GNU bug report logs - #11143
24.0.94; buggy buggy gnutls freezes emacs

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Leo <sdl.web <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.0.94; buggy buggy gnutls freezes emacs
Date: Sun, 01 Apr 2012 12:30:26 +0800

[Message part 1 (text/plain, inline)]

This issue isn't easy to reproduce because it depends on the network.

gnutls-boot can sometimes go into infinite 100% CPU consummation (looks
like a infinite loop) as shown in this screenshot:

[emacs-gnutls.png (image/png, attachment)]

[Message part 3 (text/plain, inline)]

C-g cannot stop it. I have left it running for > 15 minutes and no sign
of stopping too.

I know it is gnutls-boot because, I tried:

 - kill -USR2 <pid>
 - killall emacs

and a debug buffer pops up to say that. Unfortunately I was just about
to get a copy of the backtrace and the network was back to normal. But I
think gnutls is doing some funny business. gnutls should kill itself
after some time instead of freeze emacs forever.

Leo

Message #8 received at 11143 <at> debbugs.gnu.org (full text, mbox):

From: Ted Zlatanov <tzz <at> lifelogs.com>
To: Leo <sdl.web <at> gmail.com>
Cc: 11143 <at> debbugs.gnu.org
Subject: Re: bug#11143: 24.0.94; buggy buggy gnutls freezes emacs
Date: Sun, 08 Apr 2012 20:38:35 -0400

On Sun, 01 Apr 2012 12:30:26 +0800 Leo <sdl.web <at> gmail.com> wrote: 

L> This issue isn't easy to reproduce because it depends on the network.
L> gnutls-boot can sometimes go into infinite 100% CPU consummation (looks
L> like a infinite loop) as shown in this screenshot:

L> C-g cannot stop it. I have left it running for > 15 minutes and no sign
L> of stopping too.

L> I know it is gnutls-boot because, I tried:

L>  - kill -USR2 <pid>
L>  - killall emacs

L> and a debug buffer pops up to say that. Unfortunately I was just about
L> to get a copy of the backtrace and the network was back to normal. But I
L> think gnutls is doing some funny business. gnutls should kill itself
L> after some time instead of freeze emacs forever.

Please see the patch proposed for bug 10904.  You may have a similar
problem locking up in the handshake stage.  Let me know if it helps.

Thanks!
Ted

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