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Issue 676904 link

Starred by 2 users

Issue metadata

Status: Verified
Owner: ----
Closed: Oct 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



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Direct-leak in google_breakpad::MinidumpContext::Read

Project Member Reported by ClusterFuzz, Dec 24 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5556829423927296

Fuzzer: libfuzzer_minidump_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Direct-leak
Crash Address: 
Crash State:
  google_breakpad::MinidumpContext::Read
  google_breakpad::MinidumpThread::GetContext
  google_breakpad::MinidumpProcessor::Process
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=415984:416149

Minimized Testcase (3.51 Kb): https://cluster-fuzz.appspot.com/download/AMIfv94ajcaJrcQNqXmMD4z67rpo8Dyrdr_kiRQ9IEjQLVE_nbOVpnQDnfcVRm9GN-LzA17W0d1-bs4B_NQwFG0CeepeJUnETks5ajpxQdQaXAKsOdr-0O1O0gc0OBq6XZiXs15SzyKrjvtxKw8sqfL5LhGTsrTSGg?testcase_id=5556829423927296

Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.
 
Cc: msrchandra@chromium.org
Labels: Test-Predator-Wrong-CLs
Owner: wfh@chromium.org
Status: Assigned (was: Untriaged)
Find it did not provide any possible suspects.
Assigning to the concern owner from the CL --
https://chromium.googlesource.com/chromium/src/+log/0230527ec6f04133dcbeb488474c13e895157ea5..e4575053ef8633b2ea57ad4936e4e5d3ff42f36d?pretty=fuller

Suspecting Commit#
https://chromium.googlesource.com/chromium/src/+/dee978f1ee27b272aeebdc75cecc1ed4f8148eb6

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

Comment 2 by wfh@chromium.org, Jan 13 2017

Cc: mark@chromium.org wfh@chromium.org
Owner: ----
Status: Available (was: Assigned)
maybe Mark can look at this but I imagine it's low priority.

Comment 3 by mark@chromium.org, Jan 13 2017

We saw this before at  bug 643732 .

Despite what I said on that bug, I recall that I did take a quick glance and couldn’t find an immediate obvious leak, but the context-reading code is a little gross.
Project Member

Comment 4 by ClusterFuzz, Oct 4 2017

Labels: Test-Predator-AutoOwner
Owner: wfh@chromium.org
Status: Assigned (was: Available)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/dee978f1ee27b272aeebdc75cecc1ed4f8148eb6 (Add minidump fuzzer for breakpad.).

If this is incorrect, please remove the owner and apply the Test-Predator-Wrong-CLs label.
Owner: ----
Status: Available (was: Assigned)
Sorry for the reassignment. We weren't checking previous owners before assigning, but now we do. Shouldn't happen again.
Project Member

Comment 6 by ClusterFuzz, Oct 21 2017

ClusterFuzz has detected this issue as fixed in range 510446:510468.

Detailed report: https://clusterfuzz.com/testcase?key=5556829423927296

Fuzzer: libFuzzer_minidump_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Direct-leak
Crash Address: 
Crash State:
  google_breakpad::MinidumpContext::Read
  google_breakpad::MinidumpThread::GetContext
  google_breakpad::MinidumpProcessor::Process
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=415984:416149
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=510446:510468

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5556829423927296

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.
Project Member

Comment 7 by ClusterFuzz, Oct 21 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Available)
ClusterFuzz testcase 5556829423927296 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.
Labels: -Test-Predator-AutoOwner Test-Predator-Auto-Owner

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