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/+/26f2a38310463295809c84c57c64a8fe98f7afb8 (Move ProfileSyncService init logic to constructor).

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.

ClusterFuzz has detected this issue as fixed in range 617276:617277.

Detailed report: https://clusterfuzz.com/testcase?key=4568332348686336

Fuzzer: lcamtuf_cross_fuzz
Job Type: linux_ubsan_vptr_chrome
Platform Id: linux

Crash Type: Abrt
Crash Address: 0x053900000001
Crash State:
  blink::MIDIDispatcher::RemoveAccessor
  blink::LifecycleNotifier<blink::ExecutionContext, blink::ContextLifecycleObserve
  blink::Document::Shutdown
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_chrome&range=617112:617113
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_chrome&range=617276:617277

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4568332348686336

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 4568332348686336 is verified as fixed, so closing issue as verified.

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

915578 is related

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/dd9eb87d56e7d318281cd6ebe4767c8dd248e236

commit dd9eb87d56e7d318281cd6ebe4767c8dd248e236
Author: Adithya Srinivasan <adithyas@chromium.org>
Date: Thu Dec 20 16:26:06 2018

[WebMIDI] Check if accessor is in array before calling erase

The accessor may be in accessors_waiting_session_queue as SessionStarted
may not have been called when the document shuts down.

Bug: 915578,  915844 , 582328
Change-Id: Ie7d864bcdaeb9dec9c3153ff1026de58d7aa8050
Reviewed-on: https://chromium-review.googlesource.com/c/1379920
Commit-Queue: Adithya Srinivasan <adithyas@chromium.org>
Reviewed-by: Takashi Toyoshima <toyoshim@chromium.org>
Cr-Commit-Position: refs/heads/master@{#618234}
[modify] https://crrev.com/dd9eb87d56e7d318281cd6ebe4767c8dd248e236/third_party/blink/renderer/modules/webmidi/midi_dispatcher.cc

ClusterFuzz testcase 4568332348686336 appears to be flaky, updating reproducibility label.