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Issue 724834 link

Starred by 1 user
Status: WontFix
Owner:
█ msrchandra@chromium.org
Last visit > 30 days ago
Closed: Jun 2017
Cc:
█ msrchandra@chromium.org
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Null-dereference in base::flat_map<std::__1::basic_string<char, std::__1::char_traits<char>, std::__

Project Member Reported by ClusterFuzz, May 21 2017 
Detailed report: https://clusterfuzz.com/testcase?key=6246831930736640

Fuzzer: inferno_layout_test_unmodified
Job Type: linux_asan_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference
Crash Address: 0x0000000004c0
Crash State:
  base::flat_map<std::__1::basic_string<char, std::__1::char_traits<char>, std::__
  base::DictionaryValue::MergeDictionary
  content::BlinkTestController::OnLayoutTestRuntimeFlagsChanged
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=473217:473261

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6246831930736640


Issue filed automatically.

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.

Comment 1 by msrchandra@chromium.org, May 23 2017

Cc: msrchandra@chromium.org
Labels: M-60 Test-Predator-Wrong
Owner: jdoerrie@chromium.org
Status: Assigned (was: Untriaged)
Predator and CL did not provide any possible suspects.
Using Code Search for the file, "flat_map.h" assigning to the concern owner.
Suspecting Commit#
https://chromium.googlesource.com/chromium/src/+/154dc49655238f0fc9928763bcf47930823a8e02

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

Comment 2 by jdoerrie@chromium.org, May 29 2017

Owner: msrchandra@chromium.org
I'm failing to reproduce this locally, also r473148 is unrelated to this crash. The method I introduced currently has no consumers except tests: https://codesearch.chromium.org/chromium/src/base/containers/flat_tree.h?l=216

As I am also unable to find a culprit, I am re-assigning to you, @msrchandra.
Project Member

Comment 3 by ClusterFuzz, Jun 28 2017

Status: WontFix (was: Assigned)
ClusterFuzz testcase 6246831930736640 is flaky and no longer reproduces, so closing issue.

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