K6 sig11 Bug detection.

James Nord (teilo@cdt.luth.se)
Fri, 17 Aug 2001 12:13:20 +0200


Hi,

I have a Debian based system with a custom 2.4.7 kernel compiled with
gcc version 2.95.4 20010703 (Debian prerelease)
(also saw the same with 2.2.10+ gcc 2.95)

The CPU in the machine is a AMD K6 200MHz, and has 64MB of SDRAM

I reomved the heatsink and the serial is Cxxxxxxxx, however in the
kernel boot messages I get the following,

Aug 17 09:06:49 phoenix kernel: CPU: Before vendor init, caps: 008001bf
008005bf 00000000, vendor = 2
Aug 17 09:06:49 phoenix kernel: AMD K6 stepping B detected - <6>K6 BUG
9016725 20000000 (Report these if test report is incorrect)
Aug 17 09:06:49 phoenix kernel: AMD K6 stepping B detected - probably OK
(after B9730xxxx).
Aug 17 09:06:49 phoenix kernel: Please see
http://www.mygale.com/~poulot/k6bug.html
Aug 17 09:06:49 phoenix kernel: CPU: L1 I Cache: 32K (32 bytes/line), D
cache 32K (32 bytes/line)
Aug 17 09:06:49 phoenix kernel: CPU: After vendor init, caps: 008001bf
008005bf 00000000 00000000
Aug 17 09:06:49 phoenix kernel: CPU: After generic, caps: 008001bf
008005bf 00000000 00000000
Aug 17 09:06:49 phoenix kernel: CPU: Common caps: 008001bf
008005bf 00000000 00000000
Aug 17 09:06:49 phoenix kernel: CPU: AMD-K6tm w/ multimedia extensions
stepping 01

Is the stepping not the first part of the serial? I have 64MB (the
amount that triggers the bug IIRC) in the system and the the kernel and
everything else compiles without generating a SIG11.

Is this a false detection or would it be possible that I have a wrongly
tagged CPU?

Also the link http://www.mygale.com/~poulot/k6bug.html does not exist.

Please CC replies to me as I am not on the list.

Regards,

/James

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