Re: WARNING: at net/ipv4/tcp_input.c:2054 tcp_mark_head_lost()
From: Guillaume Chazarain
Date: Sun Mar 02 2008 - 08:16:02 EST
On Sun, Mar 2, 2008 at 1:38 PM, Ilpo JÃrvinen <ilpo.jarvinen@xxxxxxxxxxx> wrote:
> In future, please inline at least the first one of them, if not sure
> where to cut, too much won't hurt... :-)
OK, will do.
> > It does not contain any "KERNEL: assertion (packets <=
> > tp->packets_out) failed at" line, so I'm afraid it's just noise.
>
> At least it catches one bug which could cause that assertion (it is much
> more rigid than the assertion and thus it catched it even though you
> won't see that assertion to ever trigger :-)).
Great :-)
> Could you next figure out what is at:
> [<c02e0f83>] tcp_ack+0x621/0xd2f
tcp_clean_rtx_queue() is automatically inlined into tcp_ack() by gcc.
That's:
tcp_ack():
/* See if we can take anything off of the retransmit queue. */
flag |= tcp_clean_rtx_queue(sk, prior_fackets);
tcp_clean_rtx_queue():
tcp_verify_left_out(tp); <=========== Here
if (skb && (TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_ACKED))
flag |= FLAG_SACK_RENEGING;
Thanks.
--
Guillaume
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