ccameron@ could you please look into this.please feel free to re-assigned back if needed. thanks in advance !

Recording the stack for posterity. Spinning a patch that fixes the issue

#0 0x7fe23c1839e0 __interceptor_backtrace
#1 0x7fe246561492 base::debug::StackTrace::StackTrace()
#2 0x7fe2465f7e5d logging::LogMessage::~LogMessage()
#3 0x7fe260b77f71 blink::DrawingBuffer::resolveAndBindForReadAndDraw()
#4 0x7fe25ad05b4b blink::WebGLRenderingContextBase::paintRenderingResultsToCanvas()
#5 0x7fe2566b258a blink::HTMLCanvasElement::getSourceImageForCanvas()
#6 0x7fe2566af1d1 blink::HTMLCanvasElement::notifyListenersCanvasChanged()
#7 0x7fe260b65530 blink::DrawingBuffer::prepareTextureMailboxInternal()
#8 0x7fe260b64e49 blink::DrawingBuffer::PrepareTextureMailbox()
#9 0x7fe25e95def3 cc::TextureLayer::Update()
#10 0x7fe24b5dd430 cc::LayerTree::UpdateLayers()
#11 0x7fe25ea96eb4 cc::LayerTreeHostInProcess::DoUpdateLayers()
#12 0x7fe25ea9596f cc::LayerTreeHostInProcess::UpdateLayers()
#13 0x7fe25eaa598b cc::ProxyMain::BeginMainFrame()

ClusterFuzz has detected this issue as fixed in range 428077:428329.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5849038600798208

Fuzzer: inferno_layout_test_unmodified
Job Type: linux_msan_chrome
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  !m_drawingBuffer->m_stateRestorer in DrawingBuffer.cpp
  blink::DrawingBuffer::resolveAndBindForReadAndDraw
  blink::WebGLRenderingContextBase::paintRenderingResultsToCanvas
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_msan_chrome&range=427174:427199
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_msan_chrome&range=428077:428329

Minimized Testcase (6.66 Kb): https://cluster-fuzz.appspot.com/download/AMIfv97hYuaqXLRpvqWzX02L-iN657rcgH5noTLK9bORzTZOKdXNbRPZJY_VTZ_RQFN-DxrpzWt2tOWRjcggvHd-k2hZqpUU70ukNDWP7ntjVr7_9hJ1UAHqq66ItyU8Q9wqAva0qVvWZxv-8I4l0e0Jb9hpBcRl-w?testcase_id=5849038600798208

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

I think this is now fixed.

Removing EditIssue view restrictions from ClusterFuzz filed bugs. If you believe that this issue should still be restricted, please reapply the label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot