Error while waiting for input: Bad file descriptor

[Julien Muchembled]

Le 07/02/14 16:42, Etienne Dechamps a écrit :
> On 07/02/2014 01:05 PM, Julien Muchembled wrote:
>> Thanks to recent fix of 'Failed to decrypt and verify packet' issue by Etienne, I decided to upgrade tinc on a few nodes.
>> I had to go back to 1.1pre9 immediately because tinc on my laptop didn't survive the restart of other nodes. It aborted with the following message:
>>    Error while waiting for input: Bad file descriptor
> 
> I probably won't have time to investigate this before the week-end, but you might want to indicate the commit you're building from. It would also be helpful to have debug level 4 (-d4) output mixed with the strace output so that we can see what tinc thinks it's doing while this is happening. In addition, more log history would probably be useful.
> 
Commit 132ba09
Actually, I increased verbosity when I did strace so I already have them.
I reproduce by shutting down my wlan interface. Here are the logs the match the sendto(3) calls:

Jul 02 01:39:52 t420s tinc.jmuchemb[29145]: srv2 (81.x.x.123 port 655) didn't respond to PING in 5 seconds
Jul 02 01:39:52 t420s tinc.jmuchemb[29145]: Closing connection with srv2 (81.x.x.123 port 655)
Jul 02 01:39:52 t420s tinc.jmuchemb[29145]: Sending DEL_EDGE to everyone (BROADCAST): 13 731fd74b tecra srv2
Jul 02 01:39:52 t420s tinc.jmuchemb[29145]: Sending 23 bytes of metadata to srv (192.168.2.2 port 655)
Jul 02 01:39:52 t420s tinc.jmuchemb[29145]: Trying to connect to srv2 (192.168.1.1 port 655)
Jul 02 01:39:52 t420s tinc.jmuchemb[29145]: Could not connect to srv2 (192.168.1.1 port 655): Network is unreachable
Jul 02 01:39:52 t420s tinc.jmuchemb[29145]: Could not set up a meta connection to srv2
Jul 02 01:39:52 t420s tinc.jmuchemb[29145]: Trying to re-establish outgoing connection in 5 seconds
Jul 02 01:39:52 t420s tinc.jmuchemb[29145]: Sending PING to srv (192.168.2.2 port 655): 8
Jul 02 01:39:52 t420s tinc.jmuchemb[29145]: Sending 2 bytes of metadata to srv (192.168.2.2 port 655)
Jul 02 01:39:52 t420s tinc.jmuchemb[29145]: Error while waiting for input: Bad file descriptor
and next:
Jul 02 01:39:52 t420s tinc.jmuchemb[29145]: Closing connection with srv (192.168.2.2 port 655)
Jul 02 01:39:52 t420s tinc.jmuchemb[29145]: Closing connection with tecra (MYSELF port 655)
Jul 02 01:39:52 t420s tinc.jmuchemb[29145]: Terminating