Intermittent CI failure: compute-sanitizer failure during cooperative groups testing

For example: https://buildkite.com/julialang/cuda-dot-jl/builds/4509#018b8c02-a7a7-455f-be50-ff1a7436af22

Error in testset core/device/intrinsics/cooperative_groups:
Test Failed at /var/lib/buildkite-agent/builds/gpuci-7/julialang/cuda-dot-jl/test/core/device/intrinsics/cooperative_groups.jl:231
  Expression: Array(output) == data
   Evaluated: ComplexF64[0.07336635446929285 + 0.34924148955718615im, 0.6988266836914685 + 0.6282647403425017im, 0.9149290036628314 + 0.19280811624587546im, 0.7701803478856664 + 0.7805192636751863im, 0.6702639583444937 + 0.16771210647092682im, 0.5710874493423871 + 0.4528085872833483im, 0.30232547191787174 + 0.0013502779247226426im, 0.5670236732404312 + 0.6159379234562881im, 0.19573857852575793 + 0.012461945950411835im, 0.3119923865097316 + 0.11479916823306191im  …  0.20477362871188332 + 0.7724300220542689im, 0.7691341576393648 + 0.23445957969632014im, 0.4128691289999623 + 0.5143767474826676im, 0.13347060290071522 + 0.19396959201197161im, 0.09667622554846589 + 0.2028899814856957im, 0.4581235191442973 + 0.6710265656165579im, 0.7760604508039658 + 0.387627464826093im, 0.7688636204577562 + 0.0797207246521987im, 0.5653843248915043 + 0.7953760692492398im, 0.6220785723529717 + 0.5172926740585873im] == ComplexF64[0.07336635446929285 + 0.34924148955718615im, 0.6988266836914685 + 0.6282647403425017im, 0.9149290036628314 + 0.19280811624587546im, 0.7701803478856664 + 0.7805192636751863im, 0.6702639583444937 + 0.16771210647092682im, 0.5710874493423871 + 0.4528085872833483im, 0.30232547191787174 + 0.0013502779247226426im, 0.5670236732404312 + 0.6159379234562881im, 0.19573857852575793 + 0.012461945950411835im, 0.3119923865097316 + 0.11479916823306191im  …  0.20477362871188332 + 0.7724300220542689im, 0.7691341576393648 + 0.23445957969632014im, 0.4128691289999623 + 0.5143767474826676im, 0.13347060290071522 + 0.19396959201197161im, 0.09667622554846589 + 0.2028899814856957im, 0.4581235191442973 + 0.6710265656165579im, 0.7760604508039658 + 0.387627464826093im, 0.7688636204577562 + 0.0797207246521987im, 0.5653843248915043 + 0.7953760692492398im, 0.6220785723529717 + 0.5172926740585873im]

Start with the Buildkite failure and test/core/device/intrinsics/cooperative_groups.jl at line 231, then inspect the cooperative groups test around the failing Array(output) == data assertion. Reproduce the compute-sanitizer failure and determine why the test intermittently produces the reported mismatch. Done means the cooperative groups test passes reliably under the affected CI run.