This bug looks similar to Bug Id -- 693507.
@mmoroz -- Could you please look into the issue, kindly re-assign if this is not related to your changes.
Thank You.

ClusterFuzz is analyzing your testcase. Developers can follow the progress at https://cluster-fuzz.appspot.com/testcase?key=4885014706913280

Let's see if it reproduces with ASan.

After the recent commits, this input should not be particularly painful. (I'm not sure what Chromium has picked up so far.)

We are 4 commits behind ToT (https://chromium.googlesource.com/external/github.com/google/re2.git/+/596d73e6084a88c5394724978b10680dc929d197).

Looks like I need to do another update :)

https://codereview.chromium.org/2707673002/

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7d820c7251c04d0ecfb7e587c14ec6891aa8955a

commit 7d820c7251c04d0ecfb7e587c14ec6891aa8955a
Author: mmoroz <mmoroz@chromium.org>
Date: Sat Feb 18 19:55:36 2017

Roll re2 596d73e..193486d and update OWNERS.

https://chromium.googlesource.com/external/github.com/google/re2.git/+log/596d73e..193486d

R=inferno@chromiu.org, tfarina@chromium.org, thakis@chromium.org
BUG= 693507 

Review-Url: https://codereview.chromium.org/2707673002
Cr-Commit-Position: refs/heads/master@{#451489}

[modify] https://crrev.com/7d820c7251c04d0ecfb7e587c14ec6891aa8955a/DEPS
[modify] https://crrev.com/7d820c7251c04d0ecfb7e587c14ec6891aa8955a/third_party/re2/OWNERS
[modify] https://crrev.com/7d820c7251c04d0ecfb7e587c14ec6891aa8955a/third_party/re2/README.chromium

ClusterFuzz has detected this issue as fixed in range 451476:451489.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5744734686674944

Fuzzer: libfuzzer_third_party_re2_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Timeout (exceeds 25 secs)
Crash Address: 
Crash State:
  third_party_re2_fuzzer
  
Sanitizer: memory (MSAN)

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=450349:450377
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=451476:451489

Reproducer Testcase: https://cluster-fuzz.appspot.com/download/AMIfv94BKH3FKyifMgQeUJwn3N0nO5QCtPNUFX1yN8i_wvpqJqrAed4d8e7naq9-qQbGGyET1pbL5oXmUQwSP_VWSFA-_oCQs7AAnxd89i1Kf8wB_tFkSpG2BkwFRgbN7Ga3jWQ0YWH94l7y23Lp3GT8HJAuHbRtfJyVYqApR0Evnc14LLb5QvilJwy_SNQ79vdhYGB284DWVtUzOe5rqals8JpBvUaK7rAqVPDsrhzNqSaMtjldaLC062FhfgL2jxPAUpWgJ4r61stE_XovOrC5_UKrLk1arIHTKfkR2dc3lka-DfWppPCT1mkpIz35KkFruMAtzZvDvo7OJZrx2PTRijPwwmpTuXaYROKRd5mpxKd3gOSQd_w4UntB6SKfNOV3fLJ4p9pQP_dH8dOx80kWbC4bq85WkA?testcase_id=5744734686674944


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 5744734686674944 is verified as fixed, so closing issue.

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