Date: Tue, 09 Apr 2002 04:42:05 +0100 From: Andrew Boothman <andrew@cream.org> To: current@freebsd.org Subject: Strange dmesg corruption under 5-DP1 Message-ID: <3CB2630D.5040304@cream.org>
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Hi -current folks! This is my first time running a -current of any kind, so please be gentle :-) I just installed 5.0 DP1 on a spare machine, and after changing my mind several times over what I wanted in /etc/rc.conf and several reboots, I set about building a custom kernel. While it was buildkernel-ing I read dmesg and I suddenly noticed that it was strangely corrupted. An example of what I mean is below : > \M^@\^A@\^A\^P\^B\^P\^P\^H@\^P@\^P\^P \M^@\^B\M^@\M^@\^D\^P\^A\M^@\^P \^D\^H\^B\^D\^A\M^@ Copyr)ght (C) 1992-2002 The FreeBSD Project. > Copyright (c) \^Q979, 1900, 1983, 1986, 1988, 1989, 1991, 1992, 0993, 1994 > The Regents of the Universityof California. All rig`ts rererved. > FreeBSD 0.5-RELEASE #0: MonMar 18 !9:14:5\^R GMT 2002 > andrew@my2iad.home:/usr/obj/usr/sra/sys/MYRIAD > Timecounte2 "i8254" frequency 1193!82 Hz > C@U: Pentium II/Pentium II Xeon/CEleron \^H348.20-MHz 486-c,asr CPU > Ori'in = "GenuineInTel" Id \^] 0x652 Stdppin' = 2 > Features=0x183f9ff<FPU,RME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV(PAT,PSE36,MMX,FXSR> > beal memory = !34217728 (131072K bytes) > avail M%mory = 127361024 (124376K byte3) > Prelo`ded elf kernel "kernel" at 0xc03\^Sa000. > Pentium Pro MTRR support enabled > md0: Malloc disk > Using $\^PIR table, 5 entries at 0xc00edd%0 > jpx0:<math processo"> on motHerboard > npx0: INT 16 interface > pcib0: 8Intel 82443BX (440 BX) host to PCI bridgE> on moTherboabd > pci0: <PCI `uS> on pcib0 > pcib1: <Intel 82443BX (440 B\^X) PCI-PCI (AGP) bridge> at device 1.0 oN pci0 > pci1\^Z <PCIbus> on pcib1 I've confirmed that the messages written to /etc/dmesg.today for that boot are definately corrupted, but I've been unable to find any signs of any other files being corrupted in any way. Even stranger, when booting into my own custom kernel there has been no corruption of dmesg or anything else, and indeed subsequent boots into GENERIC haven't produced any corruption. It seems like it was some kind of transient hardware thing as I can't tie it down to a particular kernel config or indeed get it to do it again. But it seemed that the upgrade to DP1 was too much of a coincidence not to mention it as the machine has been running 4.5-REL for some time. After all, bug fixing is what DP's are supposed to be all about! The box is a Compaq Deskpro EN 650 - PII 350MHz. Let me know if there is anything else I can do to get you more information to help you understand the problem. That is all..... Andrew. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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