Subject: Re: UVM and SparcStation5
To: None <kurt.schreiner@uni-mainz.de>
From: Chuck Cranor <chuck@dworkin.wustl.edu>
List: port-sparc
Date: 02/10/1998 09:03:55
>kernel failed with a panic: kernel data fault trying to start init:
>....
>root file system type: ffs
>uvm_swap: allocated 256 swap buffer headers
>data fault: pc=0xf00fbec8 addr=0x1f8 sfsr=126<FAV>
>panic: kernel fault
>Stopped at    _Debugger+0x4: jmpl	[%o7+0x8], %g0
>db>
>db> trace
>_mem_access_fault4m(...)
>mem_access_fault4m+0x308
>memfault_sun4m(...)
>_uvm_fault(...)
>_mem_access_fault4m(...)
>memfault_sun4m(...)
>_copyout(...)
>copyout+0x28
>_sys_execve(...)
>_start_init(...)
>_proc_trampoline(...)


it looks like the fault handler (uvm_fault) got an unexpected fault.
this could be a sun4m thing... i don't have a sun4m to play with
(i only have sun4c/sun4).

it would be useful to know which statement in uvm_fault() is causing
the unexpected fault [i.e. translate uvm_fault+0x???? back to a place
in the source files].

chuck