[Bug 271993] New: kio_imap4 cause /home directory locked, and other progresses become uninterruptible sleep

[Shen Miren]

https://bugs.kde.org/show_bug.cgi?id=271993

           Summary: kio_imap4 cause /home directory locked, and other
                    progresses become uninterruptible sleep
           Product: kde
           Version: 4.6
          Platform: openSUSE RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: unassigned-bugs at kde.org
        ReportedBy: dickeny at gmail.com


Version:           4.6 (using KDE 4.6.2) 
OS:                Linux

I'm using KMail on my laptop. After days running, the kio_imap4 happened to
lock /home directory, and only the KMail could be 'running' ( I 'strace' it),
while the other progress which have IO on /home/xxxx will goes into
uninterruptible sleep( the 'D' state showed in 'top' command). Even the command
'cd /home/' by root will goes into sleep either. (And there is no way to
stop/kill those progeesses!)

After exec commmand 'pkill kio_imap4', and the whole system wake up again...

Reproducible: Sometimes

Steps to Reproduce:
Maybe running KMail for quite a time ( < 9 days )

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