Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/66bc943f8f0557fc1d522546df16f4752db8014a (We never ask for text style without parent style.).

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.

Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.

 Issue 920113  has been merged into this issue.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7586e935847e1db6035495ea32624e01cbdd5ba3

commit 7586e935847e1db6035495ea32624e01cbdd5ba3
Author: Rune Lillesveen <futhark@chromium.org>
Date: Wed Jan 09 13:42:02 2019

Missing null check for text style.

Crash introduced in [1]. Need to null check StyleForText now that we do
not return initial style.

[1] https://chromium-review.googlesource.com/c/chromium/src/+/1400689

Bug:  920090 
Change-Id: I8223c2f6054cd8c8eb7bf711ba1d2db9ae6837ae
Reviewed-on: https://chromium-review.googlesource.com/c/1402788
Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
Commit-Queue: Rune Lillesveen <futhark@chromium.org>
Cr-Commit-Position: refs/heads/master@{#621130}
[modify] https://crrev.com/7586e935847e1db6035495ea32624e01cbdd5ba3/third_party/blink/renderer/core/dom/text.cc
[add] https://crrev.com/7586e935847e1db6035495ea32624e01cbdd5ba3/third_party/blink/web_tests/fast/css/text-style-recalc-not-in-flat-tree-crash.html

ClusterFuzz testcase 5088326432063488 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.

ClusterFuzz has detected this issue as fixed in range 621129:621130.

Detailed report: https://clusterfuzz.com/testcase?key=5646021358780416

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

Crash Type: Null-dereference READ
Crash Address: 0x000000000040
Crash State:
  blink::ComputedStyle::InheritedEqual
  blink::Text::RecalcTextStyle
  blink::ContainerNode::RecalcDescendantStyles
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_chrome_media&range=620890:620891
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_chrome_media&range=621129:621130

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5646021358780416

See https://github.com/google/clusterfuzz-tools for instructions to reproduce this bug locally.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.