gistfile1.txt

Reading symbols from /netbsd.gdb...done.
Load new symbol table from "/netbsd.gdb"? (y or n) y
Reading symbols from /netbsd.gdb...done.
#0  0xc05a2358 in maybe_dump (howto=260)
    at /usr/src/sys/arch/i386/i386/machdep.c:878
878                     dumpsys();
#0  0xc05a2358 in maybe_dump (howto=260) at /usr/src/sys/arch/i386/i386/machdep.c:878
#1  cpu_reboot (howto=260, bootstr=0x0) at /usr/src/sys/arch/i386/i386/machdep.c:899
#2  0xc0790a5a in vpanic (fmt=0xc0bb1c7b "uvm", ap=0xdafaab7c "")
    at /usr/src/sys/kern/subr_prf.c:308
#3  0xc0790aff in panic (fmt=0xc0bb1c7b "uvm") at /usr/src/sys/kern/subr_prf.c:205
#4  0xc0867e56 in udv_fault (ufi=0xdafaac78, vaddr=3148689408, pps=0xdafaabd8, npages=1, 
    centeridx=0, access_type=2, flags=66) at /usr/src/sys/uvm/uvm_device.c:390
#5  0xc08691d0 in uvm_fault_internal (orig_map=0xc2fcee5c, vaddr=3148689408, access_type=2, 
    fault_flag=0) at /usr/src/sys/uvm/uvm_fault.c:897
#6  0xc07de9e9 in trap (frame=0xdafaad48) at /usr/src/sys/arch/i386/i386/trap.c:688
#7  0xc010cf48 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
873             /* Disable interrupts. */


http://nxr.netbsd.org/source/xref/src/sys/arch/i386/i386/trap.c#657
でuvm_fault_internalが呼ばれるのは確定！

    301 void
    302 trap(struct trapframe *frame)

    655 		onfault = pcb->pcb_onfault;
    656 		pcb->pcb_onfault = NULL;
    657 		error = uvm_fault(map, va, ftype);
    658 		pcb->pcb_onfault = onfault;
    659 		if (error == 0) {
    
    


http://nxr.netbsd.org/source/xref/src/sys/uvm/uvm_fault.c#uvm_fault_internal

    352 static int
    353 udv_fault(struct uvm_faultinfo *ufi, vaddr_t vaddr, struct vm_page **pps,
    354     int npages, int centeridx, vm_prot_t access_type,
    355     int flags)

    423 		paddr = pmap_phys_address(mdpgno);
    424 		mmapflags = pmap_mmap_flags(mdpgno);
    425 		mapprot = ufi->entry->protection;
    426 		UVMHIST_LOG(maphist,
    427 		    "  MAPPING: device: pm=0x%x, va=0x%x, pa=0x%lx, at=%d",
    428 		    ufi->orig_map->pmap, curr_va, paddr, mapprot);
    429 		if (pmap_enter(ufi->orig_map->pmap, curr_va, paddr, mapprot,
    430 		    PMAP_CANFAIL | mapprot | mmapflags) != 0) {
    431 			/*
    432 			 * pmap_enter() didn't have the resource to
    433 			 * enter this mapping.  Unlock everything,
    434 			 * wait for the pagedaemon to free up some
    435 			 * pages, and then tell uvm_fault() to start
    436 			 * the fault again.
    437 			 *
    438 			 * XXX Needs some rethinking for the PGO_ALLPAGES
    439 			 * XXX case.
    440 			 */
                    ココの処理は発生しない！
    441 			pmap_update(ufi->orig_map->pmap);	/* sync what we have so far */
    442 			uvmfault_unlockall(ufi, ufi->entry->aref.ar_amap,
    443 			    uobj);
    444 			uvm_wait("udv_fault");
    445 			return (ERESTART);
    446 		}
    447 	}