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Issue metadata

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



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Null-dereference READ in ash::BackdropController::UpdateBackdrop

Project Member Reported by ClusterFuzz, Apr 25 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5424478088331264

Fuzzer: inferno_webbot
Job Type: linux_asan_chrome_chromeos
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  ash::BackdropController::UpdateBackdrop
  aura::Window::OnStackingChanged
  aura::Window::StackChildRelativeTo
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_chrome_chromeos&range=553250:553259

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5424478088331264

Additional requirements: Requires Gestures

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Apr 25 2018

Components: UI>Shell>WindowManager
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 25 2018

Cc: minch@google.com
Labels: Test-Predator-Auto-CC
Automatically adding ccs based on suspected regression changelists:

Restore backdrop if dismissed app list. by minch@google.com - https://chromium.googlesource.com/chromium/src/+/7bf57266f44d4cf0133764abc6f3ff2a02945865

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label.
Project Member

Comment 3 by ClusterFuzz, May 2 2018

ClusterFuzz has detected this issue as fixed in range 555046:555052.

Detailed report: https://clusterfuzz.com/testcase?key=5424478088331264

Fuzzer: inferno_webbot
Job Type: linux_asan_chrome_chromeos
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  ash::BackdropController::UpdateBackdrop
  aura::Window::OnStackingChanged
  aura::Window::StackChildRelativeTo
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_chrome_chromeos&range=553250:553259
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_chrome_chromeos&range=555046:555052

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5424478088331264

Additional requirements: Requires Gestures

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 2 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Untriaged)
ClusterFuzz testcase 5424478088331264 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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