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Starred by 2 users

Issue metadata

Status: Verified
Owner: ----
Closed: Oct 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Windows
Pri: 3
Type: Bug



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Null-dereference READ in blink::IsTabHTMLSpanElement

Project Member Reported by ClusterFuzz, Oct 6 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=4517094841647104

Fuzzer: miaubiz_css_fuzzer
Job Type: windows_asan_chrome_no_sandbox
Platform Id: windows

Crash Type: Null-dereference READ
Crash Address: 0x00000024
Crash State:
  blink::IsTabHTMLSpanElement
  blink::EditingStyle::Init
  blink::EditingStyle::Create
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=windows_asan_chrome_no_sandbox&range=506675:506699

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4517094841647104

Additional requirements: Requires Gestures

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Oct 6 2017

Labels: OS-Linux
Project Member

Comment 2 by ClusterFuzz, Oct 6 2017

Components: Blink>Editing
Labels: Test-Predator-AutoComponents
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, Oct 6 2017

Labels: Test-Predator-AutoOwner
Owner: yosin@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/52d55d36c78e4772e0e3499409dc6f6dcabde00e (Make InsertText command not to split SPAN element containing TAB character).

If this is incorrect, please remove the owner and apply the Test-Predator-Wrong-CLs label.

Comment 4 by yosin@chromium.org, Oct 10 2017

Components: -Blink>Editing Blink>Editing>Command
Labels: -Pri-1 Pri-3
Owner: ----
Status: Available (was: Assigned)
Lower to Pri-3 since it is caused by unusual HTML, e.g. nth-last-of-type with display: inline-flexbox
Project Member

Comment 5 by ClusterFuzz, Oct 12 2017

Labels: ClusterFuzz-Top-Crash ReleaseBlock-Beta M-63
Testcase 4517094841647104 is a top crash on ClusterFuzz for windows platform. Please prioritize fixing this crash.

Marking this crash as a Beta release blocker.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.

Comment 6 by ajha@chromium.org, Oct 13 2017

Cc: yosin@chromium.org
Per C#4 this seems to be caused by unusual HTML but as per CF this is top crash on ClusterFuzz for windows platform.

yosin@: Could you please review the blocker label added in C#5 and remove if this should not be blocking at all.

Cc'ing yosin@ for review of the blocker label.

Comment 7 by yosin@chromium.org, Oct 16 2017

Labels: -ReleaseBlock-Beta
Remove RB label per #c4, since this bug doesn't affect real world usage.
Project Member

Comment 8 by ClusterFuzz, Oct 24 2017

ClusterFuzz has detected this issue as fixed in range 510178:510722.

Detailed report: https://clusterfuzz.com/testcase?key=4517094841647104

Fuzzer: miaubiz_css_fuzzer
Job Type: windows_asan_chrome_no_sandbox
Platform Id: windows

Crash Type: Null-dereference READ
Crash Address: 0x00000024
Crash State:
  blink::IsTabHTMLSpanElement
  blink::EditingStyle::Init
  blink::EditingStyle::Create
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=windows_asan_chrome_no_sandbox&range=506675:506699
Fixed: https://clusterfuzz.com/revisions?job=windows_asan_chrome_no_sandbox&range=510178:510722

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4517094841647104

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 9 by ClusterFuzz, Oct 24 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Available)
ClusterFuzz testcase 4517094841647104 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.
Labels: -Test-Predator-AutoComponents Test-Predator-Auto-Components
Labels: -Test-Predator-AutoOwner Test-Predator-Auto-Owner

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