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Issue 890598 link

Starred by 3 users

Issue metadata

Status: Assigned
Owner:
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 3
Type: Bug



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CHECK failure: layout_snapped_paint_offset == snapped_paint_offset || subpixel_accumulation_may

Project Member Reported by ClusterFuzz, Sep 30

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5654524256321536

Fuzzer: ifratric-browserfuzzer-v3
Job Type: linux_debug_chrome
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  layout_snapped_paint_offset == snapped_paint_offset || subpixel_accumulation_may
  blink::CompositingLayerPropertyUpdater::Update
  blink::PrePaintTreeWalk::WalkInternal
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_debug_chrome&range=590577:590578

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5654524256321536

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Sep 30

Components: Blink>Compositing Blink>Paint
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, Sep 30

Labels: Test-Predator-Auto-Owner
Owner: trchen@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/8661a7c51be77ca3e6a154e7fbade0b799eb6d9f ([Blink/BGPT+SPv2] Implement sticky position as transform node).

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.
Owner: wangxianzhu@chromium.org
Same assert as https://bugs.chromium.org/p/chromium/issues/detail?id=816490, but has been marked as closed. So why are we still seeing this?
Labels: -Pri-1 Pri-3
I can't reproduce it locally.

Clusterfuzz seems also fail to reproduce the issue. The latest test stack trace crashed at "frame_sink_manager_impl.cc(62)] Check failed: sink_map_.empty()". It gave up minimization because of "Unable to reproduce crash reliably, skipping minimization (crashed 1/10)", and gave up regression job because of "Low confidence in regression range. Test case crashes in revision r583531 but not later revision r583547".

Project Member

Comment 5 by bugdroid1@chromium.org, Oct 11

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2902364fae7a4ae8a6225a643d2a5a3be89900d8

commit 2902364fae7a4ae8a6225a643d2a5a3be89900d8
Author: Xianzhu Wang <wangxianzhu@chromium.org>
Date: Thu Oct 11 19:39:02 2018

Output more meaningful information on compositing layer paint offset mismatch

Bug: 890598
Cq-Include-Trybots: luci.chromium.try:linux_layout_tests_slimming_paint_v2;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I2aee8bf37891a163ce8182ef1c4e620eab5dcf2a
Reviewed-on: https://chromium-review.googlesource.com/c/1276890
Reviewed-by: vmpstr <vmpstr@chromium.org>
Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#598891}
[modify] https://crrev.com/2902364fae7a4ae8a6225a643d2a5a3be89900d8/third_party/blink/renderer/core/paint/compositing/compositing_layer_property_updater.cc

With the #c5 CL, the DCHECK failure is:

[1:1:1012/004641.310970:FATAL:compositing_layer_property_updater.cc(57)] Check failed: layout_snapped_paint_offset == snapped_paint_offset ("7.98438,16" vs. "8,16")"LayoutBlockFlow METER"

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