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

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

Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/dcb35fd5c675d00dafda22073ca7ecd5ee4d5815 (PrintRenderFrameHelper: Refuse to print framesets).

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.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7fefb08dc3487cdb6f679b60614f20e3001beb88

commit 7fefb08dc3487cdb6f679b60614f20e3001beb88
Author: rbpotter <rbpotter@chromium.org>
Date: Wed Jan 09 22:15:19 2019

PrintRenderFrameHelper: fix null dereference

Clusterfuzz error doesn't reproduce locally, but check that the document
is an HTML document and body is non-null before calling TagName().

Bug:  920163 
Change-Id: Iab500f3a9165c72ba07b998c758063cb02eef810
Reviewed-on: https://chromium-review.googlesource.com/c/1403519
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#621325}
[modify] https://crrev.com/7fefb08dc3487cdb6f679b60614f20e3001beb88/components/printing/renderer/print_render_frame_helper.cc

ClusterFuzz has detected this issue as fixed in range 621318:621341.

Detailed report: https://clusterfuzz.com/testcase?key=5666148380835840

Fuzzer: lcamtuf_cross_fuzz
Job Type: linux_ubsan_vptr_chrome
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::WebElement::TagName
  printing::IsPrintingFrameset
  printing::PrintRenderFrameHelper::Print
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_chrome&range=621060:621062
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_chrome&range=621318:621341

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5666148380835840

Additional requirements: Requires Gestures

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.

ClusterFuzz testcase 5666148380835840 is verified as fixed, so closing issue as verified.

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