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Issue metadata

Status: Verified
Owner: ----
Closed: May 2018
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Mac
Pri: 1
Type: Bug



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Null-dereference READ in SkDiscardableMemory::Create

Project Member Reported by ClusterFuzz, Apr 19 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6358872667979776

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  SkDiscardableMemory::Create
  SkBitmapCache::Alloc
  SkSpecialImage_Gpu::onGetROPixels
  
Sanitizer: memory (MSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=539324:539341

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6358872667979776

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Apr 19 2018

Components: Internals>Skia
Labels: Test-Predator-Auto-Components
Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.
Project Member

Comment 2 by ClusterFuzz, Apr 20 2018

Labels: OS-Mac
Project Member

Comment 3 by ClusterFuzz, May 3 2018

ClusterFuzz has detected this issue as fixed in range 555645:555651.

Detailed report: https://clusterfuzz.com/testcase?key=6358872667979776

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  SkDiscardableMemory::Create
  SkBitmapCache::Alloc
  SkSpecialImage_Gpu::onGetROPixels
  
Sanitizer: memory (MSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=539324:539341
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=555645:555651

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6358872667979776

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 4 by ClusterFuzz, May 3 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Untriaged)
ClusterFuzz testcase 6358872667979776 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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