1334673 - Crash in IPCError-browser | PDocAccessibleParent::RecvShowEvent invalid index

Status: RESOLVED FIXED

(Core :: Disability Access APIs, defect)

Description

[Andrew McCreight [:mccr8]]

This bug was filed from the Socorro interface and is 
report bp-64777aa1-390c-4210-a5ab-8556c2170127.
=============================================================

This looks like a new crash as of January 25. Same function as bug 1334058, but a different error message.

It looks like this is a result of bug 1332690 added more information to a failure.

Comment 1

[Andrew McCreight [:mccr8]]

Maybe you can make some use of this crash information, Trevor.

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

Crash volume for signature 'IPCError-browser | PDocAccessibleParent::RecvShowEvent invalid index':
 - nightly (version 54): 530 crashes from 2017-01-23.
 - aurora  (version 53): 0 crashes from 2017-01-23.
 - beta    (version 52): 0 crashes from 2017-01-23.
 - release (version 51): 0 crashes from 2017-01-16.
 - esr     (version 45): 0 crashes from 2016-08-03.

Crash volume on the last weeks (Week N is from 01-30 to 02-05):
            W. N-1  W. N-2  W. N-3  W. N-4  W. N-5  W. N-6  W. N-7
 - nightly     324
 - aurora        0
 - beta          0
 - release       0       0
 - esr           0       0       0       0       0       0       0

Affected platform: Windows

Crash rank on the last 7 days:
           Browser   Content   Plugin
 - nightly           #5
 - aurora
 - beta
 - release
 - esr

Comment 3

[Trevor Saunders (:tbsaunde)]

Attachment: ignore some invalid Show event messages

I'm not having much luck debugging this, so lets disable these checks for now and only crash when we hit a more serious problem, hopefully that'll make things more usable for people with touch screens till we disable a11y there.

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/mozilla-inbound/rev/03f88e289233
ignore some invalid Show event messages r=davidb

Comment 5

[Wes Kocher (:KWierso) (Not reading bugmail; email directly if needed)]

https://hg.mozilla.org/mozilla-central/rev/03f88e289233

Comment 6

[Ryan VanderMeulen [:RyanVM]]

If I understand correctly, this is just a mutation of an existing crash signature? Do we need to uplift this to Aurora then too?

Comment 7

[Liz Henry (:lizzard) (relman/hg->git project)]

This crash signature only shows up in 54. Looks like bug 1332690 may be related but work there just landed and was backed out.

Comment 8

[Trevor Saunders (:tbsaunde)]

we should probably uplift the work around.  Its not great, but fixes some crashes.

Comment 9

[Ryan VanderMeulen [:RyanVM]]

Please request Aurora approval in that case.

Comment 10

[Ryan VanderMeulen [:RyanVM]]

e10s+a11y isn't riding past Aurora on 53.