813223 - Events with duplicate attendee lines cause Lightning and Thunderbird to freeze

Status: RESOLVED DUPLICATE of bug 875739

(Calendar :: Lightning Only, defect)

Description

[Jacob Fortune]

Attachment: Contains an example ics file that, if imported to a subscribed calendar, will cause Lightning to hang.

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.64 Safari/537.11

Steps to reproduce:

From a migration, we have some questionable ics data in our system.  One particularly problematic situation we've seen is when a VEVENT has two entries for the same ATTENDEE.  In our case, these ATTENDEE properties have identical PARTSTAT and CU-TYPEs, but some varied X-properties.  See attached file for an example.


Actual results:

When Lightning runs into these events, Thunderbird stops responding completely.  Nothing is logged in error console before freezing completely, so it's not clear what is happening.


Expected results:

Lightning should handle the processing of bad data more gracefully.  If you subscribe to a calendar with a bad event in it, the only way I've found to recover Thunderbird at all is to remove the subscription from the prefs.js file.

Comment 1

[Andrew McCreight [:mccr8]]

Attachment: Fail when a process does not produce a leak log.

Here's the trivial test harness part of this.

Comment 2

[Andrew McCreight [:mccr8]]

Comment on attachment 8483573 [details] [diff] [review]
Fail when a process does not produce a leak log.

Oops, wrong bug number.

Comment 3

[Philipp Kewisch [:Fallen] [:📆][:🧩]]

I think this might be the same root cause as bug 875739