Re: kernel crash in nf_nat_move_storage

[Thomas Woerner <twoerner@redhat.com>]

2.6.24 seems to be ok on i386 also, but on x86_64 it is crashing.

Thomas Woerner wrote:
> Hello Patrick,
> 
> after sucessfully testing 2.6.23.14-107.fc8 on my i386 test system, I 
> installed 2.6.23.14-107.fc8 on the x86_64 system. At first I was not 
> able to reproduce the problem, but after starting the ftp server 
> (vsftpd) and using 'echo "quit" | telnet test-x86_64 80' several times, 
> I got a backtrace again. Please have a look at the attachment.
> 
> Thanks,
> Thomas
> 
> Patrick McHardy wrote:
>> Thomas Woerner wrote:
>>> Hello,
>>>
>>> Using port forwarding from port 80 to 21 with nf_conntrack_ftp loaded 
>>> results in a kernel crash, when connecting to port 80 from a remote
>>> host. This seems to be a problem for kernels > 2.6.18 including 2.6.24.
>>>
>>> Steps to Reproduce:
>>>
>>> host1> iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j 
>>> DNAT --to :21
>>> host1> iptables -t filter -A INPUT -i eth0 -m state --state NEW -m 
>>> tcp -p tcp --dport 21 -j ACCEPT
>>> host1> modprobe ip_conntrack_ftp
>>> host2> telnet host1 80
>>>
>>> Attached is the kernel crash log for kernel 2.6.23.9-85.fc8PAE. I was 
>>> told that this kernel crash dump is incomplete, but it took several 
>>> attempts to get a log with more that 5 lines over serial console. The 
>>> kernel seems to die too fast.
>>
>>
>> This is already fixed in 2.6.23.10.
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> 
> 


-- 
Thomas Woerner
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