The result is a list of CLs that change the crashed files. 

Author: caryclark
Project: chromium-pdfium
Changelist: https://pdfium.googlesource.com/pdfium.git/+/8f875507a986d10335e40a5f7c1679aff9770d0a
Time: Tue Dec 06 13:49:34 2016 -0800
Files cfx_renderdevice.cpp, cpdf_renderstatus.cpp are changed in this cl (and is part of stack frame #1, "CFX_RenderDevice::DrawPathWithBlend")
Minimum distance from crash line to modified line: 93. (file: cfx_renderdevice.cpp, crashed on: 529, modified: 622).

It looks like this change

commit fb362089d952950212ccf159f86a46923f223172
Author: dsinclair <dsinclair@chromium.org>
Date:   Tue Aug 9 06:50:28 2016 -0700

    Fixup various overflow conditions

Happens just a bit late to catch this.

ClusterFuzz has detected this issue as fixed in range 440242:440280.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6706881386250240

Fuzzer: ochang_search_index_mutator
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Float-cast-overflow
Crash Address: 
Crash State:
  CFX_FloatRect::GetOuterRect
  CFX_RenderDevice::DrawPathWithBlend
  CPDF_RenderStatus::ProcessPath
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_ubsan_chrome&range=435261:438085
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_ubsan_chrome&range=440242:440280

Minimized Testcase (607.86 Kb): https://cluster-fuzz.appspot.com/download/AMIfv94YQjoUhdzCLFWx2UpImVqrdjLlYHGtQzr8yxsV5tRRmXrVMktxKcsd3tawMFz_-LpvbS0_voLqAd1Eyac11rRtOLU8Rr3qrF59w0c8odAm-EHIiTO-Ehm-oDvjmzHmDSBH9kYhhvhWdKVShJc55b0Xyj3baxQFmJjW2TpFAdUQgcyqNR8?testcase_id=6706881386250240

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.

ClusterFuzz testcase 6706881386250240 is verified as fixed, so closing issue.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.