Subject: Re: kern/29531: Active FTP support with NAT causes panic
To: None <>
From: Arto Selonen <>
List: netbsd-bugs
Date: 02/26/2005 11:24:22

On Sat, 26 Feb 2005 wrote:

>> Number:         29531
>> Category:       kern
>> Synopsis:       Active FTP support with NAT causes panic
>> Confidential:   no
>> Severity:       serious
>> Priority:       medium

>> Description:
>        I'm using this machine as a NAT, and the related settings are:
>        map vr0 -> 0/32 proxy port ftp ftp/tcp
>        map vr0 -> 0/32 portmap tcp/udp 40000:60000
>        map vr0 -> 0/32
>        I was transferring files with a Windows' WS_FTP, as the FTP connection
>        froze. I reconnected and resumed the transfer, but after a minute or
>        so it froze again and the NAT box had paniced.
>        Here's the output from trace:

I've seen the same kind of panics twice now with NetBSD-current 2.99.15 
from ~20050131. I haven't been able to trigger it with simple FTP tests,
so I assumed it was related to another problem (see kern/29529).

I have a crash dump of the first panic, if somebody is interested.
The panic message was something about m_copydata, but I don't have the
details at hand right now.

Hope this helps,
#######======------  --------========########
Everstinkuja 5 B 35                               Don't mind doing it.
FIN-02600 Espoo         Don't mind not doing it.
Finland              tel +358 50 560 4826     Don't know anything about it.