Assigning to the concern owner from Predator results --
Regression information is not available. The result is the blame information. 

Author: Nicolas Pena
Project: chromium-pdfium
Changelist: https://pdfium.googlesource.com/pdfium.git/+/ec3a9e27d9e37ef9074c0097481d4a9dfd57549f
Time: Tue May 02 10:45:35 2017 -0400
The CL last changed line 130 of file fx_gif.cpp, which is stack frame 0. 

Author: Dan Sinclair
Project: chromium-pdfium
Changelist: https://pdfium.googlesource.com/pdfium.git/+/764ec513eecbebd12781bcc96ce81ed5e736ee92
Time: Mon Mar 14 13:35:12 2016 -0400
The CL last changed line 526 of file fx_gif.cpp, which is stack frame 1. 

Author: Nicolas Pena
Project: chromium-pdfium
Changelist: https://pdfium.googlesource.com/pdfium.git/+/808828cb7b5539ab9a3f52b67ada6f26fa3c9d51
Time: Tue May 09 12:35:19 2017 -0400
The CL last changed line 67 of file ccodec_gifmodule.cpp, which is stack frame 2. 

Author: Dan Sinclair
Project: chromium-pdfium
Changelist: https://pdfium.googlesource.com/pdfium.git/+/764ec513eecbebd12781bcc96ce81ed5e736ee92
Time: Mon Mar 14 13:35:12 2016 -0400
The CL last changed line 1808 of file fx_codec_progress.cpp, which is stack frame 3. 

Author: dsinclair
Project: chromium-pdfium
Changelist: https://pdfium.googlesource.com/pdfium.git/+/5a5f251ce8646ec421aa9e35d8bbca71a984770a
Time: Mon Jun 06 11:52:30 2016 -0700
The CL last changed line 40 of file xfa_codec_fuzzer.h, which is stack frame 4.

Suspecting Commit#
https://pdfium.googlesource.com/pdfium.git/+/5a5f251ce8646ec421aa9e35d8bbca71a984770a

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

Rerunning because I think it's already fixed

ClusterFuzz has detected this issue as fixed in range 470825:470884.

Detailed report: https://clusterfuzz.com/testcase?key=5278142255333376

Fuzzer: afl_pdf_codec_gif_fuzzer
Job Type: afl_chrome_asan
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000000
Crash State:
  gif_decode_extension
  gif_get_frame
  CCodec_GifModule::LoadFrameInfo
  
Sanitizer: address (ASAN)

Fixed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=470825:470884

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5278142255333376


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 5278142255333376 is verified as fixed, so closing issue.

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

ClusterFuzz has detected this issue as fixed in range 470825:470884.

Detailed report: https://clusterfuzz.com/testcase?key=5278142255333376

Fuzzer: afl_pdf_codec_gif_fuzzer
Job Type: afl_chrome_asan
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000000
Crash State:
  gif_decode_extension
  gif_get_frame
  CCodec_GifModule::LoadFrameInfo
  
Sanitizer: address (ASAN)

Fixed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=470825:470884

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5278142255333376


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.