[Snort-users] Seg fault with latest pf_ring git

Y M snort at ...15979...
Tue Nov 1 15:35:52 EDT 2016


Always happy to help, James.


Odd that suricata works. Just a couple of notes which may not be related. I see that you did not compile the pf_ring driver (cd drivers/PF_RING_aware/intel/<igb|igbxe>/<version>/src && sudo make install). Since part of the error is "pfring_get_card_settings()", maybe this is related? A second note is that the "min_num_slots" while loading the pfring kernel module, "I believe", is no longer required, which is obviously not related to your issue.


I guess Luca is already on top of it.


YM

________________________________
From: James Lay <jlay at ...13475...>
Sent: Tuesday, November 1, 2016 10:19:35 PM
To: Y M
Cc: Snort
Subject: Re: [Snort-users] Seg fault with latest pf_ring git

Thanks YM....you're willingness to help always impresses me :)  As for
pf_ring, this was just a git pull...which...is apparently like..uber
fresh:

commit aa5bf8f7d0662d411465895b8ee8fe8935084a6f
Author: Luca Deri <deri at ...8215...>
Date:   Tue Nov 1 10:53:58 2016 +0100

This is just a dev box, so I can wait until it's fixed...oddly, suricata
tests fine:

/opt/suricata/etc/suricata$] sudo suricata --pfring-int=eth0
--pfring-cluster-id=99 --pfring-cluster-type=cluster_flow -T -c
/opt/suricata/etc/suricata/suricata.yaml
1/11/2016 -- 12:13:38 - <Info> - Running suricata under test mode
1/11/2016 -- 12:13:38 - <Notice> - This is Suricata version 3.1.3
RELEASE
1/11/2016 -- 12:13:47 - <Notice> - Configuration provided was
successfully loaded. Exiting.


pfring config steps:

git clone https://github.com/ntop/PF_RING.git
cd PF_RING/kernel
make
sudo make install

cd ../userland/lib
./configure --prefix=/opt/pfring
sudo make install

cd ../libpcap
./configure --prefix=/opt/pfring
sudo make install

cd ../tcpdump
./configure --prefix=/opt/pfring
sudo make install

cd ../userland/snort/pfring-daq-module
autoreconf -ivf
./configure --with-libpfring-includes=/opt/pfring/include
--with-libpfring-libraries=/opt/pfring/lib
make
sudo cp .libs/daq_pfring.so /usr/local/lib/daq/

modprobe pf_ring enable_tx_capture=1 min_num_slots=32768

snort config line:
./configure --prefix=/opt/snort --enable-non-ether-decoders
--enable-sourcefire --enable-shared-rep --enable-control-socket
--enable-open-appid --with-libpcap-includes=/opt/pfring/include
--with-libpcap-libraries=/opt/pfring/lib
--with-libpfring-includes=/opt/pfring/include
--with-libpfring-libraries=/opt/pfring/lib

Thanks again.

James

On 2016-11-01 12:44, Y M wrote:
> A long shot at this, but were all the pf_ring modules (driver,
> kernel, pfring libpcap, pfring daq) compiled and installed from the
> recent source? If you revert back to the stable version (apt/yum
> install), does it work? You can also try uninstalling then make clean
> and make distclean, and recompile again.
>
> YM
> -------------------------
>
> FROM: James Lay <jlay at ...13475...>
> SENT: Tuesday, November 1, 2016 9:03:38 PM
> TO: Snort
> SUBJECT: [Snort-users] Seg fault with latest pf_ring git
>
> Topic says it.  Config test run:
>
> sudo snort --daq-dir=/usr/local/lib/daq --daq pfring  -T -c
> /opt/snort/etc/snort.conf
>
> backtrace:
>
> #0  0x00007ffff6b681a8 in pfring_get_card_settings () from
> /opt/pfring/lib/libpcap.so.1
> #1  0x00007fffb626cf47 in pfring_daq_initialize (config=<optimized
> out>,
> ctxt_ptr=0xf109d0 <daq_hand>, errbuf=0x7fffffffe3c0 "", len=256) at
> daq_pfring.c:491
> #2  0x0000000000464050 in DAQ_Config (cfg=0x7fffffffe4f0) at
> sfdaq.c:515
> #3  0x0000000000464183 in DAQ_New (sc=0x16879f0, intf=0x557e05 "") at
> sfdaq.c:553
> #4  0x000000000043ba5d in SnortMain (argc=7, argv=0x7fffffffe678) at
> snort.c:875
> #5  0x000000000043b9b3 in main (argc=7, argv=0x7fffffffe678) at
> snort.c:836
>
> sudo snort --daq-dir=/usr/local/lib/daq --daq-list
> Available DAQ modules:
> pfring(v1): live inline multi unpriv
> pcap(v3): readback live multi unpriv
> ipfw(v3): live inline multi unpriv
> dump(v3): readback live inline multi unpriv
> afpacket(v5): live inline multi unpriv
>
> Not sure of my next step.
>
> James
>
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