From owner-freebsd-questions Tue Apr 4 08:44:43 1995 Return-Path: questions-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id IAA14382 for questions-outgoing; Tue, 4 Apr 1995 08:44:43 -0700 Received: from nosferatu.cas.usf.edu (nosferatu.cas.usf.edu [131.247.31.155]) by freefall.cdrom.com (8.6.10/8.6.6) with ESMTP id IAA14376 for ; Tue, 4 Apr 1995 08:44:39 -0700 Received: (mephisto@localhost) by nosferatu.cas.usf.edu (8.6.8/8.3) id LAA00230; Tue, 4 Apr 1995 11:55:53 -0500 Date: Tue, 4 Apr 1995 11:55:53 -0500 (EST) From: NatureBoy To: David Greenman cc: questions@FreeBSD.org Subject: tcpdump and kernel panics In-Reply-To: <199504032321.QAA02959@corbin.Root.COM> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: questions-owner@FreeBSD.org Precedence: bulk I am running a machine built with a snapshot of current from 3/24/95. If I aim tcpdump at a busy machine on on our ethernet I can produce a kernel panic fairly reliably. the panic message; Fatal trap 12 page fault while in kernel mode fault virtual address = 0xf053bfe fault code = supervisor write, page not present instruction pointer = 0x8:0xf0187dbe code segment = base 0x0, limit 0xfffff,type 0x1b DPL 0, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, resume, IOPL=0 current process = Idle interupt mask = net panic: page fault The machine I'm running is a generic isa bus 486 with an smc nic (WD8013EPC chipset). A kernel sources diff between the 3/22 snapshot and what I'm running is at ftp://ftp.cas.usf.edu/diff/snap_diffs. There appear to have been some vm changes in the 2 days between the snapshot and my grabbing the sources I am using. thanx Joseph Orthoefer