One more attempt: stuck processes

[Sebastian Hagedorn]

--On 14. November 2007 16:39:44 -0500 Ken Murchison <murch at andrew.cmu.edu> 
wrote:

> It looks to me like we are timing out the client while the client is
> IDLEing, but we get a signal from idled in the middle of shutdown(). Try
> this patch.
>
> --- imapd.c.~1.535.~	2007-11-14 16:16:21.000000000 -0500
> +++ imapd.c	2007-11-14 16:22:59.000000000 -0500
> @@ -836,6 +836,8 @@
>   {
>       int i;
>
> +    idle_done(imapd_mailbox);
> +
>       proc_cleanup();
>
>       i = 0;

Thanks. I will try this patch as soon as I can, but it's clearly not the 
only issue, because the same thing happens with POP processes. Here's an 
example for one:

(gdb) bt
#0  0x0096441e in __read_nocancel () from /lib/tls/libc.so.6
#1  0x00ac02f7 in BIO_new_socket () from /lib/libcrypto.so.4
#2  0x00abe2b2 in BIO_read () from /lib/libcrypto.so.4
#3  0x00fcfe13 in ssl23_read_bytes () from /lib/libssl.so.4
#4  0x00fcec51 in ssl23_get_client_hello () from /lib/libssl.so.4
#5  0x00fce712 in ssl23_accept () from /lib/libssl.so.4
#6  0x00fd2c9a in SSL_accept () from /lib/libssl.so.4
#7  0x08052cb3 in shut_down ()
#8  0x0804e513 in shut_down ()
#9  0x0804d58c in ?? ()
#10 0x00000001 in ?? ()
#11 0x08dd6848 in ?? ()
#12 0x00000000 in ?? ()

As you see it looks very much like the IMAP stack trace, but obviously the 
IDLE routine is not a factor. OTOH, all the stuck IMAP processes I've 
looked at so far *did* have those idle_xxx lines in their traces. I am 
correct in assuming that that would only occur for clients that actually 
use IDLE, right?
-- 
     .:.Sebastian Hagedorn - RZKR-R1 (Gebäude 52), Zimmer 18.:.
Zentrum für angewandte Informatik - Universitätsweiter Service RRZK
.:.Universität zu Köln / Cologne University - ✆ +49-221-478-5587.:.
                   .:.:.:.Skype: shagedorn.:.:.:.
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