UNADDRESSABLE ACCESS: reading 0x00000008-0x0000000c 4 byte(s)
# 0 cc.dll!cc::TaskRunnerProvider::ImplThreadTaskRunner                        [cc\trees\task_runner_provider.cc:19]
# 1 cc::`anonymous namespace'::LayerTreeHostAnimationTestAddAnimationAfterAnimating::DrawLayersOnThread [cc\trees\layer_tree_host_unittest_animation.cc:1348]
# 2 cc::LayerTreeHostImplForTesting::DrawLayers                                [cc\test\layer_tree_test.cc:242]
# 3 cc.dll!cc::ProxyImpl::DrawAndSwapInternal                                  [cc\trees\proxy_impl.cc:648]
# 4 cc.dll!cc::ProxyImpl::ScheduledActionDrawAndSwapIfPossible                 [cc\trees\proxy_impl.cc:532]
# 5 cc::ProxyImplForTest::ScheduledActionDrawAndSwapIfPossible                 [cc\test\proxy_impl_for_test.cc:41]
# 6 cc.dll!cc::Scheduler::DrawAndSwapIfPossible                                [cc\scheduler\scheduler.cc:614]
# 7 cc.dll!cc::Scheduler::ProcessScheduledActions                              [cc\scheduler\scheduler.cc:691]
# 8 cc.dll!cc::Scheduler::OnBeginImplFrameDeadline                             [cc\scheduler\scheduler.cc:603]
# 9 cc.dll!base::internal::Invoker<>::Run                                      [base\bind_internal.h:324]
#10 cc.dll!base::CancelableCallback<>::Forward                                 [base\cancelable_callback.h:107]
#11 base.dll!base::debug::TaskAnnotator::RunTask                               [base\debug\task_annotator.cc:51]
#12 base.dll!base::MessageLoop::RunTask                                        [base\message_loop\message_loop.cc:494]
#13 base.dll!base::MessageLoop::DeferOrRunPendingTask                          [base\message_loop\message_loop.cc:503]
#14 base.dll!base::MessageLoop::DoWork                                         [base\message_loop\message_loop.cc:627]
#15 base.dll!base::MessagePumpDefault::Run                                     [base\message_loop\message_pump_default.cc:35]
#16 base.dll!base::MessageLoop::RunHandler                                     [base\message_loop\message_loop.cc:457]
#17 base.dll!base::Thread::Run                                                 [base\threading\thread.cc:205]
#18 base.dll!base::Thread::ThreadMain                                          [base\threading\thread.cc:256]
#19 base.dll!base::`anonymous namespace'::ThreadFunc                           [base\threading\platform_thread_win.cc:83]
#20 KERNEL32.dll!BaseThreadInitThunk                                          +0x11     (0x75bb337a <KERNEL32.dll+0x1337a>)
Note: @0:06:38.358 in thread 9232
Note: instruction: mov    0x08(%ecx) -> %eax
Suppression (error hash=#627BAF519404A899#):
For more info on using suppressions see http://dev.chromium.org/developers/how-tos/using-drmemory#TOC-Suppressing-error-reports-from-the-
{
UNADDRESSABLE ACCESS
name=<insert_a_suppression_name_here>
cc.dll!cc::TaskRunnerProvider::ImplThreadTaskRunner
*!cc::`anonymous namespace'::LayerTreeHostAnimationTestAddAnimationAfterAnimating::DrawLayersOnThread
*!cc::LayerTreeHostImplForTesting::DrawLayers
cc.dll!cc::ProxyImpl::DrawAndSwapInternal
cc.dll!cc::ProxyImpl::ScheduledActionDrawAndSwapIfPossible
*!cc::ProxyImplForTest::ScheduledActionDrawAndSwapIfPossible
cc.dll!cc::Scheduler::DrawAndSwapIfPossible
cc.dll!cc::Scheduler::ProcessScheduledActions
cc.dll!cc::Scheduler::OnBeginImplFrameDeadline
cc.dll!base::internal::Invoker<>::Run
cc.dll!base::CancelableCallback<>::Forward
base.dll!base::debug::TaskAnnotator::RunTask
base.dll!base::MessageLoop::RunTask
base.dll!base::MessageLoop::DeferOrRunPendingTask
base.dll!base::MessageLoop::DoWork
base.dll!base::MessagePumpDefault::Run
base.dll!base::MessageLoop::RunHandler
base.dll!base::Thread::Run
base.dll!base::Thread::ThreadMain
base.dll!base::`anonymous namespace'::ThreadFunc
KERNEL32.dll!BaseThreadInitThunk
}

First occurence appears to be at https://build.chromium.org/p/chromium.memory.fyi/builders/Windows%20Unit%20%28DrMemory%20full%29%20%285%29/builds/7742

CL of concern at https://codereview.chromium.org/2151433004