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Issue 839926 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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Null-dereference READ in SkTHashTable<SkTHashMap<unsigned int, sk_sp<SkTypeface>, SkGoodHash>::Pair, unsi

Project Member Reported by ClusterFuzz, May 4 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5458048861339648

Fuzzer: afl_paint_op_buffer_fuzzer
Job Type: afl_chrome_asan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x00000000000c
Crash State:
  SkTHashTable<SkTHashMap<unsigned int, sk_sp<SkTypeface>, SkGoodHash>::Pair, unsi
  SkTHashMap<unsigned int, sk_sp<SkTypeface>, SkGoodHash>::find
  SkStrikeClient::addTypeface
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=555636:555647

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5458048861339648

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

Components: Internals>Skia
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, 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 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/+/916fd2b4f197412cb985494d4a27c56b8dcd6ac6

commit 916fd2b4f197412cb985494d4a27c56b8dcd6ac6
Author: Khushal <khushalsagar@chromium.org>
Date: Mon May 07 20:33:49 2018

cc: Hook up SkStrikeClient in PaintOpBufferFuzzer.

R=enne@chromium.org

Bug:  839926 
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: Icc17213dfbb5c3f622081bb6671980f5d6221beb
Reviewed-on: https://chromium-review.googlesource.com/1048175
Reviewed-by: enne <enne@chromium.org>
Commit-Queue: Khushal <khushalsagar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#556556}
[modify] https://crrev.com/916fd2b4f197412cb985494d4a27c56b8dcd6ac6/cc/paint/paint_op_buffer_fuzzer.cc

Project Member

Comment 5 by ClusterFuzz, May 8 2018

ClusterFuzz has detected this issue as fixed in range 556555:556565.

Detailed report: https://clusterfuzz.com/testcase?key=5458048861339648

Fuzzer: afl_paint_op_buffer_fuzzer
Job Type: afl_chrome_asan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x00000000000c
Crash State:
  SkTHashTable<SkTHashMap<unsigned int, sk_sp<SkTypeface>, SkGoodHash>::Pair, unsi
  SkTHashMap<unsigned int, sk_sp<SkTypeface>, SkGoodHash>::find
  SkStrikeClient::addTypeface
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=555636:555647
Fixed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=556555:556565

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5458048861339648

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 5458048861339648 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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