3637 content::BrowserMain()
#28 0x000003007307 content::ContentMainRunnerImpl::Run()
#29 0x0000049a3835 service_manager::Main()
#30 0x0000030062c4 content::ContentMain()
#31 0x0000035d994d content::BrowserTestBase::SetUp()
#32 0x0000030fef7b InProcessBrowserTest::SetUp()
#33 0x000003bf7231 testing::Test::Run()
#34 0x000003bf7d40 testing::TestInfo::Run()
#35 0x000003bf8277 testing::TestCase::Run()
#36 0x000003bff2c7 testing::internal::UnitTestImpl::RunAllTests()
#37 0x000003bfef4b testing::UnitTest::Run()
#38 0x0000031120d6 base::TestSuite::Run()
#39 0x00000303ea9c (anonymous namespace)::MashTestLauncherDelegate::RunTestSuite()
#40 0x000003606b84 content::LaunchTests()
#41 0x00000303e586 RunMashBrowserTests()
#42 0x00000303e2d7 main
#43 0x7f0bfe750f45 __libc_start_main
#44 0x00000061a4fe <unknown>

[1:1:0100/000000.999783:ERROR:broker_posix.cc(41)] Invalid node channel message


Assigning to sky@, who authored the suspected CL. I am going to speculatively revert now.