Logs: https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Linux%20CFI/11027


Failing tests:
InspectorSessionStateTest.MultipleAgents
InspectorSessionStateTest.SimpleFields
InspectorSessionStateTest.MapFields

Relevant stack traces:
[ RUN      ] InspectorSessionStateTest.MultipleAgents
[25792:25792:1030/115529.826892:16967722304:FATAL:devtools_session.cc(119)] Check failed: IsDetached().
#0 0x0000072a700f base::debug::StackTrace::StackTrace()
#1 0x0000071ee24a logging::LogMessage::~LogMessage()
#2 0x000008c6f2da blink::DevToolsSession::~DevToolsSession()
#3 0x000006666b93 blink::InspectorSessionStateTest_MultipleAgents_Test::TestBody()
#4 0x0000055144e4 testing::Test::Run()


[ RUN      ] InspectorSessionStateTest.SimpleFields
[21271:21271:1030/115407.558962:16885454392:FATAL:devtools_session.cc(119)] Check failed: IsDetached().
#0 0x0000072a700f base::debug::StackTrace::StackTrace()
#1 0x0000071ee24a logging::LogMessage::~LogMessage()

[ RUN      ] InspectorSessionStateTest.MapFields
[21289:21289:1030/115406.808689:16884704101:FATAL:devtools_session.cc(119)] Check failed: IsDetached().
#0 0x0000072a700f base::debug::StackTrace::StackTrace()
#1 0x0000071ee24a logging::LogMessage::~LogMessage()


https://chromium-review.googlesource.com/c/chromium/src/+/1282207 seems suspicious. Assigning to dgozman@ for further triage.