New issue
Advanced search Search tips
Note: Color blocks (like █ or █) mean that a user may not be available. Tooltip shows the reason.

Issue 722011 link

Starred by 1 user
Status: WontFix
Owner:
█ alokp@chromium.org
Last visit > 30 days ago
Closed: Jul 2017
Cc:
ivancic@google.com
█ ranjitkan@chromium.org
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug-Regression



Sign in to add a comment

Data race in pthread_mutex_lock

Project Member Reported by ClusterFuzz, May 13 2017 
Detailed report: https://clusterfuzz.com/testcase?key=6370294892855296

Fuzzer: tokenfuzz_pdf_curated
Job Type: linux_tsan_chrome_mp
Platform Id: linux

Crash Type: Data race ATOMIC READ 1
Crash Address: 0x7b0c00045c60
Crash State:
  pthread_mutex_lock
  pa_mutex_lock
  pa_xmalloc
  
Sanitizer: thread (TSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_tsan_chrome_mp&range=471546:471559

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6370294892855296


Additional requirements: Requires Gestures

Issue filed automatically.

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

Comment 1 by ranjitkan@chromium.org, Jun 9 2017

Cc: ranjitkan@chromium.org
Labels: -Type-Bug M-61 Test-Predator-Correct-CLs Type-Bug-Regression
Owner: alokp@chromium.org
Status: Assigned (was: Untriaged)
Predator generated the following result

Author: alokp
Project: chromium
Changelist: https://chromium.googlesource.com/chromium/src/+/2cbd4fcab300af5aa4ef76752673901d58da0f24
Time: Sat May 13 04:13:24 2017
Lines 44-49 of file audio_manager_linux.cc which potentially caused crash are changed in this cl (frame #3, "media::CreateAudioManager"). 

Lines 285-286 of file audio_manager.cc which potentially caused crash are changed in this cl (frame #4, "media::AudioManager::Create"). 

Lines 1774 of file browser_main_loop.cc which potentially caused crash are changed in this cl (frame #5, "content::BrowserMainLoop::CreateAudioManager"). 

Lines 44-49 of file audio_manager_linux.cc which potentially caused crash are changed in this cl (frame #3, "media::CreateAudioManager"). 

Lines 285-286 of file audio_manager.cc which potentially caused crash are changed in this cl (frame #4, "media::AudioManager::Create"). 

Lines 1774 of file browser_main_loop.cc which potentially caused crash are changed in this cl (frame #5, "content::BrowserMainLoop::CreateAudioManager").
Minimum distance from crash line to modified line: 0. (file: browser_main_loop.cc, crashed on: 1774, modified: 1774).

@alokp: Assigning to you, kindly take a look into it. Please help us to find an owner if crash is not caused with respect to your change.

Thanks.!
Project Member

Comment 2 by ClusterFuzz, Jul 9 2017

Status: WontFix (was: Assigned)
ClusterFuzz testcase 6370294892855296 is flaky and no longer reproduces, so closing issue.

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

Sign in to add a comment