Hello Michael, I wasn't able to reproduce in my setup with running openvas-scanner as a non-root user. I see these messages in openvassd.dump,
Failed to find interface eth0 mentioned in /proc/net/route Can you enable TCPIP_DEBUGGING and let us know if the value is NULL and if you add a NULL check, does it solve the problem? I am suspecting something specific to the system IP address config or the route entries. Thanks, Chandra. > -----Original Message----- > From: openvas-devel-boun...@wald.intevation.org > [mailto:openvas-devel-boun...@wald.intevation.org] On Behalf > Of Michael Wiegand > Sent: Wednesday, November 18, 2009 8:38 PM > To: OpenVAS Development Mailing List > Subject: [Openvas-devel] Segfault in IPv6 Code > > Hello, > > I was using the most recent SVN versions of openvas-libraries > and -scanner yesterday and discovered a large amount of > following messages in my openvassd.dump during a full scan: > Failed to find interface eth0 mentioned in /proc/net/route > > And in my openvassd.messages, some thirty messages indicating > segmentation faults in NVTs: > [27687] SIGSEGV occured ! > [30820] Process 27687 seems to have died too early [30820] > process_internal_msg for jolt2.nasl returned -1 > > I suspected the source in openvas-libraries/misc/pcap.c since > the message in openvassd.dump seemed to originate there. Sure > enough, when I reverted both -libraries and -scanner to SVN > revision 5827 (before the latest big changes to the file in > the course of the IPv6 patch), the messages were gone. > > Together with Michael Meyer I debugged the issue and > discovered that the issue seems to be indeed in pcap.c and > can be reproduced consistently with: > openvas-nasl -X -t <target> /your/path/to/jolt2.nasl > > At least on my machine; the segfault does not seem to show up > everywhere. FWIW, I'm running openvas-scanner as a non-root > user in an IPv4 network. > > I have attached a backtrace of the segfault and both logs; > there core issue seems to be v6_routethrough() trying to > memcpy a null pointer on line 1222 of pcap.c. > > Let me know if you need more information, I'm looking forward > to a bugfix. ;) > > Regards, > > Michael > > -- > Michael Wiegand | OpenPGP: D7D049EC | Intevation GmbH - > www.intevation.de > Neuer Graben 17, 49074 Osnabrück, Germany | AG > Osnabrück, HR B 18998 > Geschäftsführer: Frank Koormann, Bernhard Reiter, Dr. > Jan-Oliver Wagner > _______________________________________________ Openvas-devel mailing list Openvas-devel@wald.intevation.org http://lists.wald.intevation.org/mailman/listinfo/openvas-devel
