--- ip_conntrack_helper_h323.c
+++ ip_conntrack_helper_h323.c
@@ -1814,6 +1814,7 @@
{
ip_conntrack_helper_unregister(&ip_conntrack_helper_ras);
ip_conntrack_helper_unregister(&ip_conntrack_helper_q931);
+ ip_conntrack_helper_unregister(&ip_conntrack_helper_h245);
kfree(h323_buffer);
DEBUGP("ip_ct_h323: fini\n");
}
@@ -1828,7 +1829,8 @@
if (!h323_buffer)
return -ENOMEM;
if ((ret = ip_conntrack_helper_register(&ip_conntrack_helper_q931)) ||
- (ret = ip_conntrack_helper_register(&ip_conntrack_helper_ras))) {
+ (ret = ip_conntrack_helper_register(&ip_conntrack_helper_ras)) ||
+ (ret = ip_conntrack_helper_register(&ip_conntrack_helper_h245))) {
fini();
return ret;
}
On 6/14/08, liannan <liannan@xxxxxxxx> wrote:
> Hi, zhaojingmin
> Two computer(a linux box as a router, one in nat, the other one outside of nat) has established a connection by Windows Netmeeting. When I did rmmod ip_nat_h323.ko & ip_conntrack_h323.ko, then hang up the call, it caused a kernel panic.
> I found that the epc is the address of "h245_help" function. The helper didn't set to null when h323 conntrack module fini.
> If I flushed ip_conntrack first, then rmmod the module & hang up, it' all right. I also tried patch-2.6.18-nath323-1.5, the problem still exist.
>
> ________________________________________________________________________________________________
>
> CPU 0 Unable to handle kernel paging request at virtual address c00a6828, epc == 802224dc, ra == 801d4e7c
> Oops[#1]:
> Cpu 0
> $ 0 : 00000000 00000000 00000004 c00a67f0
> $ 4 : 802a5ad0 81657e00 00000000 00000000
> $ 8 : 00000008 801461c8 00000000 80570050
> $12 : 819b0280 819b04b0 00000006 00000000
> $16 : 802a5a60 80000000 80b46000 80321010
> $20 : 00000000 00000004 802a5ad0 00000001
> $24 : 00000000 802257a8
> $28 : 802a4000 802a59e8 00000004 801d4e7c
> Hi : 0000000b
> Lo : 00506320
> epc : 802224dc ip_conntrack_help+0x38/0x74 Tainted: P
> ra : 801d4e7c nf_iterate+0xbc/0x130
> Status: 1000f403 KERNEL EXL IE
> Cause : 00800008
> BadVA : c00a6828
> PrId : 00019374
> Modules linked in: ip_nat_pptp ip_conntrack_pptp ath_pktlog wlan_acl wlan_wep wlan_tkip wlan_ccmp wlan_xauth ath_pci ath_dev ath_dfs ath_rate_atheros wlan ath_hal ip_nat_tftp ip_conntrack_tftp ip_nat_ftp ip_conntrack_ftp pppoe ppp_async ppp_deflate ppp_mppe pppox ppp_generic slhc
> Process swapper (pid: 0, threadinfo=802a4000, task=802a6000)
> Stack : 801e7d98 00000004 802a5a60 80000000 801d4e7c 801d4e7c 802a5ad0 00000004
> 00000000 00000000 801e7d98 00000000 00000004 802a5ad0 00000000 00000010
> 801e7d98 80b46000 802a5a60 80320000 80000000 801d4f8c 802a5b00 00000002
> 80063834 00000000 80b46000 802a5a60 801e7d98 80000000 802ba854 00000000
> 81a02180 80b7e260 81a021b0 819b0000 819b0000 80570056 00000000 00000001
> ...
