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    SubjectRe: TCP/PPP bug 2.3.5?

    also experiencing this on 2.2.9


    On Fri, 4 Jun 1999, Rik van Riel wrote:

    > On Fri, 4 Jun 1999, Rik van Riel wrote:
    >
    > > it looks like there's some bug in the TCP stack of
    > > at least 2.3.5.
    >
    > After looking closely, I have seen what seems to be
    > a LIFO problem, so it might have something to do with
    > bottom halves not getting run (or another LIFO order
    > which I'm unaware of).
    >
    > When the symptoms occur, network packets are in the
    > 'out' queue for several _minutes_, until the kernel
    > comes around to sending them -- even on an almost
    > empty line this problem occurs!
    >
    > Active Internet connections (w/o servers)
    > 0oto Recv-Q Send-Q Local Address Foreign Address State
    > tcp 0 64 agratax.demon.nl:1287 k052r.balpol.tudelf:cvs ESTABLISHED
    > tcp 0 9 agratax.demon.nl:1286 humbolt.nl.linux.o:pop3 ESTABLISHED
    > tcp 0 0 agratax.demon.nl:1284 k052r.balpol.tudelf:cvs TIME_WAIT
    > tcp 0 6170 agratax.demon.nl:1274 terra.geo.uu.nl:smtp ESTABLISHED
    > tcp 0 0 agratax.demon.nl:1231 pluto.news.demon.n:nntp ESTABLISHED
    > tcp 0 0 localhost:7100 localhost:1028 ESTABLISHED
    > tcp 0 0 localhost:1028 localhost:7100 ESTABLISHED
    >
    > The '6170' above has been there for almost 10 minutes (!),
    > while newer traffic seems to run without too much problems.
    > The newer '64' seems to have problems as well though :(
    >
    > This simply kills TCP connections. Somebody still awake
    > should probably code an emergency patch so that a fix is
    > available before Europe wakes up again :)
    >
    > Rik -- Open Source: you deserve to be in control of your data.
    > +-------------------------------------------------------------------+
    > | Le Reseau netwerksystemen BV: http://www.reseau.nl/ |
    > | Linux Memory Management site: http://www.linux.eu.org/Linux-MM/ |
    > | Nederlandse Linux documentatie: http://www.nl.linux.org/ |
    > +-------------------------------------------------------------------+
    >
    >
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