One more attempt: stuck processes

[Sebastian Hagedorn]

--On 16. November 2007 09:37:42 -0600 Gary Mills <mills at cc.umanitoba.ca> 
wrote:

>> Could you get a stack trace? If you have gdb you just call it with "gdb
>> -p  19175". Then you can do "bt" at the prompt. I forget how to do it
>> with  Sun's debugger.
>
> Easy:
>
>   # pstack 19175
>   19175:  pop3d -s
>    fef9f810 read     (0, 2316f0, 5)
>    fee1d2d0 read     (0, 2316f0, 5, 0, 0, 0) + 5c
>    ff06bb38 sock_read (1f0860, 2316f0, 5, 5, 0, 0) + 24
>    ff068af0 BIO_read (1f0860, 2316f0, 5, fef98b84, 0, 0) + 110
>    ff278488 ssl3_read_n (212798, 5, 8805, 0, 0, 203958) + 174
>    ff2785fc ssl3_get_record (204ce0, 8000, 8400, 4400, f1, f0) + d0
>    ff279424 ssl3_read_bytes (212798, 1000, 2000, 4, 0, ffbfe731) + 228
>    ff27a99c ssl3_get_message (ff2a259c, 2070a0, 0, ffffffff, 19000,
> ffbfe7a0) + d0 ff27042c ssl3_accept (2150, 2160, 2180, 21e0, 2110, 2122)
> + 904    ff27bd2c ssl23_get_client_hello (2316fb, 6c, 6c, 4, fffffe79, 0)
> + 828    ff27b4b4 ssl23_accept (4000, 2000, 0, 0, 0, 0) + 2a4
>    00032d00 tls_start_servertls (0, 1, ffbfee24, ffbfee20, 1849a8, ff00)
> + 198    0002c504 cmd_starttls (1, 1fd8b8, 0, 0, 0, 0) + 184
>    0002a638 service_main (2, 192198, ffbffce0, 1aec4, 3508c, 1) + 488
>    00035250 main     (2, ffbffcd4, ffbffce0, 17c400, 0, 0) + e18
>    00029298 _start   (0, 0, 0, 0, 0, 0) + 108

Thanks, that looks like progress! That stack trace looks similar enough to 
the one I'm seeing that I could imagine that it is what I *should* be 
seeing if the stack weren't garbled. Of course that's only speculation.

Ken, is it possible that the call to SSL_accept() in tls_start_servertls() 
blocks when the client goes away? That could explain everything ....
-- 
     .:.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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