> Call Trace:
> [<801e7d98>] ip_finish_output+0x0/0x23c
> [<801d4e7c>] nf_iterate+0xbc/0x130
> [<801d4e7c>] nf_iterate+0xbc/0x130
> [<801e7d98>] ip_finish_output+0x0/0x23c
> [<801e7d98>] ip_finish_output+0x0/0x23c
> [<801d4f8c>] nf_hook_slow+0x9c/0x1a4
> [<80063834>] handle_adel_int+0x2c/0x38
> [<801e7d98>] ip_finish_output+0x0/0x23c
> [<801e81c8>] ip_output+0x1f4/0x30c
> [<801e4d70>] ip_forward_finish+0x0/0x58
> [<801e7d98>] ip_finish_output+0x0/0x23c
> [<801e4fe0>] ip_forward+0x218/0x368
> [<801e5104>] ip_forward+0x33c/0x368
> [<801e4d70>] ip_forward_finish+0x0/0x58
> [<801e3780>] ip_rcv+0x33c/0x65c
> [<801e30ec>] ip_rcv_finish+0x0/0x358
> [<801bad10>] netif_receive_skb+0x464/0x4d0
> [<80255650>] br_pass_frame_up+0xa0/0xac
> [<801ba8ac>] netif_receive_skb+0x0/0x4d0
> [<80255f4c>] br_handle_frame_finish+0x188/0x250
> [<80255e58>] br_handle_frame_finish+0x94/0x250
> [<801d4f8c>] nf_hook_slow+0x9c/0x1a4
> [<80255dc4>] br_handle_frame_finish+0x0/0x250
> [<8025af70>] br_nf_pre_routing_finish+0x224/0x474
> [<80233408>] ip_nat_in+0x30/0xd8
> [<80255dc4>] br_handle_frame_finish+0x0/0x250
> [<80233428>] ip_nat_in+0x50/0xd8
> [<8025ad4c>] br_nf_pre_routing_finish+0x0/0x474
> [<801d4e7c>] nf_iterate+0xbc/0x130
> [<8025ad4c>] br_nf_pre_routing_finish+0x0/0x474
> [<8025ad4c>] br_nf_pre_routing_finish+0x0/0x474
> [<801d4f8c>] nf_hook_slow+0x9c/0x1a4
> [<8025ad4c>] br_nf_pre_routing_finish+0x0/0x474
> [<8025ba1c>] br_nf_pre_routing+0x7ec/0x838
> [<8025ba50>] br_nf_pre_routing+0x820/0x838
> [<8025ad4c>] br_nf_pre_routing_finish+0x0/0x474
> [<801d4e7c>] nf_iterate+0xbc/0x130
> [<80255dc4>] br_handle_frame_finish+0x0/0x250
> [<80255dc4>] br_handle_frame_finish+0x0/0x250
> [<801d4f8c>] nf_hook_slow+0x9c/0x1a4
> [<80255dc4>] br_handle_frame_finish+0x0/0x250
> [<802562cc>] br_handle_frame+0x260/0x274
> [<c01b5e24>] ath_rx_tasklet+0x5e4/0xa50 [ath_dev]
> [<8017e758>] ag7100_buffer_alloc+0x18/0x50
> [<80255dc4>] br_handle_frame_finish+0x0/0x250
> [<801bac5c>] netif_receive_skb+0x3b0/0x4d0
> [<c011d304>] ath_hal_reg_read+0x38/0x4c [ath_hal]
> [<8017eb0c>] ag7100_poll+0x214/0x664
> [<801baff0>] net_rx_action+0x9c/0x19c
> [<8008c2ec>] __do_softirq+0x84/0x118
> [<8008c3e8>] do_softirq+0x68/0x80
> [<800647f4>] do_IRQ+0x24/0x34
> [<8006134c>] ar7100_interrupt_receive+0xec/0x100
> [<8006134c>] ar7100_interrupt_receive+0xec/0x100
> [<80062be4>] r4k_wait+0x0/0xc
> [<80064a30>] cpu_idle+0x50/0x58
> [<80062be8>] r4k_wait+0x4/0xc
> [<802df884>] start_kernel+0x26c/0x2b8
> [<802df130>] unknown_bootoption+0x0/0x310
> Code: 24020004 10e2000c 00e03021 <8c620038> 0040f809 00000000 24030001 10430005 00402021
> Kernel panic - not syncing: Aiee, killing interrupt handler!
>
>
>
>
>
> liannan
> 2008-06-14
>
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