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Issue metadata

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



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CHECK failure: pending_start_update_callback_.is_null() && pending_swap_cache_callback_.is_null

Project Member Reported by ClusterFuzz, Nov 8

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6217369711804416

Fuzzer: libFuzzer_appcache_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  pending_start_update_callback_.is_null() && pending_swap_cache_callback_.is_null
  content::AppCacheHost::StartUpdateWithCallback
  content::AppCacheBackendImpl::StartUpdateWithCallback
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=605707:605715

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6217369711804416

Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.
 
Project Member

Comment 1 by ClusterFuzz, Nov 8

Components: Blink>Storage>AppCache
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, Nov 8

Cc: mmoroz@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, Nov 8

Labels: Test-Predator-Auto-Owner
Owner: mmoroz@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/f83007304ba201e3a0ee9eaf198d369aa48f6090 (Add appcache_fuzzer).

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.
Cc: nedwilli...@gmail.com jsb...@chromium.org
Owner: pwnall@chromium.org
Project Member

Comment 5 by ClusterFuzz, Dec 1

Labels: -Reproducible Unreproducible
ClusterFuzz testcase 6217369711804416 appears to be flaky, updating reproducibility label.
Labels: -Unreproducible Reproducible
Please ignore the last comment about testcase being unreproducible. The testcase is still reproducible. This happened due to a code refactoring on ClusterFuzz side, and the underlying root cause is now fixed. Resetting the label back to Reproducible. Sorry about the inconvenience caused from these incorrect notifications.
Project Member

Comment 7 by ClusterFuzz, Jan 9

ClusterFuzz has detected this issue as fixed in range 621021:621022.

Detailed report: https://clusterfuzz.com/testcase?key=6217369711804416

Fuzzer: libFuzzer_appcache_fuzzer
Fuzz target binary: appcache_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  pending_start_update_callback_.is_null() && pending_swap_cache_callback_.is_null
  content::AppCacheHost::StartUpdateWithCallback
  content::AppCacheBackendImpl::StartUpdateWithCallback
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=605707:605715
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=621021:621022

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6217369711804416

See https://github.com/google/clusterfuzz-tools for instructions to reproduce this bug locally.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.
Project Member

Comment 8 by ClusterFuzz, Jan 9

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6217369711804416 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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