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Issue metadata

Status: Verified
Owner:
Closed: Aug 9
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Null-dereference READ in v8::Context::Enter

Project Member Reported by ClusterFuzz, Jul 17

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6231957026111488

Fuzzer: lcamtuf_cross_fuzz
Job Type: linux_ubsan_vptr_chrome
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  v8::Context::Enter
  blink::V8ErrorCallback::handleEvent
  blink::V8ErrorCallback::InvokeAndReportException
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_chrome&range=574172:574173

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6231957026111488

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Jul 17

Components: Blink>Storage>FileSystem
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, Jul 17

Labels: Test-Predator-Auto-Owner
Owner: jsb...@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/37ca2d0776f9d68ed84a596fe525973a31ff6040 (Web Locks API: Enable in stable).

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.
Project Member

Comment 3 by ClusterFuzz, Aug 9

ClusterFuzz has detected this issue as fixed in range 581496:581497.

Detailed report: https://clusterfuzz.com/testcase?key=6231957026111488

Fuzzer: lcamtuf_cross_fuzz
Job Type: linux_ubsan_vptr_chrome
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  v8::Context::Enter
  blink::V8ErrorCallback::handleEvent
  blink::V8ErrorCallback::InvokeAndReportException
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_chrome&range=574172:574173
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_chrome&range=581496:581497

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6231957026111488

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, Aug 9

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6231957026111488 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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