Date: Tue, 9 Nov 2004 23:33:15 +0000 (GMT) From: Robert Watson <rwatson@freebsd.org> To: Arjan Van Leeuwen <avleeuwen@gmail.com> Cc: freebsd-stable@freebsd.org Subject: Re: Panic in 5.3, related to network traffic Message-ID: <Pine.NEB.3.96L.1041109233152.60848S-100000@fledge.watson.org> In-Reply-To: <d86b48730411091235148ad354@mail.gmail.com>
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On Tue, 9 Nov 2004, Arjan Van Leeuwen wrote: > I updated my server at home from a -CURRENT from june 7 to 5.3-RELEASE, > and now I'm seeing this panic whenever someone behind this gateway > starts emule and opens a lot of connections: > > http://www.piwebs.com/freebsd/pagefault-network.jpg > > The panic doesn't occur with the -CURRENT kernel from june 7. Setting > debug.mpsafenet=0 doesn't help. > > Does anyone have a suggestion on how to avoid this panic? > > The panic is very well reproduceable, so if you need more details, > please tell me what to do. For now, I'll just downgrade to an older > -CURRENT. Could you send a copy of your dmesg? Could you also use gdb on a kernel with debug symbols or addr2line to convert the function+offsets in the trace to file and line number in the source? This is a NULL pointer dereference, so presumably somewhere there is a poor assumption about memory allocation or the like. Thanks, Robert N M Watson FreeBSD Core Team, TrustedBSD Projects robert@fledge.watson.org Principal Research Scientist, McAfee Research
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