Fix a few issues

Panics in a few ISRs did not include registers. Removed a dot in panic string. Fixed an issue that would cause the system to page fault inside the vmm_dealwithrequest() function.

src/arch/x86_64/isr.c

@@ -3,7 +3,7 @@
 #include <kernel/vmm.h>
 
 void isr_general(arch_regs *reg){
-	_panic("Unhandled interrupt", 0);
+	_panic("Unhandled interrupt", reg);
 	asm("hlt");
 }
 
@@ -15,6 +15,6 @@ void isr_except(arch_regs *reg){
 void isr_pagefault(arch_regs *reg){
 	
 	if(!vmm_dealwithrequest(reg->cr2))
-		_panic("Page fault!\n", 0);
+		_panic("Page fault!", reg);
 	
 }

src/arch/x86_64/panic.c

@@ -20,7 +20,7 @@ static void tracestack(uint64_t** addr){
 
 __attribute((noreturn)) void _panic(char* reason, arch_regs *reg){
 	
-	printf("PANIC: %s.\n", reason);
+	printf("PANIC: %s\n", reason);
 	
 	if(reg){
 		printf("Register dump:\nRAX: %p RBX: %p RCX: %p RDX: %p R8: %p R9: %p R10: %p R11: %p R12: %p R13: %p R14: %p R15: %p RDI: %p RSP: %p RBP: %p DS: %p ES: %p FS: %p GS: %p CR2: %p ERR: %p RIP: %p CS: %p RFLAGS: %p SS: %p\n",

src/sys/mm/vmm.c

@@ -439,12 +439,15 @@ bool vmm_map(void* paddr, void* vaddr, size_t pagec, size_t mmuflags){
 bool vmm_dealwithrequest(void* addr){
 	
 	int* lock;
-	vmm_mapping** start;
+	vmm_mapping** start = NULL;
 	
 	getcontextinfo(addr, &lock, &start);
 	
+	if(!start) return false;
+
 	spinlock_acquire(lock);
 	
+
 	bool status;
 	vmm_mapping* map = findmappingfromaddr(*start, addr);
 	void* paddr;