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Issue 770443 link

Starred by 1 user
Status: Assigned
Owner:
malaykeshav@chromium.org
Cc:
pnangunoori@chromium.org
█ msrchandra@chromium.org
EstimatedDays: ----
NextAction: ----
OS: Windows
Pri: 1
Type: Bug



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Null-dereference in sk_sp<SkImageFilter>::sk_sp<SkImageFilter>

Project Member Reported by ClusterFuzz, Sep 30 2017 
Detailed report: https://clusterfuzz.com/testcase?key=6512887173742592

Fuzzer: noel-image-surku
Job Type: windows_syzyasan_chrome
Platform Id: windows

Crash Type: Null-dereference
Crash Address: 0x00000037
Crash State:
  sk_sp<SkImageFilter>::sk_sp<SkImageFilter>
  gfx::RenderTextHarfBuzz::DrawVisualText
  gfx::RenderText::Draw
  
Memory Tool: SYZYASAN

Regressed: https://clusterfuzz.com/revisions?job=windows_syzyasan_chrome&range=496069:496126

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6512887173742592

Additional requirements: Requires Gestures

Issue filed automatically.

See https://github.com/google/clusterfuzz-tools for more information.

Comment 1 by pnangunoori@chromium.org, Oct 3 2017

Cc: msrchandra@chromium.org pnangunoori@chromium.org
Labels: M-63 Test-Predator-Correct
Owner: malaykeshav@chromium.org
Status: Assigned (was: Untriaged)
Test Predator has given the following results:

Update ui::Layer subpixel offset computation logic to match Pixel Canvas by malaykeshav@chromium.org
Changelist touched lines near the crashed line in frame #7 chrome_dll!views::View::Paint+0x359 (distance = 658 lines away)
Changed files view.cc, view.h, view_unittest.cc, with the same CrashedDirectory(ui/views) as view.cc (in frame#7)
Touched files in stacktrace - view.cc
Changed files bridged_native_widget.mm, view.cc, view.h, view_unittest.cc, root_view.cc, root_view.h, with the same CrashedComponent(Internals>Views) as view.cc (in frame#7), textfield.cc (in frame#4, frame#5)

@malaykeshav -- Could you please look into this issue, kindly reassign if it has nothing to do with your changes.

Thank You.
►

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