Date: Thu, 16 Jan 2003 23:09:16 -0500 (EST) From: Trevor Johnson <trevor@jpj.net> To: current@FreeBSD.ORG, <alpha@FreeBSD.ORG> Subject: Re: unexpected machine check on 5.0 alpha Message-ID: <20030116212057.A60768-100000@blues.jpj.net> In-Reply-To: <15910.50391.473362.53094@grasshopper.cs.duke.edu>
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Andrew Gallatin wrote: > No, that's a 660. (system machine check). > A 670 is much more likely to be bad ram, bad cache, bad CPU, etc. > Its not always overheating. It's looking like at least my troubles are not from FreeBSD, but from the hardware, probably the SCSI card. I tried "dd if=/dev/zero of=/dev/da3" and got a pair of 670 machine checks, shown below. After I pressed the reset button, the SRM said "I/O-detected PCI bus data parity error on IOD0" just after looking at the Symbios SCSI card to which the hard drives are attached (I had gotten this before, when I had tried replacing the Ethernet card). Then there was a 660 machine check, then the SRM crashed--<URL:http://people.freebsd.org/~trevor/alpha/4100-20030116-cu2.log>. -- begin log -- (noperiph:sym1:0:-1:-1): SCSI BUS reset detected. sym1: unable to abort current chip operation. unexpected machine check: mces = 0x1 vector = 0x670 param = 0xfffffc0000004e10 pc = 0xfffffc0000642970 ra = 0xfffffc0000406f70 curproc = 0xfffffc001f169200 pid = 23, comm = intr: sym1 panic: machine check cpuid = 1; boot() called on cpu#1 syncing disks, buffers remaining... panic: bwrite: buffer is not busy??? cpuid = 1; boot() called on cpu#1 Uptime: 1h42m51s (noperiph:sym1:0:-1:-1): SCSI BUS reset detected. sym1: unable to abort current chip operation. unexpected machine check: mces = 0x1 vector = 0x670 param = 0xfffffc0000004e10 pc = 0xfffffc0000642970 ra = 0xfffffc0000406f70 curproc = 0xfffffc001f169200 pid = 23, comm = intr: sym1 panic: machine check cpuid = 1; boot() called on cpu#1 Uptime: 1h42m53s panic: bremfree: removing a buffer not on a queue cpuid = 1; boot() called on cpu#1 Uptime: 1h43m16s sym1: suspicious SCSI data while resetting the BUS. sym1: dp1,d15-8,dp0,d7-0,rst,req,ack,bsy,sel,atn,msg,c/d,i/o = 0x7ffffff, expecting 0x100 -- end log -- -- Trevor Johnson To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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