On Sun, Apr 02, 2006 at 09:17:19PM +0200, Stephane Bortzmeyer wrote:
> In order to recompile the kernel, I tried to install its
> sources. Doing so, I filled in the disk, which crashed the system :-(
> panic: HYPERVISOR_mmu_update failed
>                                    
> Stopped in pid 24053.1 (sh) at  netbsd:cpu_Debugger+0x4:        popl    %ebp
> db>                                                                         
> db> 
> db> 
> db> trace      
> cpu_Debugger(c0402c86,c6aebca8,c6aebcbc,c02ab460,3e23000) at netbsd:cpu_Debugger
> +0x4                                                                           
> panic(c040381d,1,3,0,b0f0bf8) at netbsd:panic+0x12c
> xpq_flush_queue(b0f0bf8,91b8007,0,0,3) at netbsd:xpq_flush_queue+0x5c
> pmap_get_ptp(c5e093dc,2fe,d8000,0,ffffffff) at netbsd:pmap_get_ptp+0x15c
> pmap_enter_ma(c5e093dc,bfbfc000,b56e000,1a6d000,1) at netbsd:pmap_enter_ma+0x113
>                                                                                
> pmap_enter(c5e093dc,bfbfc000,1a6d000,1,20) at netbsd:pmap_enter+0x68
> uvm_fault_internal(c6bd5468,bfbfd000,1,0,1) at netbsd:uvm_fault_internal+0x102d
> trap() at netbsd:trap+0x304                                                    

Did you have network activity going on while this happened ? I can't see how
the disk driver could cause this, but I have an idea for the network driver ...

-- 
Manuel Bouyer <bouyer@antioche.eu.org>
     NetBSD: 26 ans d'experience feront toujours la difference
--