They are fine on mine:
e2ef76e1207a24899258da6d6fabebe1 ../spec-gen
e2ef76e1207a24899258da6d6fabebe1 spec-gen
your steppings are off by 5 I think that may come into play in this picture...
Fabrice Bellet wrote:
> Hello,
>
> I'm actually experiencing some strange behaviour running
> linux-2.2.10-ac8 on the smp box described in the subject.
> Two files are identical and are seen identical with the
> UP kernel 2.0.36. but are "seen" corrupted in the 2.2.10 SMP
> kernel (and also 2.2.6 SMP).
>
> Here is the test :
>
> md5sum on linux-2.0.36 non-smp
> 03a8bcf44d1bfce4212300658c264dc2 netscape-common-4.6-0.i386.rpm
> 03a8bcf44d1bfce4212300658c264dc2 titi/netscape-common-4.6-0.i386.rpm
> (this is the correct md5sum for those files)
>
> md5sum on linux-2.2.10-ac8 smp
> 0d8dedef347cb8d4db54053065350fd7 netscape-common-4.6-0.i386.rpm
> 8b9ca52a277a6dd86647fddf1978dc63 titi/netscape-common-4.6-0.i386.rpm
>
> then I do some file accesses to eject those files from the buffer-cache:
> % tar cf - /usr/src/linux | wc
>
> and I do it again :
> % md5sums netscape-common-4.6-0.i386.rpm titi/netscape-common-4.6-0.i386.rpm
> 31ef3319d2f8b1eced3bb2e868b2a4e6 netscape-common-4.6-0.i386.rpm
> b5582fd042b49a38002be271c6b8f65b titi/netscape-common-4.6-0.i386.rpm
>
> If I compare differences between those files, that are supposed
> to be the same, I obtain :
>
> % hexdump netscape-common-4.6-0.i386.rpm > a
> % hexdump titi/netscape-common-4.6-0.i386.rpm > b
> % diff a b
> 5649c5649
> < 00169b0 4697 9c90 6e6a ccbf 77ea bd59 cc2b 6186
> ---
> > 00169b0 4697 9c90 ee6a ccbf 77ea bd59 cc2b 6186
> 21770c21770
> < 0055940 5a9d ad36 37a4 bb45 3144 c56c 4c70 e7a4
> ---
> > 0055940 5a9d ad36 37a4 bb45 3144 c56c cc70 e7a4
> 54526c54526
> < 00d5880 66ca 34ae fdcb d751 2fa6 1307 d175 d4dc
> ---
> and so on. only a few bits are swapped in the file.
>
> What can explain this ?
> The 2 processors have different stepping, could this be a probable cause ?
> Here are some snippets from my boot messages.
>
> % dmesg
>
> [snip snip]
>
> CPU0: Intel Pentium 75 - 200 stepping 01
> calibrating APIC timer ...
> ..... CPU clock speed is 90.2057 MHz.
> ..... system bus clock speed is 60.1369 MHz.
> Booting processor 1 eip 2000
> Calibrating delay loop... 36.04 BogoMIPS
> OK.
> CPU1: Intel Pentium 75 - 200 stepping 06
> Total of 2 processors activated (71.99 BogoMIPS).
> WARNING: SMP operation may be unreliable with B stepping processors.
> enabling symmetric IO mode... ...done.
> ENABLING IO-APIC IRQs
>
> [snip snip]
>
> PCI: PCI BIOS revision 2.00 entry at 0xfdbf0
> PCI: Using configuration type 1
> PCI: Probing PCI hardware
> PCI: 00:00 [8086/04a3]: Bridge optimization (00)
> Cache L2: Not supported.
> CPU-PCI posted write: on.
> CPU-Memory posted write: on.
> PCI-Memory posted write: off -> on.
> PCI burst: on.
>
> [snip snip]
>
> CMD640: ignored by ide_scan_pci_device() (uses own driver)
> ide0: buggy cmd640b interface on PCI (type1), config=0x7a
> ide1: not serialized, secondary interface not responding
> cmd640: drive0 timings/prefetch(off) preserved, clocks=4/5/13
> cmd640: drive1 timings/prefetch(off) preserved, clocks=4/5/13
>
> [snip snip]
>
> scsi0 : AM53/79C974 PCscsi driver rev. 0.5; host I/O address: 0xff00; irq: 10
>
> scsi : 1 host.
> Vendor: IBM Model: DORS-32160 Rev: S84A
> Type: Direct-Access ANSI SCSI revision: 02
> Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
> Vendor: QUANTUM Model: LPS270S Rev: 590H
> Type: Direct-Access ANSI SCSI revision: 02
> Detected scsi disk sdb at scsi0, channel 0, id 1, lun 0
> scsi : detected 2 SCSI disks total.
> SCSI device sda: hdwr sector= 512 bytes. Sectors= 4226725 [2063 MB] [2.1 GB]
> SCSI device sdb: hdwr sector= 512 bytes. Sectors= 528808 [258 MB] [0.3 GB]
> Partition check:
> sda: sda1 sda2 < sda5 sda6 sda7 >
> sdb: sdb1
> VFS: Mounted root (ext2 filesystem) readonly.
>
> I guess that B stepping processors could be the cause of the problem.
> I read the doc in ./arch/i386/kernel/smp.c but this is not very clear
> to me. Does a workaround exist for this case ? Thanks for your help.
>
> % cat /proc/cpuinfo
> processor : 0
> vendor_id : GenuineIntel
> cpu family : 5
> model : 2
> model name : Pentium 75 - 200
> stepping : 1
> cpu MHz : 90.206896
> fdiv_bug : yes
> hlt_bug : no
> sep_bug : no
> f00f_bug : yes
> fpu : yes
> fpu_exception : yes
> cpuid level : 1
> wp : yes
> flags : fpu vme de pse tsc msr mce cx8 apic 10
> bogomips : 35.94
>
> processor : 1
> vendor_id : GenuineIntel
> cpu family : 5
> model : 2
> model name : Pentium 75 - 200
> stepping : 6
> cpu MHz : 90.206896
> fdiv_bug : yes
> hlt_bug : no
> sep_bug : no
> f00f_bug : yes
> fpu : yes
> fpu_exception : yes
> cpuid level : 1
> wp : yes
> flags : fpu vme de pse tsc msr mce cx8 apic
> bogomips : 36.04
>
> --
>
> Fabrice
>
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--
Joseph Acosta ........ SMP Linux 2.2.10 / RedHat 6.0
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