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Issue 863345 link

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Issue metadata

Status: Verified
Owner:
Last visit > 30 days ago
Closed: Jul 25
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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CHECK failure: task.delay > TimeDelta() in task_queue_impl.cc

Project Member Reported by ClusterFuzz, Jul 13

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5762852644978688

Fuzzer: libFuzzer_sequence_manager_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  task.delay > TimeDelta() in task_queue_impl.cc
  base::sequence_manager::internal::TaskQueueImpl::PostDelayedTaskImpl
  base::sequence_manager::internal::TaskQueueImpl::PostDelayedTask
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=573962:573967

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5762852644978688

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Jul 13

Components: Internals>TaskScheduler
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 13

Cc: farahcharab@google.com
Labels: ClusterFuzz-Auto-CC
Automatically adding ccs based on OWNERS file / target commit history.

If this is incorrect, please add ClusterFuzz-Wrong label.
Cc: kkaluri@chromium.org
farahcharab@ Could you please look into this issue...
Labels: Test-Predator-Wrong-CLs M-69
Owner: kraynov@chromium.org
Status: Assigned (was: Untriaged)
Predator and CL could not provide any possible suspects.

Using Code Search for the file, "task_queue_impl.cc" suspecting the below Cl might have caused this issue

Suspect CL: https://chromium.googlesource.com/chromium/src/+/1e2e5567dbb47ebc42288946343d91a6fb79d332

kraynov@ -- Could you please look into this issue.

Thanks!

Cc: altimin@chromium.org
Components: -Internals>TaskScheduler Blink>Scheduling
Owner: farahcharab@chromium.org
This fuzzer is under development and it seems that it generates tests which overflow the time.
Project Member

Comment 6 by bugdroid1@chromium.org, Jul 25

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8dfce5943f3dd91938a2e4bf2dd1d945495d0533

commit 8dfce5943f3dd91938a2e4bf2dd1d945495d0533
Author: Farah Charab <farahcharab@google.com>
Date: Wed Jul 25 14:08:52 2018

SQM Fuzzer: Fix CHECK failure: task.delay > TimeDelta().

Sequence manager fuzzer test is causing an overflow when posting
tasks with big delays and durations. This patch fixes that.

Bug:  863345 

Change-Id: Ie2709c4fe2eff9d668946de7fb33f10812eb0262
Reviewed-on: https://chromium-review.googlesource.com/1146928
Reviewed-by: Alexander Timin <altimin@chromium.org>
Commit-Queue: Farah Charab <farahcharab@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577869}
[modify] https://crrev.com/8dfce5943f3dd91938a2e4bf2dd1d945495d0533/third_party/blink/renderer/platform/scheduler/base/proto/sequence_manager_test_description.proto

Status: Fixed (was: Assigned)
Project Member

Comment 8 by ClusterFuzz, Jul 26

ClusterFuzz has detected this issue as fixed in range 577868:577869.

Detailed report: https://clusterfuzz.com/testcase?key=5762852644978688

Fuzzer: libFuzzer_sequence_manager_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  task.delay > TimeDelta() in task_queue_impl.cc
  base::sequence_manager::internal::TaskQueueImpl::PostDelayedTaskImpl
  base::sequence_manager::internal::TaskQueueImpl::PostDelayedTask
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=573962:573967
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=577868:577869

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5762852644978688

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md 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, Jul 26

Labels: ClusterFuzz-Verified
Status: Verified (was: Fixed)
ClusterFuzz testcase 5762852644978688 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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