[Bug 259052] New: Akonadi IMAP stalls when server subscription includes non-existent folders

[Thiago Macieira]

https://bugs.kde.org/show_bug.cgi?id=259052

           Summary: Akonadi IMAP stalls when server subscription includes
                    non-existent folders
           Product: Akonadi
           Version: 1.4.80
          Platform: Compiled Sources
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: IMAP resource
        AssignedTo: ervin at kde.org
        ReportedBy: thiago at kde.org
                CC: vkrause at kde.org, kdepim-bugs at kde.org


Version:           1.4.80 (using Devel) 
OS:                Linux

When I have some folders in my server-side subscription list that don't exist
(because they were deleted but not unsubscribed), Akonadi often stalls and
doesn't finish the process.

If this happens, the entire resource process becomes unresponsive. It's
impossible to trigger a new synchronisation or cancel the current running one.
It's also impossible to configure it.

gdb shows that the process is idling in the event loop.

Reproducible: Sometimes

Steps to Reproduce:
1. Start synchronisation in kmail or in akonadiconsole

Actual Results:  
Synchronisation stalls somewhere

Expected Results:  
Synchronisation should finish

$ akonadiserver --version
Akonadi 1.4.80 (revision: d0502b1)

Account: IMAP, disconnect mode enabled, server-side subscriptions enabled
Server: Microsoft Exchange 2010
Transport: SSL

Example of traffic:
C: A001036 SELECT "INBOX/dev/ci errors"
S: A001036 NO INBOX/dev/ci errors doesn't exist.

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