netfilter buglog - Apr 2014 - [Bug 917] New: Kernel OOPS on Kernel 3.14.2

https://bugzilla.netfilter.org/show_bug.cgi?id=917

           Summary: Kernel OOPS on Kernel 3.14.2
           Product: netfilter/iptables
           Version: unspecified
          Platform: x86_64
        OS/Version: Debian GNU/Linux
            Status: NEW
          Severity: critical
          Priority: P5
         Component: NAT
        AssignedTo: netfilter-buglog at lists.netfilter.org
        ReportedBy: netfilter at fd.mytrap.de
   Estimated Hours: 0.0


Hi,

I hope this is the correct bug trac for my problem.

I recently installed kernel 3.14.2 since then, my computer crashes after a
while (mostly after 5-10h)

Since the kernel traces always show something about netfilter (ipt_MASQUERADE,
iptable_nat, ...) I think about a bug.

The attached the display image of one of the kernel traces.

My hardware:
Intel i7 2600, 32GB RAM

My iptables rules:
```
# Generated by iptables-save v1.4.12 on Wed Apr 30 08:32:15 2014
*mangle
:PREROUTING ACCEPT [120268:39582217]
:INPUT ACCEPT [97074:20313634]
:FORWARD ACCEPT [23188:19268180]
:OUTPUT ACCEPT [78654:99152988]
:POSTROUTING ACCEPT [102502:118656625]
-A FORWARD -o eth1 -p tcp -m tcp --tcp-flags SYN,RST SYN -m tcpmss --mss
1400:1536 -j TCPMSS --clamp-mss-to-pmtu
COMMIT

# Completed on Wed Apr 30 08:32:15 2014
# Generated by iptables-save v1.4.12 on Wed Apr 30 08:32:15 2014
*nat
:PREROUTING ACCEPT [1969:200322]
:INPUT ACCEPT [1521:108728]
:OUTPUT ACCEPT [3534:337479]
:POSTROUTING ACCEPT [1075:141120]
:UPNP - [0:0]
-A PREROUTING -j UPNP
-A POSTROUTING -o eth1 -j MASQUERADE
COMMIT

# Completed on Wed Apr 30 08:32:15 2014
# Generated by iptables-save v1.4.12 on Wed Apr 30 08:32:15 2014
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:TCP - [0:0]
:UDP - [0:0]
:UPNP - [0:0]

-A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A INPUT -m conntrack --ctstate INVALID -j DROP
-A INPUT -i lo -j ACCEPT
-A INPUT -s 10.0.0.0/8 -i eth0 -j LOG --log-prefix "fw-in   "
-A INPUT -s 10.0.0.0/8 -i eth0 -j REJECT --reject-with icmp-port-unreachable
-A INPUT -i eth0 -j ACCEPT
-A INPUT -p icmp -m icmp --icmp-type 8 -m conntrack --ctstate NEW -j ACCEPT
-A INPUT -p udp -m conntrack --ctstate NEW -j UDP
-A INPUT -p tcp -m tcp --tcp-flags FIN,SYN,RST,ACK SYN -m conntrack --ctstate
NEW -j TCP
-A INPUT -m limit --limit 1/sec -j LOG --log-prefix "fw-in   "
-A INPUT -p udp -j REJECT --reject-with icmp-port-unreachable
-A INPUT -p tcp -j REJECT --reject-with tcp-reset
-A INPUT -p ipv6 -j REJECT --reject-with icmp-proto-unreachable
-A INPUT -j REJECT --reject-with icmp-proto-unreachable

-A FORWARD -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
-A FORWARD -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -m conntrack --ctstate INVALID -j DROP
-A FORWARD -i eth0 -o eth1 -j ACCEPT
-A FORWARD -j UPNP
-A FORWARD -m limit --limit 1/sec -j LOG --log-prefix "fw-fwd  "
-A FORWARD -p udp -j REJECT --reject-with icmp-port-unreachable
-A FORWARD -p tcp -j REJECT --reject-with tcp-reset
-A FORWARD -p ipv6 -j REJECT --reject-with icmp-proto-unreachable
-A FORWARD -j REJECT --reject-with icmp-proto-unreachable

-A OUTPUT -p ipv6 -j LOG --log-prefix "fw-o41  "
-A OUTPUT -p ipv6 -j REJECT --reject-with icmp-proto-unreachable
-A OUTPUT -o lo -j ACCEPT
-A OUTPUT -o eth0 -j ACCEPT
-A OUTPUT -o eth1 -j ACCEPT
-A OUTPUT -m limit --limit 1/sec -j LOG --log-prefix "fw-out  "
-A OUTPUT -p udp -j REJECT --reject-with icmp-port-unreachable
-A OUTPUT -p tcp -j REJECT --reject-with tcp-reset
-A OUTPUT -j REJECT --reject-with icmp-proto-unreachable

-A TCP -i eth1 -p tcp -m tcp --dport 22 -j ACCEPT
-A TCP -i eth1 -p tcp -m tcp --dport 23 -j REJECT --reject-with
icmp-port-unreachable
-A TCP -i eth1 -p tcp -m tcp --dport 53 -j ACCEPT
-A TCP -i eth1 -p tcp -m tcp --dport 80 -j ACCEPT
-A TCP -i eth1 -p tcp -m tcp -j UPNP
-A TCP -j RETURN

-A UDP -i eth1 -p udp -m udp --dport 53 -j ACCEPT
-A UDP -i eth1 -p udp -m udp -j UPNP
-A UDP -j RETURN
COMMIT
# Completed on Wed Apr 30 08:32:15 2014
```

Since the crashes are not recorded on disk/logfile, I can only provide that
image.

Thank you!

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https://bugzilla.netfilter.org/show_bug.cgi?id=917

--- Comment #1 from Flow86 <netfilter at fd.mytrap.de> 2014-04-30 08:39:28
CEST ---
Created attachment 441
  --> https://bugzilla.netfilter.org/attachment.cgi?id=441
Photo of Kernel Trace

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https://bugzilla.netfilter.org/show_bug.cgi?id=917

Flow86 <netfilter at fd.mytrap.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |netfilter at fd.mytrap.de

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