Hi,All
We runing linux-2.6.14 on a MIPS like platform,
When running a bittorrent client, there is a misalignment in tcp
header occurs randomly.
Now, we know that it caused by line 319 of net/ipv4/tcp_output.c.
th = (struct tcphdr *) skb_push(skb, tcp_header_size);
skb->h.th = th;
skb_set_owner_w(skb, sk);
/* Build TCP header and checksum it. */
th->source = inet->sport;(Line 319 of tcp_output.c)
th: 82ffa881
Call Trace:
[<80373acc>] tcp_transmit_skb+0xcc0/0xd10
[<80373ad8>] tcp_transmit_skb+0xccc/0xd10
[<80374ab4>] tcp_retransmit_skb+0x178/0x8f4
[<80374aa0>] tcp_retransmit_skb+0x164/0x8f4
[<8035502c>] ip_rcv+0x4d0/0x704
[<803778f8>] tcp_write_timer+0x37c/0x8e0
[<80377a70>] tcp_write_timer+0x4f4/0x8e0
[<80039a40>] update_process_times+0x90/0x1bc
[<8037757c>] tcp_write_timer+0x0/0x8e0
[<80039ccc>] run_timer_softirq+0x160/0x2b4
[<80008c0c>] timer_interrupt+0x13c/0x2ac
[<80008c0c>] timer_interrupt+0x13c/0x2ac
[<80033a80>] __do_softirq+0xa8/0x14c
[<80033bcc>] do_softirq+0xa8/0xb0
[<80003888>] do_IRQ+0x34/0x4c
[<800016cc>] c2IRQ+0x10c/0x1a0
[<80003b10>] cpu_idle+0x30/0x3c
[<80003afc>] cpu_idle+0x1c/0x3c
[<805386d4>] start_kernel+0x268/0x28c
[<805386cc>] start_kernel+0x260/0x28c
[<805386a0>] start_kernel+0x234/0x28c
[<80000800>] kernel_entry_jump+0x0/0x20
Could you give me some advices how to fix the problems.
Thanks.
--
To unsubscribe from this list: send the line "unsubscribe linux-net" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
