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Issue metadata

Status: Duplicate
Merged: issue 813526
Owner: ----
Closed: Mar 2018
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Bad-cast to blink::WebView from invalid vptr in test_runner::TestRunnerForSpecificView::Reset

Project Member Reported by ClusterFuzz, Mar 13 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5457650293407744

Fuzzer: inferno_layout_test_unmodified
Job Type: linux_ubsan_vptr_content_shell_drt
Platform Id: linux

Crash Type: Bad-cast
Crash Address: 0x06d1b1ab0280
Crash State:
  Bad-cast to blink::WebView from invalid vptr
  test_runner::TestRunnerForSpecificView::Reset
  test_runner::WebViewTestProxyBase::Reset
  
Sanitizer: undefined (UBSAN)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=542629:542630

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5457650293407744

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Mar 13 2018

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, Mar 13 2018

Labels: Test-Predator-Auto-Owner
Owner: weili@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/68aabd926591afe79a3aa464ebb3eba038295b73 (Identify PDF file being printed by checking URL).

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.

Comment 3 by weili@chromium.org, Mar 13 2018

Labels: Test-Predator-Wrong-CLs
Owner: ----
Status: Available (was: Assigned)
I don't think it was due to my CL as my change is only on the browser side. But this crash happens in the renderer. 
Project Member

Comment 4 by sheriffbot@chromium.org, Mar 13 2018

Labels: M-65
Project Member

Comment 5 by sheriffbot@chromium.org, Mar 13 2018

Labels: Pri-1

Comment 6 by est...@chromium.org, Mar 14 2018

ClusterFuzz seems a bit confused about this bug, plus it's not clear that it's a bug in production code (crash is in test code). I'll try to reproduce later tonight and see if I can figure out what's going on.

Comment 7 by est...@chromium.org, Mar 17 2018

Labels: -Type-Bug-Security -Restrict-View-SecurityTeam -Security_Impact-Stable -Security_Severity-High Type-Bug
Mergedinto: 813526
Status: Duplicate (was: Available)
I can't reproduce locally, but I suspect this is a duplicate (and not a security bug because it's test code on the call stack).
Project Member

Comment 8 by ClusterFuzz, Mar 27 2018

ClusterFuzz has detected this issue as fixed in range 545879:545880.

Detailed report: https://clusterfuzz.com/testcase?key=5457650293407744

Fuzzer: inferno_layout_test_unmodified
Job Type: linux_ubsan_vptr_content_shell_drt
Platform Id: linux

Crash Type: Bad-cast
Crash Address: 0x06d1b1ab0280
Crash State:
  Bad-cast to blink::WebView from invalid vptr
  test_runner::TestRunnerForSpecificView::Reset
  test_runner::WebViewTestProxyBase::Reset
  
Sanitizer: undefined (UBSAN)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=542629:542630
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=545879:545880

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5457650293407744

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.

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