Unable to provide possible suspect using Predator, CL and Code Search.
Could someone please look into the issue.

Thank You...

This is XFA related.

The following revision refers to this bug:
  https://pdfium.googlesource.com/pdfium/+/a97a660d47cd500a00f69ad429de0ca1551c7198

commit a97a660d47cd500a00f69ad429de0ca1551c7198
Author: Ryan Harrison <rharrison@chromium.org>
Date: Tue Jul 17 17:25:47 2018

Reserve space for result in ::FilterContents

This changes the implementation for the specific bug listed and
proactively fixes it in the other overrides. The general bug here is
that if you concat a WideString in a tight loop without first
reserving space, each call will cause an allocation size change and
memcpy. This is very expensive and causes ClusterFuzz cases to
timeout.

BUG= chromium:863295 

Change-Id: I6c1d900a31b98cd9ddcf91d1ec0f3973c9cdfa26
Reviewed-on: https://pdfium-review.googlesource.com/38110
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>

[modify] https://crrev.com/a97a660d47cd500a00f69ad429de0ca1551c7198/fxbarcode/oned/BC_OnedEAN8Writer.cpp
[modify] https://crrev.com/a97a660d47cd500a00f69ad429de0ca1551c7198/fxbarcode/oned/BC_OnedCodaBarWriter.cpp
[modify] https://crrev.com/a97a660d47cd500a00f69ad429de0ca1551c7198/fxbarcode/oned/BC_OnedUPCAWriter.cpp
[modify] https://crrev.com/a97a660d47cd500a00f69ad429de0ca1551c7198/fxbarcode/oned/BC_OnedCode39Writer.cpp
[modify] https://crrev.com/a97a660d47cd500a00f69ad429de0ca1551c7198/fxbarcode/oned/BC_OnedEAN13Writer.cpp

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/216214695b50b7bcb3cec2d6be7afd4d56db45a0

commit 216214695b50b7bcb3cec2d6be7afd4d56db45a0
Author: pdfium-chromium-autoroll <pdfium-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Date: Tue Jul 17 18:53:53 2018

Roll src/third_party/pdfium ff402c2c4ce8..a97a660d47cd (1 commits)

https://pdfium.googlesource.com/pdfium.git/+log/ff402c2c4ce8..a97a660d47cd


git log ff402c2c4ce8..a97a660d47cd --date=short --no-merges --format='%ad %ae %s'
2018-07-17 rharrison@chromium.org Reserve space for result in ::FilterContents


Created with:
  gclient setdep -r src/third_party/pdfium@a97a660d47cd

The AutoRoll server is located here: https://pdfium-roll.skia.org

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.



BUG= chromium:863295 
TBR=dsinclair@chromium.org

Change-Id: If9d901d30f2c836e6f849a5e960deb99710f4582
Reviewed-on: https://chromium-review.googlesource.com/1140534
Reviewed-by: pdfium-chromium-autoroll <pdfium-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: pdfium-chromium-autoroll <pdfium-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#575735}
[modify] https://crrev.com/216214695b50b7bcb3cec2d6be7afd4d56db45a0/DEPS

ClusterFuzz has detected this issue as fixed in range 575730:575738.

Detailed report: https://clusterfuzz.com/testcase?key=5215416625135616

Fuzzer: libFuzzer_pdf_cfx_barcode_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: Timeout (exceeds 25 secs)
Crash Address: 
Crash State:
  pdf_cfx_barcode_fuzzer
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=574744:574745
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=575730:575738

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5215416625135616

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.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 5215416625135616 is verified as fixed, so closing issue as verified.

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