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Issue 839711 link

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Issue metadata

Status: Verified
Owner:
Closed: May 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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CHECK failure: SkIsAlign4(reinterpret_cast<uintptr_t>(memory_)) in paint_op_reader.cc

Project Member Reported by ClusterFuzz, May 4 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5441779860766720

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  SkIsAlign4(reinterpret_cast<uintptr_t>(memory_)) in paint_op_reader.cc
  void cc::PaintOpReader::ReadFlattenable<SkPathEffect>
  cc::PaintOpReader::Read
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=555638:555648

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5441779860766720

Issue filed automatically.

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

Comment 1 by ClusterFuzz, May 4 2018

Cc: enne@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 2 by ClusterFuzz, May 4 2018

Components: Internals>Compositing
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 3 by ClusterFuzz, May 4 2018

Labels: Test-Predator-Auto-Owner
Owner: khushals...@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/a8d50641199fe8b3045a4615d877d7c341bf7724 (oop: Intergrate skia font remoting for OOP raster.).

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.
Project Member

Comment 4 by bugdroid1@chromium.org, May 7 2018

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7cc36babda652c7d29d1a6762279814f384a4b54

commit 7cc36babda652c7d29d1a6762279814f384a4b54
Author: Khushal <khushalsagar@chromium.org>
Date: Mon May 07 23:08:51 2018

cc: Ensure memory alignment for flattenable deserialization.

R=enne@chromium.org

Bug:  839711 
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: Ib6e45db4752533219a9dbabb82187f4422afd697
Reviewed-on: https://chromium-review.googlesource.com/1048127
Reviewed-by: enne <enne@chromium.org>
Commit-Queue: Khushal <khushalsagar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#556602}
[modify] https://crrev.com/7cc36babda652c7d29d1a6762279814f384a4b54/cc/paint/paint_op_reader.cc
[modify] https://crrev.com/7cc36babda652c7d29d1a6762279814f384a4b54/cc/paint/paint_op_writer.cc

Project Member

Comment 5 by ClusterFuzz, May 8 2018

ClusterFuzz has detected this issue as fixed in range 556585:556604.

Detailed report: https://clusterfuzz.com/testcase?key=5441779860766720

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  SkIsAlign4(reinterpret_cast<uintptr_t>(memory_)) in paint_op_reader.cc
  void cc::PaintOpReader::ReadFlattenable<SkPathEffect>
  cc::PaintOpReader::Read
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=555638:555648
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=556585:556604

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5441779860766720

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 6 by ClusterFuzz, May 8 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 5441779860766720 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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