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Issue 749017 link

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Issue metadata

Status: Verified
Owner:
Closed: Jul 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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CHECK failure: false in paint_op_buffer.cc

Project Member Reported by ClusterFuzz, Jul 26 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=4932084467761152

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  false in paint_op_buffer.cc
  base::debug::DebugBreak
  cc::DrawRecordOp::Deserialize
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=489446:489528

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4932084467761152


Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.
 
Cc: msrchandra@chromium.org
Labels: M-62 Test-Predator-Wrong
Owner: enne@chromium.org
Status: Assigned (was: Untriaged)
Predator did not provide any possible suspects.
Assigning to concern owner from CL --
https://chromium.googlesource.com/chromium/src/+log/f2e80a787c5d321d867c38e7d317ab62b1fe8182..cc048f893dac3da0376abf7adc781b0452691a0d?pretty=fuller

Suspecting Commit#
https://chromium.googlesource.com/chromium/src/+/23681aaf9e05a6db8f10f072f0db8c03e9334e6f

enne -- Could you please look into the issue, kindly re-assign if this is not related to your changes.
Thank You.
Project Member

Comment 2 by bugdroid1@chromium.org, Jul 26 2017

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/cc69a141bdfbc43f09ee54459f4a2ae740991197

commit cc69a141bdfbc43f09ee54459f4a2ae740991197
Author: Adrienne Walker <enne@chromium.org>
Date: Wed Jul 26 20:43:04 2017

Make DrawRecordOp::Deserialize a silent failure

Found by the fuzzer.  This should just silently fail instead of
asserting.

Bug:  749017 
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel
Change-Id: Ic34374cf12e2c5c9cdfc2e2e9de281e12d760ae2
Reviewed-on: https://chromium-review.googlesource.com/587248
Commit-Queue: enne <enne@chromium.org>
Commit-Queue: Vladimir Levin <vmpstr@chromium.org>
Reviewed-by: Vladimir Levin <vmpstr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#489746}
[modify] https://crrev.com/cc69a141bdfbc43f09ee54459f4a2ae740991197/cc/paint/paint_op_buffer.cc

Project Member

Comment 3 by ClusterFuzz, Jul 27 2017

ClusterFuzz has detected this issue as fixed in range 489690:489773.

Detailed report: https://clusterfuzz.com/testcase?key=4932084467761152

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  false in paint_op_buffer.cc
  base::debug::DebugBreak
  cc::DrawRecordOp::Deserialize
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=489446:489528
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=489690:489773

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4932084467761152


See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.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 4 by ClusterFuzz, Jul 27 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 4932084467761152 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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