Ticket #13744: handle-stack-fault.diff

src/system/kernel/arch/x86/64/descriptors.cpp

@@ -329 +329 @@
 }
 
 
+static void
+x86_64_stack_fault_exception(iframe* frame)
+{
+    // Non-canonical address accesses which reference the stack cause a stack
+    // fault exception instead of GPF. However, we can treat it like a GPF.
+    x86_64_general_protection_fault(frame);
+}
+
+
 // #pragma mark -
 
 
@@ -381 +390 @@
     table[9]  = x86_fatal_exception;        // Coprocessor Segment Overrun
     table[10] = x86_fatal_exception;        // Invalid TSS Exception (#TS)
     table[11] = x86_fatal_exception;        // Segment Not Present (#NP)
-    table[12] = x86_fatal_exception;        // Stack Fault Exception (#SS)
+    table[12] = x86_64_stack_fault_exception;    // Stack Fault Exception (#SS)
     table[13] = x86_64_general_protection_fault; // General Protection Exception (#GP)
     table[14] = x86_page_fault_exception;   // Page-Fault Exception (#PF)
     table[16] = x86_unexpected_exception;   // x87 FPU Floating-Point Error (#MF)

src/system/kernel/arch/x86/arch_int.cpp

@@ -139 +139 @@
             signalAddress = frame->ip;
             break;
 
+        case 12:    // Stack Fault (#SS)
+            type = B_STACK_FAULT;
+            signalNumber = SIGILL;
+            signalCode = ILL_ILLOPN;
+            signalAddress = frame->ip;
+            break;
+
         case 13:    // General Protection Exception (#GP)
             type = B_GENERAL_PROTECTION_FAULT;
             signalNumber = SIGILL;