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Issue 832575 link

Starred by 2 users

Issue metadata

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



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Null-dereference READ in blink::DocumentLifecycle::DisallowTransitionScope::DisallowTransitionScope

Project Member Reported by ClusterFuzz, Apr 13 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6128131254255616

Fuzzer: ifratric-browserfuzzer-v3
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000200
Crash State:
  blink::DocumentLifecycle::DisallowTransitionScope::DisallowTransitionScope
  blink::TextIteratorAlgorithm<blink::EditingAlgorithm<blink::FlatTreeTraversal> >
  blink::TextOffsetMapping::ComputeTextOffset
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=550102:550107

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6128131254255616

Issue filed automatically.

See https://github.com/google/clusterfuzz-tools for more information.
 
Project Member

Comment 1 by ClusterFuzz, Apr 13 2018

Components: Blink>DOM
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.

Comment 2 by fergal@chromium.org, Apr 16 2018

Status: Available (was: Untriaged)
Project Member

Comment 3 by ClusterFuzz, May 10 2018

ClusterFuzz has detected this issue as fixed in range 557408:557410.

Detailed report: https://clusterfuzz.com/testcase?key=6128131254255616

Fuzzer: ifratric-browserfuzzer-v3
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000200
Crash State:
  blink::DocumentLifecycle::DisallowTransitionScope::DisallowTransitionScope
  blink::TextIteratorAlgorithm<blink::EditingAlgorithm<blink::FlatTreeTraversal> >
  blink::TextOffsetMapping::ComputeTextOffset
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=550102:550107
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=557408:557410

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6128131254255616

See https://github.com/google/clusterfuzz-tools 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 10 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Available)
ClusterFuzz testcase 6128131254255616 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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