Seeing crashes on a few different GPU FYI bots in V8.  Crash stack is:

v8::internal::RecordMigratedSlotVisitor::RecordMigratedSlot
v8::internal::BodyDescriptorApply<v8::internal::CallIterateBody,void,v8::internal::Map *,v8::internal::HeapObject *,int,v8::internal::RecordMigratedSlotVisitor *>
v8::internal::EvacuateVisitorBase::RawMigrateObject<0>
v8::internal::LiveObjectVisitor::VisitBlackObjects<v8::internal::EvacuateOldSpaceVisitor,v8::internal::MajorNonAtomicMarkingState>
v8::internal::FullEvacuator::RawEvacuatePage
v8::internal::Evacuator::EvacuatePage
v8::internal::PageEvacuationTask::RunInParallel
v8::internal::ItemParallelJob::Task::RunInternal
base::debug::TaskAnnotator::RunTask
base::internal::TaskTracker::RunOrSkipTask
base::internal::TaskTracker::RunAndPopNextTask
base::internal::SchedulerWorker::RunWorker
base::internal::SchedulerWorker::RunPooledWorker

The Win10 FYI Release (NVIDIA) (https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Win10%20FYI%20Release%20%28NVIDIA%29) bot seems to be the most affected but Win7 FYI x64 Release (NVIDIA) (https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Win7%20FYI%20x64%20Release%20(NVIDIA)) also has failures.

All the failures seen are ES3 dEQP framebuffer tests:
gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_deqp_functional_gles3_fborender_recreate_color_00
gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_deqp_functional_gles3_fborender_recreate_color_01
gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_deqp_functional_gles3_framebufferblit_default_framebuffer_04
gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_deqp_functional_gles3_framebufferblit_default_framebuffer_06

Failures seen across a bunch of permutations of backends:
webgl2_conformance_d3d11_validating_tests
webgl2_conformance_gl_passthrough_tests
webgl2_conformance_gl_passthrough_tests
webgl2_conformance_tests

No obvious culperate, I didn't spot any relevent changes to Chrome or V8 around the time of the first failure: https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Win10%20FYI%20Release%20%28NVIDIA%29/2741