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bug#10904: 24.0.93; Infinite loop in GnuTLS code during Gnus nnimap-init
From: |
Thomas Fitzsimmons |
Subject: |
bug#10904: 24.0.93; Infinite loop in GnuTLS code during Gnus nnimap-initiated SSL handshake |
Date: |
Mon, 27 Feb 2012 18:51:35 -0500 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.1.50 (gnu/linux) |
In GNU Emacs 24.0.93.7 (i686-pc-linux-gnu, GTK+ Version 2.12.12)
of 2012-02-23
Configured using:
`configure '--prefix=/home/fitzsim/Programs/emacs-24.0.93'
'--x-libraries=/home/fitzsim/Programs/awesome-3.4.11/lib''
Built against: GnuTLS 3.0.8
When I attempt to connect to an Exchange server using IMAP, Emacs
sometimes enters an infinite loop in the GnuTLS code.
I can replicate it on about 50% of attempts:
1. Run:
emacs -Q
2. Evaluate:
(setq gnutls-log-level 5
message-log-max t
gnus-directory "~/.emacs.d/gnus/News/"
gnus-startup-file "~/.emacs.d/gnus/.newsrc"
gnus-secondary-select-methods
(quote ((nnimap "<imap_server_hostname>"
(nnimap-server-address "<imap_server_hostname>")
(nnimap-server-port 993)
(nnimap-user "fitzsim")))))
3. Run:
M-x gnus
I've attached the *Messages* output for the passing and failing cases.
I've redacted the IMAP server name, and I had to install a patch to
limit the number of iterations of the loop to 100 so that I could copy
*Messages*.
In the failing case the server returns a non-zero-length SessionID, then
the infinite read loop is entered; when SessionID's length is 0, the
handshake succeeds and I'm greeted with the IMAP password prompt.
Thomas
messages-pass.txt
Description: Text document
messages-fail.txt
Description: Text document
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Thomas Fitzsimmons <=