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Issue metadata

Status: Duplicate
Merged: issue 904613
Owner: ----
Closed: Nov 14
Cc:
EstimatedDays: ----
NextAction: ----
OS: Windows
Pri: 1
Type: Bug



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Null-dereference READ in SkDiscardableMemory::Create

Project Member Reported by ClusterFuzz, Nov 14

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6288718950039552

Fuzzer: libFuzzer_skia_image_filter_deserialize_fuzzer
Job Type: windows_libfuzzer_chrome_asan
Platform Id: windows

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  SkDiscardableMemory::Create
  SkMipMap::Build
  SkMipMap::Build
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=windows_libfuzzer_chrome_asan&range=607281:607292

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6288718950039552

Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing_on_windows.md for more information.
 
Mergedinto: 904613
Status: Duplicate (was: Untriaged)
Same underlying bug in the fuzzer as  issue 904613 .
Project Member

Comment 2 by ClusterFuzz, Nov 19

ClusterFuzz has detected this issue as fixed in range 609334:609340.

Detailed report: https://clusterfuzz.com/testcase?key=6288718950039552

Fuzzer: libFuzzer_skia_image_filter_deserialize_fuzzer
Job Type: windows_libfuzzer_chrome_asan
Platform Id: windows

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  SkDiscardableMemory::Create
  SkMipMap::Build
  SkMipMap::Build
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=windows_libfuzzer_chrome_asan&range=607281:607292
Fixed: https://clusterfuzz.com/revisions?job=windows_libfuzzer_chrome_asan&range=609334:609340

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6288718950039552

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

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.
The documentation for reproducing bugs on Windows was moved to: https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md

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