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Issue metadata

Status: Assigned
Merged: issue 734334
Owner:
Last visit > 30 days ago
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug

Blocking:
issue 734334



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Null-dereference READ in content::WebURLLoaderImpl::LoadAsynchronously

Project Member Reported by ClusterFuzz, Dec 13

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6293100382912512

Fuzzer: libFuzzer_renderer_fuzzer
Fuzz target binary: renderer_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  content::WebURLLoaderImpl::LoadAsynchronously
  blink::ResourceLoader::StartWith
  blink::ResourceLoadScheduler::Run
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=550878:550879

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6293100382912512

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Dec 13

Components: Blink>Loader Internals>Core
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, Dec 13

Cc: aizatsky@chromium.org
Labels: ClusterFuzz-Auto-CC
Automatically adding ccs based on OWNERS file / target commit history.

If this is incorrect, please add ClusterFuzz-Wrong label.
Project Member

Comment 3 by ClusterFuzz, Dec 13

Labels: Test-Predator-Auto-Owner
Owner: jcivelli@google.com
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/916f33589c6e4656f25cb846cbb572191be4fb6a (Move replaying of redirects and response started to ResourceDispatcher).

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.
Mergedinto: 734334
Status: Duplicate (was: Assigned)
Cc: yhirano@chromium.org
Status: Assigned (was: Duplicate)
I'm re-opening this as it was found with an active fuzz target and looks totally legit.
Blocking: 734334
Project Member

Comment 7 by ClusterFuzz, Dec 14

ClusterFuzz has detected this issue as fixed in range 616459:616466.

Detailed report: https://clusterfuzz.com/testcase?key=6293100382912512

Fuzzer: libFuzzer_renderer_fuzzer
Fuzz target binary: renderer_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  content::WebURLLoaderImpl::LoadAsynchronously
  blink::ResourceLoader::StartWith
  blink::ResourceLoadScheduler::Run
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=550878:550879
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=616459:616466

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6293100382912512

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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