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Issue metadata

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



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Null-dereference READ in blink::MouseEventManager::TryStartDrag

Project Member Reported by ClusterFuzz, May 26 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5890213919064064

Fuzzer: ochang_domfuzzer
Job Type: linux_asan_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000088
Crash State:
  blink::MouseEventManager::TryStartDrag
  blink::MouseEventManager::HandleDrag
  blink::MouseEventManager::HandleDragDropIfPossible
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=527199:527221

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5890213919064064

Issue filed automatically.

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

Comment 1 by ClusterFuzz, May 26 2018

Labels: OS-Mac
Project Member

Comment 2 by ClusterFuzz, May 26 2018

Components: Blink
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 3 by ClusterFuzz, May 26 2018

Cc: drott@chromium.org l...@chromium.org caseq@chromium.org
Labels: Test-Predator-Auto-CC
Automatically adding ccs based on suspected regression changelists:

DevTools: ignore hash in url when searching for associated uiSourceCode by luoe@chromium.org - https://chromium.googlesource.com/chromium/src/+/3b46beb71bae6552e11b09ccba1b0b61ed9709e6

DevTools: deflake interception auth tests by caseq@chromium.org - https://chromium.googlesource.com/chromium/src/+/b387ae77db90142d2bddf9c1aa45cd258e4a6689

Add Lohit Gumurkhi, Garuda to the list of GCS synced linux fonts by drott@chromium.org - https://chromium.googlesource.com/chromium/src/+/79e55b710feeee1d464b50d5ddabb70901cbdff8

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

Comment 4 by e...@chromium.org, May 29 2018

Components: -Blink Blink>Input
drott@/ luoe@/ caseq@chromium.org -- Could you please take a look into this issue.

Thanks in advance!
Project Member

Comment 6 by ClusterFuzz, May 31 2018

ClusterFuzz has detected this issue as fixed in range 562952:562953.

Detailed report: https://clusterfuzz.com/testcase?key=5890213919064064

Fuzzer: ochang_domfuzzer
Job Type: linux_asan_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000088
Crash State:
  blink::MouseEventManager::TryStartDrag
  blink::MouseEventManager::HandleDrag
  blink::MouseEventManager::HandleDragDropIfPossible
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=527199:527221
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=562952:562953

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5890213919064064

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 7 by ClusterFuzz, May 31 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Untriaged)
ClusterFuzz testcase 5890213919064064 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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