Re: how to debug

[Leonidas Tsampros <ltsampros@upnet.gr>]

Tassilo Horn <tassilo@member.fsf.org> writes:
> lee <lee@yun.yagibdah.de> writes:
>
> Hi!
>
>> with emacs 24 from tonight, gnus sometimes keeps emacs busy
>> indefinitely when checking for new news (pressing `g' in the group
>> buffer).  I'm getting messages like:
>>
>> ,---- [ *Messages* ]
>> | Checking new news...
>> | Reading active file from diary via nndiary...
>> | Opening nndiary server on diary...done
>> | Reading incoming mail from file...
>> | nndiary: Reading incoming mail (no new mail)...done
>> | Reading active file from diary via nndiary...done
>> | gnutls.c: [0] (Emacs) fatal error: A TLS packet with unexpected length was received.
>
> I get that error twice a day, too.  But it doesn't seem to have any bad
> effect...
>
>> | Reading active file from yun via nnml...
>> | Reading incoming mail from file... [2 times]
>> | Reading incoming mail from maildir...
>> | Wrote /home/lee/Mail/mail/lists/mythtv-users/9043
>> | Wrote /home/lee/Mail/mail/lists/mythtv-users/9044
>> | Wrote /home/lee/Mail/mail/lists/debian-user/96166
>> | [...]
>> | Wrote /home/lee/Mail/mail/lists/debian-user/96168
>> | nnml: Reading incoming mail (21 new)...done
>> | Reading active file from yun via nnml...done
>> | Quit
>> `----
>>
>> When I press Ctrl-g, emacs isn't busy anymore.  I can even check for
>> news again, and it eventually works fine.
>
> I can observe a similar behavior since month.  Usually, the last output
> is "nnimap read 78k" and then it stalls until I hit C-g.  After that,
> all works fine again.

I can confirm this too! Using yesterday's emacs 24, and a pop3 mail
source I can confirm the exact same behaviour. It randomly stays stuck
while reading mail from the pop3 server. Pressing C-g and g to get the
news again eventually works fine with no bad side effects.

Setting debug-on-quit to t, I caught this but it's probably not enough:

Debugger entered--Lisp error: (quit)
  pop3-accept-process-output(#<process POP>)
  pop3-wait-for-messages(#<process POP> 22 175976)
  pop3-send-streaming-command(#<process POP> "RETR" 22 175976)
  pop3-movemail("~/.emacs-mail-crash-box")
mail-source-fetch-pop((pop :server "mail.popserver.com" :user "ltsampros" :password "password") #[(file orig-file) "\303\b\304\305	\206\b\n\232?\205\306\n\307\"\310%\207" [file in-group orig-file nnmail-split-incoming nnml-save-mail nil nnmail-get-split-group (pop :server "mail.popserver.com" :user "ltsampros" :password "password") nnml-active-number] 7])
  mail-source-fetch((pop :server "mail.popserver.com" :user "ltsampros" :password "password") #[(file orig-file) "\303\b\304\305	\206\b\n\232?\205\306\n\307\"\310%\207" [file in-group orig-file nnmail-split-incoming nnml-save-mail nil nnmail-get-split-group (pop :server "mail.popserver.com" :user "ltsampros" :password "password") nnml-active-number] 7])
  nnmail-get-new-mail-1(nnml nnml-save-incremental-nov "~/Mail.Gnus" nil nil nil)
  nnmail-get-new-mail(nnml nnml-save-incremental-nov "~/Mail.Gnus" nil)
  nnml-request-scan(nil "")
  gnus-request-scan(nil (nnml ""))
  gnus-read-active-file-1((nnml "") nil)
  gnus-read-active-for-groups((nnml "") (many-many-many data here)
  gnus-get-unread-articles(nil)
  gnus-setup-news(nil nil nil)
  byte-code("\b\204	\204\306 \210\202L\307\310!\210\311\n!\f\204\203!\312 \210\313\314\b#\210\307\315!\210\2036\316\317\320\"\210\321 \210\322!\210\323 \210\324\325!\210\326 \210\307\327!\210\314\207" [dont-connect did-connect gnus-startup-file gnus-current-startup-file gnus-slave gnus-use-dribble-file gnus-group-quit gnus-run-hooks gnus-startup-hook gnus-make-newsrc-file gnus-dribble-read-file gnus-setup-news nil gnus-setup-news-hook gnus-request-create-group "queue" (nndraft "") gnus-start-draft-setup gnus-group-list-groups gnus-group-first-unread-group gnus-configure-windows group gnus-group-set-mode-line gnus-started-hook level gnus-agent] 4)
  gnus-1(nil nil nil)
  gnus(nil)
  call-interactively(gnus t nil)
  execute-extended-command(nil)
  call-interactively(execute-extended-command nil nil)

Best Regards,
Leonidas Tsampros

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