Brian thanks for your report. I do not have the ability to reproduce the crash you reported using the code in SVN (this is the only version I can support). Can you please crash ntop, generate a core and analyze it a bit so that I can understand where the problem could be? Before doing that, please resync with SVN.
Thanks for your support Luca On Nov 4, 2011, at 5:09 PM, Brian Behrens wrote: > Hello, > > I have been working for days trying to resolve a segfault issue like the > following: > > Nov 4 10:46:54 NTOP-SC kernel: ntop[25479]: segfault at 645 ip > 00007f95f3cf3395 sp 00007f95e9b75ae8 error 6 in > libntop-4.1.1.so[7f95f3cb9000+56000] > > The environment is an ESX 5 VM. > > Guest OS I have tried: > > 1. CentOS 6 > 2. Fedora 15 > 3. Network Security Toolkit (uses 4865 of the current dev tree) > > Versions I have tried: > > 1. Current dev tree. > 2. Current stable version (4.1.0) > > The times variate on where these faults occur, but it is relevant to network > load factors. > > My test networks: > > 1. Simple home network with all packets going to NTOP. > 2. High load work network that can see 25 Gig in 15 mins. > > The most stable I have seen is a clean CentOS install, build ntop from trunk > tree, install and run. > > The quickest segfault I can obtain is when I implement PF_RING, use a e1000 > card in the vm, and use the pf_ring aware e1000 driver. Can get a segfault > usually within 30 mins on the busy network. > > The common theme is the segfaulting. I did attempt a gdb on the device one > time and saw a malloc issue, but all these VMs have 4GB memory and I have > tried tuning different hash sizes to see how this impacts the issue, but it > really never does. Use smaller hash values, and I get more messages of low > memory, etc. > > I am really not sure what else to do, if there is anything I can do to > present more information, please let me know as I would like to stop this > incessant segfaulting. > > > > > > > _______________________________________________ > Ntop-misc mailing list > [email protected] > http://listgateway.unipi.it/mailman/listinfo/ntop-misc --- We can't solve problems by using the same kind of thinking we used when we created them - Albert Einstein _______________________________________________ Ntop-misc mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop-misc
