kernel/5075: Kernel panic AMD mobile Athlon (k7-powernow) with current

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kernel/5075: Kernel panic AMD mobile Athlon (k7-powernow) with current

Andreas Bihlmaier-2
>Number:         5075
>Category:       kernel
>Synopsis:       Current kernel panic related to powernow on mobile Athlon
>Confidential:   yes
>Severity:       critical
>Priority:       high
>Responsible:    bugs
>State:          open
>Quarter:        
>Keywords:      
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   unknown
>Arrival-Date:   Thu Apr 13 08:30:02 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator:    
>Release:        3.9-current
>Organization:
>Environment:
        Laptop with AMD mobile Athlon XP 2500+ (see below)
        System      : OpenBSD 3.9-current
        Architecture: OpenBSD.i386
        Machine     : i386
>Description:
        After installation (with bsd.rd), current GENERIC /bsd drops to ddb
        while identifying cpu.

        (Hand copied):
        OpenBSD 3.9-current (GENERIC) #685: Mon Apr 10 14:00:41 MDT 2006
                [hidden email]:/usr/src/sys/arch/i386/compile/GENERIC
        cpu0: mobile AMD Athlon(tm) XP 2500+ ("AuthenticAMD" 686-clas, 512KB L2 cache) 1.87GHz
        cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE
        kernel: page fault trap, code=0
        Stopped at k7pnow_states+0x86: cmpl 0(%esi),%eax
        ddb> trace
        k7pnow_states(d106ce00,6a0,16,b) at k7pnow_states+0x86
        k7_powernow_init(d0793780,d064b9f5,d063c64c,d06a9b64) at k7_powernow_init+0xec
        identifycpu(d0793780,d063c244,10,d087b000,d06a9b64) at identifycpu+0x36b
        cpu_startup(d061bb55,d061a8a0,d080ffa0,d030efba,1fff0000) at cpu_startup+0x94
        main(0,0,A,0,0) at main+0x5c
        ddb> ps
        <nothing (of course)>

>How-To-Repeat:
        Boot /bsd
>Fix:
        Worked on an older 3.8-current (sorry don't know date anymore)


>Release-Note:
>Audit-Trail:
>Unformatted: