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Issue metadata

Status: Verified
Owner:
Closed: Dec 2017
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Null-dereference READ in sk_sp<SkString::Rec>::get

Project Member Reported by ClusterFuzz, Dec 7 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6698101808300032

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  sk_sp<SkString::Rec>::get
  =<SkString::Rec, SkString::Rec>
  SkString::operator=
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=522260:522296

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6698101808300032

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Dec 7 2017

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, Dec 7 2017

Labels: Test-Predator-Auto-Owner
Owner: reed@google.com
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://skia.googlesource.com/skia/+/fadbfcd4aba676d44dfb08de1a83143a1c63b95c (upgrade SkReadBuffer to always validate).

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

Comment 3 by ClusterFuzz, Dec 8 2017

ClusterFuzz has detected this issue as fixed in range 522504:522639.

Detailed report: https://clusterfuzz.com/testcase?key=6698101808300032

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  sk_sp<SkString::Rec>::get
  =<SkString::Rec, SkString::Rec>
  SkString::operator=
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=522260:522296
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=522504:522639

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6698101808300032

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, Dec 8 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6698101808300032 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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