linux-kernel - [bug] networking broke, ssh: connect to port 22: Protocol error

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Date:	Wed, 6 Feb 2008 12:38:29 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	"David S. Miller" <davem@...emloft.net>,
	linux-kernel@...r.kernel.org
Cc:	netdev@...r.kernel.org
Subject: [bug] networking broke, ssh: connect to port 22: Protocol error

randconfig qa on x86.git ran into the following new networking related 
problem on latest -git: with the attached .config the testbox comes up 
but cannot establish any TCP connections due to -ENOPROTO in 
sys_connect().

The error comes from this condition in inet_stream_connect():

        /* Connection was closed by RST, timeout, ICMP error
         * or another process disconnected us.
         */
        if (sk->sk_state == TCP_CLOSE)
                goto sock_error;

ICMP pings do work to the machine. Netfilter is on in the .config, maybe 
some new option prevents TCP connections from being established?

CONFIG_SECURITY_NETWORK and CONFIG_SECURITY_SMACK is enabled as well. 
(but that shouldnt throw a no-protocol error)

	Ingo

View attachment "config" of type "text/plain" (57885 bytes)