Re: Help with machine check exception

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Alan Cox wrote:
On Iau, 2006-01-12 at 10:07 -0700, Orion Poplawski wrote:
mcelog decode states:

CPU 0 4 northbridge TSC 184fcd0553e4
   Northbridge Watchdog error
        bit57 = processor context corrupt
        bit61 = error uncorrected
   bus error 'generic participation, request timed out
       generic error mem transaction
       generic access, level generic'
STATUS b200000000070f0f MCGSTATUS 4
Kernel panic - not syncing: Machine check

Could be ram cpu or motherboard, even a power glitch of course.

Before you panic I'd suggest that you check the machine is being
adequately cooled (especially the CPU) and that the ram and cpu are all
well socketed.

memtest86+ will help test for memory problems and may be worth an
overnight run


Well, I've swapped memory with an identical machine and the problem stayed where it was. The crash is fairly frequent (about 1-2 days of operating).

adm1027-i2c-0-2e
Adapter: SMBus AMD8111 adapter at 10e0
V1.5:      +2.601 V  (min =  +1.42 V, max =  +1.58 V)   ALARM
VCore:     +1.304 V  (min =  +1.48 V, max =  +1.63 V)   ALARM
V3.3:      +3.326 V  (min =  +3.13 V, max =  +3.47 V)
V5:       +5.117 V  (min =  +4.74 V, max =  +5.26 V)
V12:      +12.094 V  (min = +11.38 V, max = +12.62 V)
CPU_Fan:      0 RPM  (min = 4000 RPM)                     ALARM
fan2:         0 RPM  (min =    0 RPM)
fan3:         0 RPM  (min =    0 RPM)
fan4:      4981 RPM  (min =    0 RPM)
CPU:      +50.00°C  (low  =   +10°C, high =   +50°C)
Board:    +34.00°C  (low  =   +10°C, high =   +35°C)
Remote:   +52.50°C  (low  =   +10°C, high =   +35°C)     ALARM
CPU_PWM:   255
Fan2_PWM:  255
Fan3_PWM:  255
vid:      +1.550 V  (VRM Version 9.1)


I would have expected 2 CPU temps (being dual-processor). Maybe Remote is the second.

With 4 copies of burnK7:

machine with problems:

CPU:      +71.25°C  (low  =   +10°C, high =   +50°C)     ALARM
Board:    +47.25°C  (low  =   +10°C, high =   +35°C)     ALARM
Remote:   +68.50°C  (low  =   +10°C, high =   +35°C)     ALARM

machine without:

CPU:      +61.25°C  (low  =   +10°C, high =   +50°C)     ALARM
Board:    +47.25°C  (low  =   +10°C, high =   +35°C)     ALARM
Remote:   +74.25°C  (low  =   +10°C, high =   +35°C)     ALARM


So *maybe* cooling?




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