Re: [Help-gnunet] gnunet-download deadlock

[Christian Grothoff]

On Friday 28 September 2007 11:26:47 am David Kuehling wrote:
> Hi,
>
> I noticed a problem of gnunet-download with SVN 5643 (2007-09-18).
> Doesn't react to Ctrl+C even after a day or so of running.  Attached GDB
> and did backtraces on all threads, see gdb.txt (attached).
>
> One thread waits on another to quit via 'pthread_join'.  Other thread
> waits on some mutex... looks like a deadlock.
>
> Although I played quite a lot with gnunet-download, this only happened
> once so far.

This looks like it maybe an issue with gnunetd -- gnunet-download is merely 
waiting for an operation to complete with gnunetd (and the assumption is that 
gnunetd completes this type of operation (reading request from socket) almost 
instantly.  So either your gnunetd is super-busy or deadlocked itself -- this 
is NOT a deadlock in gnunet-download (more like blocking IO).  

If it happens again, a gdb trace of gnunetd might give some insight.

Best,

Christian