Date: Sun, 9 Aug 2009 21:51:37 +0100 (BST) From: Robert Watson <rwatson@FreeBSD.org> To: Rick Macklem <rmacklem@uoguelph.ca> Cc: FreeBSD current <freebsd-current@freebsd.org>, Thomas Backman <serenity@exscape.org> Subject: Re: nmap UDP scan against 8.0-CURRENT -> fatal trap 12 Message-ID: <alpine.BSF.2.00.0908092150550.36842@fledge.watson.org> In-Reply-To: <Pine.GSO.4.63.0908091546510.5263@muncher.cs.uoguelph.ca> References: <598778D3-AE7B-47AF-A4F9-0D832BC1A990@exscape.org> <Pine.GSO.4.63.0908091421360.18198@muncher.cs.uoguelph.ca> <00694EF2-9BBC-4733-91C7-A6AE973D8973@exscape.org> <Pine.GSO.4.63.0908091546510.5263@muncher.cs.uoguelph.ca>
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On Sun, 9 Aug 2009, Rick Macklem wrote: >> Initial results are certainly good! :-) Pre-patch, it panicked three times >> in a row, as I said within a few seconds. Post-patch I've looped the >> simpler scan for a while (10 minutes, or about 8-9 runs) with no crash, and >> I also ran the more extensive one (which I doubt makes any difference...) >> once. Just for fun, I tried actually using nfsd while looping the scan, >> too. No problems. >> > Ok, sounds good. It's already in the re@ queue, so it should make it into > 8.0. If it does crap out again, please let the list (and me) know. > > Thanks for testing the patch, rick ps: Thanks mostly goes to pho@ for his > "wicked" test scripts that found the crash that the above patch fixes + a > bunch of others. It sounds a bit like we would benefit from some directed RPC fuzzing on the NFS client and server. I wonder if an existing fuzzer could easily be adapted to generate RPC-like garbage? Robert N M Watson Computer Laboratory University of Cambridge
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