netdev
[Top] [All Lists]

tcp heisenbug

To: "David S. Miller" <davem@xxxxxxxxxxxxx>
Subject: tcp heisenbug
From: Andrew Morton <akpm@xxxxxxxx>
Date: Fri, 8 Oct 2004 01:41:51 -0700
Cc: netdev@xxxxxxxxxxx
Sender: netdev-bounce@xxxxxxxxxxx
I just booted my main workstation into 2.6.9-rc3-mm3 (approx).

fetchmail broke.  It's fetching mail from localhost (ssh port-forwarded to
remote servers) and then for some reason it wants to open an SMTP
connection to localhost.  It was failing, some error message about that
SMTP connection.

While I was poking at it, it started to work.  `uptime' said 6 minutes.  So
I'd be suspecting that there's a jiffy wrap bug in TCP-to-localhost
introduced since 2.6.9-rc3.

I rebooted to do more diagnosis and the damn thing worked fine.

I can't see anything suspicious in the post-rc3 net/ diff.  But if anyone
has fiddled with time-related things in networking, please double-check
your work?

<Prev in Thread] Current Thread [Next in Thread>