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<DIV><FONT face=Arial size=2>Sadly, this bug still exist in new
cttproxy-2.0.5</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Environment: </FONT></DIV>
<DIV><FONT face=Arial size=2> Windows 2000 <--> Linux with tproxy
<--> VPN server.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Linux kernel is 2.6.17 with cttproxy-2.6.17-2.0.5
all four patch.</FONT></DIV>
<DIV><FONT face=Arial size=2>When I do Virtual Private Connectio from Win2000 to
VPN server, the linux box will be crash, </FONT></DIV>
<DIV><FONT face=Arial size=2>the following are </FONT><FONT face=Arial
size=2>crashing messages:</FONT></DIV></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>BUG: unable to handle kernel paging request at
virtual address 00003f0a<BR> printing eip:<BR>*pde = 00000000<BR>Oops: 0002
[#1]<BR>Modules linked in: ebt_vlan ebtable_broute ebtables ipt_TPROXY
iptable_tproxy iptable_nat iptable_mangle iptable_filter ipt_hashlimit
ipt_connlimit xt_state xt_pkttype xt_multiport xt_mark xt_length xt_conntrack
ipt_REJECT ipt_LOG ip_queue ip_nat_snmp_basic ip_nat_pptp ip_nat_irc ip_nat_ftp
ip_nat ip_conntrack_pptp ip_conntrack_irc ip_conntrack_ftp ip_conntrack
nfnetlink ip_tables e100 mii bridge llc usbhid dm_mod sd_mod isofs ide_cd cdrom
ide_disk pcspkr i2c_i801 piix ide_core shpchp ehci_hcd uhci_hcd usbcore i2c_i810
i2c_algo_bit i2c_core<BR>CPU: 0<BR>EIP:
0060:[<e0a0773d>] Not tainted VLI<BR>EFLAGS:
00010212 (2.6.17.11-3tr #1) <BR>EIP is at
ip_nat_reserved_unregister_all+0x2c/0x6f [ip_nat]<BR>eax: d76146e8
ebx: d76146f0 ecx: 00000000 edx: 00003f06<BR>esi:
d76146f0 edi: d7614630 ebp: e0a04e20 esp:
c0345cf0<BR>ds: 007b es: 007b ss: 0068<BR>Process
swapper (pid: 0, threadinfo=c0344000 task=c02eef80)<BR>Stack: d7614630 d7614630
d7614694 e09f883e d7614630 d7614630 e09f962f d7614630
<BR> d7614630 d76a305c e09f50a0 d7614630
df6d0f40 d76a3000 00000000 0000002d <BR>
c213e7dc c034e103 a658a8c0 c02f3f06 d76a305c d7614694 c0345d78 e0a03053 <BR>Call
Trace:<BR> <e09f883e> ip_ct_unlink_expect+0x34/0x3f
[ip_conntrack] <e09f962f> ip_conntrack_unexpect_related+0xbb/0xdb
[ip_conntrack]<BR> <e09f50a0> pptp_nat_expected+0xa0/0x153
[ip_nat_pptp] <c034e103>
init_cyrix+0xcb/0x29c<BR> <e0a03053> pptp_expectfn+0x53/0x5a
[ip_conntrack_pptp] <e09f8989> find_expectation+0x87/0x98
[ip_conntrack]<BR> <e09f935c> init_conntrack+0xf9/0x112
[ip_conntrack] <c034e103>
init_cyrix+0xcb/0x29c<BR> <e09f9453> ip_conntrack_in+0xde/0x1de
[ip_conntrack] <e08ba69f> br_nf_pre_routing_finish+0x0/0x2a5
[bridge]<BR> <c0262a80> nf_iterate+0x3f/0x5f <e08ba69f>
br_nf_pre_routing_finish+0x0/0x2a5 [bridge]<BR> <c0262ae7>
nf_hook_slow+0x47/0xa7 <e08ba69f> br_nf_pre_routing_finish+0x0/0x2a5
[bridge]<BR> <e08b76e2> br_handle_frame_finish+0x0/0xe0
[bridge] <e08baf03> br_nf_pre_routing+0x2f4/0x312
[bridge]<BR> <e08ba69f> br_nf_pre_routing_finish+0x0/0x2a5
[bridge] <c0262a80> nf_iterate+0x3f/0x5f<BR> <e08b76e2>
br_handle_frame_finish+0x0/0xe0 [bridge] <c0262ae7>
nf_hook_slow+0x47/0xa7<BR> <e08b76e2> br_handle_frame_finish+0x0/0xe0
[bridge] <e08b7921> br_handle_frame+0x133/0x162
[bridge]<BR> <e08b76e2> br_handle_frame_finish+0x0/0xe0
[bridge] <c025506c>
netif_receive_skb+0x149/0x1f9<BR> <e09dc8eb>
e100_rx_indicate+0x128/0x14b [e100] <e09dc949>
e100_rx_clean+0x3b/0xdf [e100]<BR> <e09dcc13> e100_poll+0x33/0xab
[e100] <c025524c> net_rx_action+0x59/0xbf<BR> <c0116e3c>
__do_softirq+0x34/0x7d <c0116ea7>
do_softirq+0x22/0x26<BR> <c01049c7> do_IRQ+0x47/0x4f
<c01033ca> common_interrupt+0x1a/0x20<BR> <c0100ab7>
default_idle+0x2b/0x53 <c0100b2c>
cpu_idle+0x39/0x4e<BR> <c034660a> start_kernel+0x180/0x182 <BR>Code:
56 53 b8 00 e0 ff ff 8b 7c 24 10 21 e0 81 40 14 00 01 00 00 8b 77 5c 8d 47 5c 39
c6 74 48 8d 46 f8 8b 36 8b 48 04 8b 10 8d 58 08 <89> 4a 04 89 11 c7 40 04
00 02 20 00 8b 50 08 8b 4b 04 c7 00 00 <BR>EIP: [<e0a0773d>]
ip_nat_reserved_unregister_all+0x2c/0x6f [ip_nat] SS:ESP
0068:c0345cf0<BR> <0>Kernel panic - not syncing: Fatal exception in
interrupt</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>
<DIV>It is seem crash by <FONT face=Arial size=2>nat reserved, so I disable NAT
reservations in kernel config and recompile it then test it again,</FONT></DIV>
<DIV><FONT face=Arial size=2>It will not be crash, but I don't konw if tproxy
will work well without 01-nat_reservations?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>// Zhou Li</FONT></DIV><A
href="mailto:zhou.li@ca-jc.com"></A></FONT></DIV></BODY></HTML>