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Issue 634151 link

Starred by 2 users

Issue metadata

Status: Verified
Owner:
Last visit > 30 days ago
Closed: Aug 2016
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Crash in segment

Project Member Reported by ClusterFuzz, Aug 3 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4778837642838016

Fuzzer: libfuzzer_skia_pathop_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000000
Crash State:
  segment
  containsCoincidence
  SkOpSpan::insertCoincidence
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=409276:409365

Minimized Testcase (0.43 Kb): https://cluster-fuzz.appspot.com/download/AMIfv96NVDmszwYUMlaZHdQ7afw_LnmLBGWaH5yrAe6GoFVYT42k34Nj2tOVcxJoDX85qSs7avY4Lf8c-lR0-AUuNZRR4xjQ4t4P7EOvt49Hrjg4WXz_xEk4a4txC8KKp2JpFSMfhs8f0kaWdmOGMNFLbEpw1oS5Tg?testcase_id=4778837642838016

Filer: mummareddy

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.
 
Components: Internals>Skia
Labels: M-54 Te-Logged
Owner: caryclark@chromium.org
Status: Assigned (was: Untriaged)

No CL in the regression range changes the crashed files. The result is the blame information.

Author: caryclark
Project: chromium-skia
Changelist: https://chromium.googlesource.com/skia.git/+/54359294a7c9dc54802d512a5d891a35c1663392
Time: Thu Mar 26 14:52:43 2015
The CL last changed line 302 of file SkOpSpan.h, which is stack frame 0.

Author: caryclark
Project: chromium-skia
Changelist: https://chromium.googlesource.com/skia.git/+/54359294a7c9dc54802d512a5d891a35c1663392
Time: Thu Mar 26 14:52:43 2015
The CL last changed line 361 of file SkOpSpan.cpp, which is stack frame 1.

Author: caryclark
Project: chromium-skia
Changelist: https://chromium.googlesource.com/skia.git/+/55888e44171ffd48b591d19256884a969fe4da17
Time: Mon Jul 18 17:01:36 2016
The CL last changed line 384 of file SkOpSpan.cpp, which is stack frame 2.

Author: caryclark
Project: chromium-skia
Changelist: https://chromium.googlesource.com/skia.git/+/55888e44171ffd48b591d19256884a969fe4da17
Time: Mon Jul 18 17:01:36 2016
The CL last changed line 1382 of file SkOpCoincidence.cpp, which is stack frame 3.

Author: caryclark
Project: chromium-skia
Changelist: https://chromium.googlesource.com/skia.git/+/5c5cfe24efe4c728e787447dabffe345080d1fb9
Time: Tue Apr 05 14:28:48 2016
The CL last changed line 522 of file SkPathOpsCommon.cpp, which is stack frame 4.

Author: caryclark
Project: chromium-skia
Changelist: https://chromium.googlesource.com/skia.git/+/55888e44171ffd48b591d19256884a969fe4da17
Time: Mon Jul 18 17:01:36 2016
The CL last changed line 312 of file SkPathOpsOp.cpp, which is stack frame 5.

Author: caryclark
Project: chromium-skia
Changelist: https://chromium.googlesource.com/skia.git/+/45fa447460f70ec21d22cf4e1531490acfd3c578
Time: Fri Jan 16 15:04:10 2015
The CL last changed line 152 of file SkOpBuilder.cpp, which is stack frame 6.

Suspected Project: chromium-skia
Suspected Component: Internals>Skia
Cc: caryclark@chromium.org
Owner: caryclark@google.com
Project Member

Comment 3 by ClusterFuzz, Aug 9 2016

ClusterFuzz has detected this issue as fixed in range 410317:410489.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4778837642838016

Fuzzer: libfuzzer_skia_pathop_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000000
Crash State:
  segment
  containsCoincidence
  SkOpSpan::insertCoincidence
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=409276:409365
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=410317:410489

Minimized Testcase (0.43 Kb): https://cluster-fuzz.appspot.com/download/AMIfv96NVDmszwYUMlaZHdQ7afw_LnmLBGWaH5yrAe6GoFVYT42k34Nj2tOVcxJoDX85qSs7avY4Lf8c-lR0-AUuNZRR4xjQ4t4P7EOvt49Hrjg4WXz_xEk4a4txC8KKp2JpFSMfhs8f0kaWdmOGMNFLbEpw1oS5Tg?testcase_id=4778837642838016

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 4 by ClusterFuzz, Aug 9 2016

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

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

Comment 5 by sheriffbot@chromium.org, Nov 22 2016

Labels: -Restrict-View-EditIssue
Removing EditIssue view restrictions from ClusterFuzz filed bugs. If you believe that this issue should still be restricted, please reapply the label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

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