Assigning to the concern owner from Find it results --
The result is a list of CLs that change the crashed files. 

Author: drott
Project: chromium
Changelist: https://chromium.googlesource.com/chromium/src/+/e58743c4354ba98a29907e630d616da3053ccf53
Time: Thu Jul 21 15:39:22 2016
Files hb-buffer.cc, hb-ot-layout-gsubgpos-private.hh are changed in this cl (and is part of stack frame #4, "hb_buffer_t::move_to")
Minimum distance from crash line to modified line: 13. (file: hb-buffer.cc, crashed on: 422, modified: 435).

@drott -- Could you please look into the issue, kindly re-assign if this is not related to your changes.
Thank You.

ClusterFuzz has detected this issue as fixed in range 441144:441192.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6421695994003456

Fuzzer: libfuzzer_harfbuzz_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: ASSERT
Crash Address: 
Crash State:
  i <= out_len + (len - idx)
  hb_buffer_t::move_to
  OT::apply_lookup
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan_debug&range=406810:406928
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan_debug&range=441144:441192

Minimized Testcase (0.96 Kb): https://cluster-fuzz.appspot.com/download/AMIfv94ycdDkHrnSVaPS09C1fgfIZQAJ3FuTOjih0ROAgoULzff7ySoBOnFkwWJTqkxgD9V90Jux63-veJO1LPnB4XcQKZ-Byc4Nzj7lFWHTFNfkMCnw6s6Yp3z-1BwOE4kGjxnjPT6Y5DryYTcvggRFfHXVHIENFg?testcase_id=6421695994003456

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md 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 6421695994003456 is verified as fixed, so closing issue.

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