Date: Mon, 17 Mar 2003 18:50:05 EST From: Andrea Venturoli <ml.ventu@flashnet.it> To: freebsd-questions@freebsd.org Subject: bpf -> kernel panic Message-ID: <200303171750.h2HHo6Ku001382@soth.ventu>
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Hello.
I have a FreeBSD machine that tended to hang in the recent past. After a few tests I managed to clearly isolate one
condition that causes this kernel panics.
If I do a "tcpdump -l -i fxp0" I'm sure the machine will lock in less than 3 second.
The same happens (in a more or less short time) if I run ntop, snort or any other thing that opens a bpf.
There is a dhcp server running, which is isc version 3.0.1.r11_1 and, on startup, says:
>Listening on BPF/fxp0/00:07:e9:0b:78:d9/192.168.101.0/24
>Sending on BPF/fxp0/00:07:e9:0b:78:d9/192.168.101.0/24
So, basically one bpf seems to work. A second one is, however, almost sure death: I didn't have the chance to write
down the full exact message yet, but basically it's like "page fault while in kernel mode".
uname -a gives:
>FreeBSD xxx 4.7-RELEASE-p6 FreeBSD 4.7-RELEASE-p6 #1: Thu Feb 27 1
>2:40:24 CET 2003 root@xxx:/usr/src/sys/compile/XXX i386
Any hint on what I might try to solve this?
Has anyone had this problem before?
Any way to better debug this?
bye & Thanks
av.
P.S. In case it matters, the machine has two fxp interfaces.
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