Fix stack overruns

src/kernel/boot.s

@@ -48,7 +48,7 @@ interrupts_disable:
 section .bss
 align 0x100
 idle_stack_begin:
-	resb 0x1000 ; 4KiB stack space
+	resb 0x4000 ; 16KiB stack space
 
 global idle_stack_end
 idle_stack_end:

src/kernel/interrupts.cpp

@@ -184,7 +184,10 @@ isr_handler(cpu_state *regs)
 			uintptr_t cr2 = 0;
 			__asm__ __volatile__ ("mov %%cr2, %0" : "=r"(cr2));
 
-			if (!page_manager::get()->fault_handler(cr2)) {
+			if ((regs->errorcode & 0x9) == 0 &&
+				page_manager::get()->fault_handler(cr2))
+				break;
+
 			cons->set_color(11);
 			cons->puts("\nPage Fault:\n");
 			cons->set_color();
@@ -200,7 +203,6 @@ isr_handler(cpu_state *regs)
 			print_stacktrace(2);
 			_halt();
 		}
-		}
 		break;
 
 	case isr::isrTimer:

src/libraries/kutil/include/kutil/logger.h

@@ -110,7 +110,7 @@ void fatal(area_t area, const char *fmt, ...);
 } // namespace log
 
 namespace logs {
-#define LOG(name, lvl) extern log::area_t name;
+#define LOG(name, lvl) extern const log::area_t name;
 #include "log_areas.inc"
 #undef LOG
 } // namespace logs

src/libraries/kutil/include/kutil/slab_allocator.h

@@ -29,7 +29,7 @@ public:
 	/// \returns  An allocated element
 	inline item_type * pop()
 	{
-		if (this->empty()) allocate();
+		if (this->empty()) this->allocate();
 		kassert(!this->empty(), "Slab allocator is empty after allocate()");
 		item_type *item = this->pop_front();
 		kutil::memset(item, 0, sizeof(item_type));

src/libraries/kutil/logger.cpp

@@ -7,7 +7,7 @@
 namespace kutil {
 namespace logs {
 #define LOG(name, lvl) \
-	log::area_t name = #name ## _h; \
+	const log::area_t name = #name ## _h; \
 	const char * name ## _name = #name;
 #include "log_areas.inc"
 #undef LOG
@@ -19,7 +19,7 @@ using kutil::memset;
 using kutil::memcpy;
 
 logger *logger::s_log = nullptr;
-const char *logger::s_level_names[] = {"", "debug", " info", " warn", "error", "fatal"};
+const char *logger::s_level_names[] = {"", "debug", "info", "warn", "error", "fatal"};
 
 logger::logger() :
 	m_buffer(nullptr, 0),