1564196 - Select All in very long text file crashes the content process

Status: RESOLVED DUPLICATE of bug 1524237

(Core :: DOM: Selection, defect, P2)

Description

[Botond Ballo [:botond]]

STR

1. Navigate to https://taskcluster-artifacts.net/IDH-fv3_TSm7HrKOptD8FA/0/public/test_info//logcat-emulator-5554.log
2. With the page content in focus, press Ctrl+A (Select All)

Expected results

All the text on the page is selected.

Actual results

The content process crashes. See crash report for a stack trace.

Comment 1

[Botond Ballo [:botond]]

Regression range goes back to 2015:

https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=51e3cb11a258&tochange=8af644c9b616

Given the stack trace, bug 1071562 seems likely?

Comment 2

[Mirko Brodesser (:mbrodesser-Igalia), offline until April 25h]

Could reproduce this on Ubuntu 18.04 with FF 67. The file mentioned in the description has roughly 120 MB, not uncommon these days.

Comment 3

[Gabriele Svelto [:gsvelto] (PTO)]

Bug 1524237 is the same issue but I don't know which component this should be in. I guess one of the two bugs should be dup'd but I can't say which because I don't know where the fix should happen.

Comment 4

[Rob Wu [:robwu]]

I would say that this is a duplicate of bug 1524237 because the root cause is in the widget code: https://bugzilla.mozilla.org/show_bug.cgi?id=1524237#c3
But although I've contributed a few patches in this area, I'm not part of of either module, so I'll defer the duplication decision to others.