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Issue 917695 link

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Issue metadata

Status: Verified
Owner:
Closed: Jan 9
Components:
EstimatedDays: ----
NextAction: ----
OS: Chrome
Pri: 1
Type: Bug


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Null-dereference READ in ash::ShelfLayoutManager::UpdateBoundsAndOpacity

Project Member Reported by ClusterFuzz, Dec 24

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5696374695526400

Fuzzer: webDEViL_webgl
Job Type: linux_asan_chrome_chromeos
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000048
Crash State:
  ash::ShelfLayoutManager::UpdateBoundsAndOpacity
  ash::ShelfLayoutManager::SetState
  ash::ShelfLayoutManager::UpdateVisibilityState
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_chrome_chromeos&range=587961:587962

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5696374695526400

Additional requirements: Requires Gestures

Issue filed automatically.

See https://github.com/google/clusterfuzz-tools for instructions to reproduce this bug locally.
 
Project Member

Comment 1 by ClusterFuzz, Dec 24

Components: UI>Shell>Shelf
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 24

Labels: Test-Predator-Auto-Owner
Owner: elkurin@google.com
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/aeafd48ed69c11f1903e132ffca0f37f87f14258 (Revert "Revert "Remove unneeded list from event_stream_logger.js"").

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label. If you aren't the correct owner for this issue, please unassign yourself as soon as possible so it can be re-triaged.
Labels: M-73
Owner: minch@chromium.org
Comment #2 and automatically linked CL don't seem very relevant to this bug :-) Too bad the stack trace doesn't have a line number or mention of which pointer is null.
Project Member

Comment 5 by ClusterFuzz, Jan 9

ClusterFuzz has detected this issue as fixed in range 621068:621069.

Detailed report: https://clusterfuzz.com/testcase?key=5696374695526400

Fuzzer: webDEViL_webgl
Job Type: linux_asan_chrome_chromeos
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000048
Crash State:
  ash::ShelfLayoutManager::UpdateBoundsAndOpacity
  ash::ShelfLayoutManager::SetState
  ash::ShelfLayoutManager::UpdateVisibilityState
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_chrome_chromeos&range=587961:587962
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_chrome_chromeos&range=621068:621069

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5696374695526400

Additional requirements: Requires Gestures

See https://github.com/google/clusterfuzz-tools for instructions to reproduce this bug locally.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.
Project Member

Comment 6 by ClusterFuzz, Jan 9

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 5696374695526400 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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