polegl stos tcp-v4 :(
testcase: np. ./builder -g fontconfig.spec
[<c0412615>] nf_iterate+0x55/0xa0
[<c04330e0>] dst_output+0x0/0x20
[<c04129ea>] nf_hook_slow+0x7a/0x140
[<c04330e0>] dst_output+0x0/0x20
[<c0433b15>] ip_queue_xmit+0x295/0x590
[<c04430e0>] dst_output+0x0/0x20
[<c0433490>] ip_finish_output2+0x0/0x1d0
[<c0433775>] ip_finish_output+0x115/0x220
[<c0433490>] ip_finish_output2+0x0/0x1d0
[<c04330eb>] dst_output+0xb/0x20
[<c0412a8c>] nf_hook_slow+0x11c/0x140
[<c04330e0>] dst_output+0x0/0x20
[<c0433b15>] ip_queue_xmit+0x295/0x590
[<c044a044>] tcp_v4_send_check+0x54/0x110
[<c0443b28>] tcp_transmit_skb+0x308/0x6b0
[<c044661c>] tcp_connect+0x3ac/0x490
[<c0309cef>] ip_randomid+0xef/0x140
[<c0449299>] tcp_v4_connect+0x619/0xb60
[<c0406324>] memcpy_toivec+0x54/0x90
[<c045a3b3>] inet_stream_connect+0x223/0x2c0
(...)
kernel panic: fatal exception in interrupt
In interrupt handler - not syncing
# ndisasm kernel-code.dump -b32
00000000 8B3F mov edi,[edi]
00000002 0F1807 prefetchnta [edi]
00000005 90 nop
00000006 81F928C614C0 cmp ecx,0xc014c628
0000000C 0F854AFFFFFF jnz near 0xffffff5c
00000012 8B db 0x8B
00000013 7C db 0x7C
/usr/src/linux-2.6.5+grsec/net/ipv4/af_inet.c:
/*
* Connect to a remote host. There is regrettably still a little
* TCP 'magic' in here.
*/
int inet_stream_connect(struct socket *sock, struct sockaddr *uaddr,
int addr_len, int flags)
{
struct sock *sk = sock->sk;
int err;
long timeo;
lock_sock(sk);
if (uaddr->sa_family == AF_UNSPEC) {
err = sk->sk_prot->disconnect(sk, flags);
sock->state = err ? SS_DISCONNECTING : SS_UNCONNECTED;
goto out;
}
switch (sock->state) {
default:
err = -EINVAL;
goto out;
case SS_CONNECTED:
err = -EISCONN;
goto out;
case SS_CONNECTING:
err = -EALREADY;
/* Fall out of switch with err, set for this state */
break;
case SS_UNCONNECTED:
err = -EISCONN;
if (sk->sk_state != TCP_CLOSE)
goto out;
err = sk->sk_prot->connect(sk, uaddr, addr_len);
if (err < 0)
goto out;
sock->state = SS_CONNECTING;
/* Just entered SS_CONNECTING state; the only
* difference is that return value in non-blocking
* case is EINPROGRESS, rather than EALREADY.
*/
err = -EINPROGRESS;
break;
}
timeo = sock_sndtimeo(sk, flags & O_NONBLOCK);
if ((1 << sk->sk_state) & (TCPF_SYN_SENT | TCPF_SYN_RECV)) {
/* Error code is set above */
if (!timeo || !inet_wait_for_connect(sk, timeo))
goto out;
err = sock_intr_errno(timeo);
if (signal_pending(current))
goto out;
}
/* Connection was closed by RST, timeout, ICMP error
* or another process disconnected us.
*/
if (sk->sk_state == TCP_CLOSE)
goto sock_error;
/* sk->sk_err may be not zero now, if RECVERR was ordered by user
* and error was received after socket entered established state.
* Hence, it is handled normally after connect() return successfully.
*/
sock->state = SS_CONNECTED;
err = 0;
out:
release_sock(sk);
return err;
sock_error:
err = sock_error(sk) ? : -ECONNABORTED;
sock->state = SS_UNCONNECTED;
if (sk->sk_prot->disconnect(sk, flags))
sock->state = SS_DISCONNECTING;
goto out;
}
wykladka na inet_stream_connect(...) nie brzmi dumnie.
ktos ma pomysla co z tym zrobic, czy wysylac to na lkml?
--
If you think of MS-DOS as mono, and Windows as stereo,
then Linux is Dolby Digital and all the music is free...
_______________________________________________________
złota zasada - kto się nie zna, niech się nie wypowiada
