Date: Sun, 21 Jan 2001 21:20:09 -0800 From: "Craig Burgess" <craig-burgess@home.net> To: <cjclark@alum.mit.edu> Cc: <stable@FreeBSD.ORG> Subject: RE: dmesg/security check output wierdness Message-ID: <GHEGJJOKGFNJDIHBHOIDGELECEAA.craig-burgess@home.net> In-Reply-To: <20010121143324.U10761@rfx-216-196-73-168.users.reflex>
next in thread | previous in thread | raw e-mail | index | archive | help
This is a bit different but from what you have written, may I assume that the msg poses (below) no threat? It's the first I've seen it and it appeared on first boot after kernel build (following CVSUP for ports & source and make world) >>Jan 21 20:25:51 Felix /kernel: file: table is full or is this another matter entirely? If I need to do something about it, what? One strangeness was that the machine "spontaneously" denied permission to ping even localhost until i had rebuilt the kernel, even though it worked for about 8 hours after 'make installworld' but running on the "old" kernel (4.1.1) - no reboot following installworld. Here's what I'm running now: FreeBSD Felix 4.2-STABLE FreeBSD 4.2-STABLE #8: Sun Jan 21 17:57:41 PST 2001 craig@Felix:/usr/src/sys/compile/FELIX alpha mostly the machine is a very large and underworked natd/firewall which seems to be running okay. thanks, craig -----Original Message----- From: owner-freebsd-stable@FreeBSD.ORG [mailto:owner-freebsd-stable@FreeBSD.ORG]On Behalf Of Crist J. Clark Sent: Sunday, January 21, 2001 2:33 PM To: David Goddard Cc: stable@FreeBSD.ORG Subject: Re: dmesg/security check output wierdness On Sun, Jan 21, 2001 at 04:10:10PM +0000, David Goddard wrote: > I've recently noticed some odd entries in my security check output mail > from a couple of 4.2-STABLE machines, so I did some digging. The > following is one example: > > [Date: Sun, 21 Jan 2001 03:18:15 +0000] > cassium.mydomain.com kernel log messages: > > 06 cleared. [snip] > Any ideas? The dmesg(8) is stored in a finite buffer. Once full, as more stuff gets shoved in, other stuff falls out (really it gets overwritten, it's a circular buffer, but same thing). The stuff that falls out, does not do so all that gracefully. That is, it does not get dropped whole lines at a time. For example, $ dmesg | head -5 0.1.35:427 in via de0 ipfw: 11500 Deny UDP AAA.BBB.153.173:137 AAA.BBB.153.255:137 in via de0 ipfw: 11500 Deny UDP AAA.BBB.153.173:137 AAA.BBB.153.255:137 in via de0 ipfw: 11500 Deny UDP AAA.BBB.153.173:137 AAA.BBB.153.255:137 in via de0 ipfw: 11500 Deny UDP AAA.BBB.153.173:427 224.0.1.35:427 in via de0 Notice the first line. Now, I do something to make a little noise in the dmesg buffer and check again, $ dmesg | head -5 .255:137 in via de0 ipfw: 11500 Deny UDP AAA.BBB.153.173:137 AAA.BBB.153.255:137 in via de0 ipfw: 11500 Deny UDP AAA.BBB.153.173:137 AAA.BBB.153.255:137 in via de0 ipfw: 11500 Deny UDP AAA.BBB.153.173:427 224.0.1.35:427 in via de0 ipfw: 11500 Deny ICMP:10.0 AAA.BBB.153.173 224.0.0.2 in via de0 Now, as for the '10>' or similar constructions you sometimes see popping up on the first line. Have a look at, $ sysctl machdep.msgbuf dmesg(8) strips the leading <number> off of the lines when printing it for you. But if one of these is cut in the middle... You get the picture. -- Crist J. Clark cjclark@alum.mit.edu To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?GHEGJJOKGFNJDIHBHOIDGELECEAA.craig-burgess>