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Issue metadata

Status: Verified
Owner:
Closed: Nov 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: Mac
Pri: 1
Type: Bug



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Null-dereference READ in _platform_memmove$VARIANT$Nehalem

Project Member Reported by ClusterFuzz, Nov 11 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6499607822729216

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: mac_libfuzzer_chrome_asan
Platform Id: mac

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  _platform_memmove$VARIANT$Nehalem
  SkReadBuffer::readRect
  SkTextBlob::MakeFromBuffer
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=mac_libfuzzer_chrome_asan&range=515012:515091

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6499607822729216

Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.
 
Project Member

Comment 1 by ClusterFuzz, Nov 11 2017

Labels: Test-Predator-Auto-Owner
Owner: vmp...@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/06970f10e5aab4e7b49196a335f9fbca1df5fa16 (Reland "oop: Implement linux oop fonts support.").

If this is incorrect, please remove the owner and apply the Test-Predator-Wrong-CLs label.
Project Member

Comment 2 by ClusterFuzz, Nov 13 2017

ClusterFuzz has detected this issue as fixed in range 515858:515862.

Detailed report: https://clusterfuzz.com/testcase?key=6499607822729216

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: mac_libfuzzer_chrome_asan
Platform Id: mac

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  _platform_memmove$VARIANT$Nehalem
  SkReadBuffer::readRect
  SkTextBlob::MakeFromBuffer
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=mac_libfuzzer_chrome_asan&range=515012:515091
Fixed: https://clusterfuzz.com/revisions?job=mac_libfuzzer_chrome_asan&range=515858:515862

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6499607822729216

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.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 3 by ClusterFuzz, Nov 13 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6499607822729216 is verified as fixed, so closing issue as verified.

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

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