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Issue 825472 link

Starred by 3 users

Issue metadata

Status: Verified
Owner:
Last visit 28 days ago
Closed: Apr 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Null-dereference READ in blink::EditingIgnoresContent

Project Member Reported by ClusterFuzz, Mar 24 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5257250810363904

Fuzzer: ifratric-browserfuzzer-v3
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::EditingIgnoresContent
  blink::PositionTemplate<blink::EditingAlgorithm<blink::NodeTraversal> >::FirstPo
  blink::TextDirection blink::DirectionOfEnclosingBlockOfAlgorithm<blink::EditingA
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=523880:523906

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5257250810363904

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Mar 24 2018

Components: Blink>Editing
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.
Cc: brajkumar@chromium.org
Labels: M-66 Test-Predator-Wrong
Owner: lushnikov@chromium.org
Status: Assigned (was: Untriaged)
Predator could not provide any possible suspects.

From the below CL observing some changes related to 'editing' , hence suspecting the same
https://chromium.googlesource.com/chromium/src/+log/5830b993a3529bf00e2149afc0c0b3d268d78d36..2b47df6d9d7f4cf3e5ba2a493b8a1e80aebeb3c4?pretty=fuller&n=10000

Suspect CL: https://chromium.googlesource.com/chromium/src/+/bfc75c0a27fff772ed4d96ef40dfd6f127ee29fa

lushnikov@ -- Could you please check whether this is caused with respect to your change, if not please help us in assigning it to the right owner.

Thanks!
Project Member

Comment 3 by ClusterFuzz, Apr 18 2018

ClusterFuzz has detected this issue as fixed in range 551573:551577.

Detailed report: https://clusterfuzz.com/testcase?key=5257250810363904

Fuzzer: ifratric-browserfuzzer-v3
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::EditingIgnoresContent
  blink::PositionTemplate<blink::EditingAlgorithm<blink::NodeTraversal> >::FirstPo
  blink::TextDirection blink::DirectionOfEnclosingBlockOfAlgorithm<blink::EditingA
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=523880:523906
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=551573:551577

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5257250810363904

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, Apr 18 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 5257250810363904 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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