[Bug 228599] New: if IMAP processes hang, only kill -9 helps to shut down kmail

[Willi Richert]

https://bugs.kde.org/show_bug.cgi?id=228599

           Summary: if IMAP processes hang, only kill -9 helps to shut
                    down kmail
           Product: kmail
           Version: 1.13.0
          Platform: unspecified
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kdepim-bugs at kde.org
        ReportedBy: w.richert at gmx.net


Version:           1.13.0 (using 4.4.00 (KDE 4.4.0), Kubuntu packages)
Compiler:          cc
OS:                Linux (x86_64) release 2.6.31-19-generic

I have 2 IMAP accounts, which I check regularly. Very often (once an hour) one
of both accounts does not show me the Inbox mails, but hangs instead waiting.
Ctrl-Q closes kontact with kmail, but kmail still is an active process:

wr@[kagu]:~> pss kontact
 2835 ?        Sl     0:41 /usr/bin/kontact
 4805 ?        S      0:00 kdeinit4: kio_imap4 [kdeinit] imap
local:/tmp/ksocket-wr/klauncherMT2473.slave-socket
local:/tmp/ksocket-wr/kontactft2835.slave-socket
 4807 ?        S      0:00 kdeinit4: kio_imap4 [kdeinit] imap
local:/tmp/ksocket-wr/klauncherMT2473.slave-socket
local:/tmp/ksocket-wr/kontactth2835.slave-socket
 5605 ?        S      0:00 kdeinit4: kio_http [kdeinit] http
local:/tmp/ksocket-wr/klauncherMT2473.slave-socket
local:/tmp/ksocket-wr/kontactRQ2835.slave-socket 
 5938 ?        S      0:00 kdeinit4: kio_http [kdeinit] http
local:/tmp/ksocket-wr/klauncherMT2473.slave-socket
local:/tmp/ksocket-wr/kontactFh2835.slave-socket 
 5939 ?        S      0:00 kdeinit4: kio_http [kdeinit] http
local:/tmp/ksocket-wr/klauncherMT2473.slave-socket
local:/tmp/ksocket-wr/kontactvf2835.slave-socket 
 5940 ?        S      0:00 kdeinit4: kio_http [kdeinit] http
local:/tmp/ksocket-wr/klauncherMT2473.slave-socket
local:/tmp/ksocket-wr/kontactFo2835.slave-socket 
 5941 ?        S      0:00 kdeinit4: kio_http [kdeinit] http
local:/tmp/ksocket-wr/klauncherMT2473.slave-socket
local:/tmp/ksocket-wr/kontactsl2835.slave-socket 
 6167 pts/2    R+     0:00 grep kontact                                         


wr@[kagu]:~> kill 2835

 wr@[kagu]:~> pss kontact
 4805 ?        S      0:00 kdeinit4: kio_imap4 [kdeinit] imap
local:/tmp/ksocket-wr/klauncherMT2473.slave-socket
local:/tmp/ksocket-wr/kontactft2835.slave-socket
 4807 ?        S      0:00 kdeinit4: kio_imap4 [kdeinit] imap
local:/tmp/ksocket-wr/klauncherMT2473.slave-socket
local:/tmp/ksocket-wr/kontactth2835.slave-socket
 5605 ?        S      0:00 kdeinit4: kio_http [kdeinit] http
local:/tmp/ksocket-wr/klauncherMT2473.slave-socket
local:/tmp/ksocket-wr/kontactRQ2835.slave-socket
 5938 ?        S      0:00 kdeinit4: kio_http [kdeinit] http
local:/tmp/ksocket-wr/klauncherMT2473.slave-socket
local:/tmp/ksocket-wr/kontactFh2835.slave-socket
 5939 ?        S      0:00 kdeinit4: kio_http [kdeinit] http
local:/tmp/ksocket-wr/klauncherMT2473.slave-socket
local:/tmp/ksocket-wr/kontactvf2835.slave-socket
 5940 ?        S      0:00 kdeinit4: kio_http [kdeinit] http
local:/tmp/ksocket-wr/klauncherMT2473.slave-socket
local:/tmp/ksocket-wr/kontactFo2835.slave-socket
 5941 ?        S      0:00 kdeinit4: kio_http [kdeinit] http
local:/tmp/ksocket-wr/klauncherMT2473.slave-socket
local:/tmp/ksocket-wr/kontactsl2835.slave-socket
 6185 pts/2    S+     0:00 grep kontact


The only chance then to start kontact again is to kill all process with -9!
Kill alone does not work here.

Summarizing, I see to major show stoppers: 
1) kmail's imap processes hang very often
2) closing/starting kontact does not work because of the processes in the
background

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