Re: PANICS on 9.0-BETA1

on 21/08/2011 20:47 Derrick Edwards said the following:
> On Fri, 2011-08-19 at 17:21 +0300, Andriy Gapon wrote:
>> on 19/08/2011 01:07 Derrick Edwards said the following:
>>> Fatal trap 12: page fault while in kernel mode
>>> cpuid = 0; apic id = 00
>>> fault virtual address   = 0xffffbe00a45b6798
>>
>> This address looks suspiciously like a result of bit flips.
>>
>>> fault code              = supervisor write data, page not present
>>> instruction pointer     = 0x20:0xffffffff814f444c
>>> stack pointer           = 0x28:0xffffff82267fbe90
>>> frame pointer           = 0x28:0xffffff82267fbea0
>>> code segment            = base 0x0, limit 0xfffff, type 0x1b
>>>                         = DPL 0, pres 1, long 1, def32 0, gran 1
>>> processor eflags        = interrupt enabled, resume, IOPL = 0
>>> current process         = 5889 (csup)
>>> trap number             = 12
>>> panic: page fault
>>> cpuid = 0
>>> Uptime: 10h9m0s
>>> Dumping 1823 out of 7912
>>
>> Do you always get the same stack trace? Or are they always different?
>> I would double-check the hardware first.
>>
>     Andriy,
> Thanks for the reply. The stack trace are different. Attached is the
> latest one. Machine is about 3 months old. Any recommendations on what
> hardware to start looking at. Panic occurs with X and without X being
> used. 

Start with the memory - try memtest86/memtest86+.
But actually any bit could be under suspicion - CPU, PSU, etc.

-- 
Andriy Gapon