Re: UP kernel crashes

["Sepherosa Ziehau" <sepherosa@xxxxxxxxx>]

On Sun, May 11, 2008 at 11:03 AM, Sepherosa Ziehau <sepherosa@gmail.com> wrote:
> On Sun, May 11, 2008 at 1:26 AM, Matthew Dillon
>  <dillon@apollo.backplane.com> wrote:
>  >
>  > :Hi,
>  > :
>  > :Following line is printed immediately after copyrights prints:
>  > :panic: assertion: (newpte & VPTE_MANAGED) == 0 || m->flags & PG_MAPPED
>  > :in pmap_enter
>  > :
>  > :Back trace shows no function name.
>  > :
>  > :SMP kernel works without problem.
>  > :
>  > :Best Regards,
>  > :sephe
>  >
>  >    I haven't been able to reproduce this.  My UP vkernel boots ok.
>  >
>  >    Could you try gdb'ing your vkernel after it drops into DDB and see
>  >    if gdb can produce a backtrace ?
>
>  Grr, my working kernel is relatively old and panics upon vnconfig
>  vkernel root image.
>  But I built a GENERIC kernel and managed to map the backtrace address
>  to the function name:
>  begin (0xc0141beb)
>  mi_startup (0xc029ad61)
>  vm_mem_init (0xc041bfcc)
>  pmap_init (0xc04a1286)
>  kmem_alloc3 (0xc041c500)
>  vm_map_wire (0xc041fb10)
>  vm_fault_wire (0xc041b766)
>  vm_fault (0xc041b602)
>  pmap_enter (0xc04a37b3)
>  panic (0xc02bbd53)
>
>  Hope this will be helpful
>  I am uploading kernel image to leaf

It is at ~sephe/crash/kernel.bz2

>
>
>
>  Best Regards,
>  sephe
>
>  --
>  Live Free or Die
>



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