[shell] And that's what was causing a bunch of my problems.

kernel/core/shell.c

@@ -265,6 +265,7 @@ start_shell() {
 					close_fs(chd);
 					exec(filename, tokenid, argv);
 				}
+				free(filename);
 			}
 		}
 	}

kernel/main.c

@@ -34,6 +34,7 @@
 #include <system.h>
 #include <boot.h>
 #include <ext2.h>
+#include <fs.h>
 
 extern uintptr_t heap_end;
 
@@ -156,16 +157,5 @@ int main(struct multiboot *mboot, uint32_t mboot_mag, uintptr_t esp)
 
 	start_shell();
 
-	while (1) {
-		kprintf("[%d] 0x%x\n", next_pid, exec("/bin/test", 0, NULL));
-	}
-
-	while (1) {
-		if (!fork()) {
-			kprintf("%d 0x%x\n", getpid(), heap_end);
-			kexit(0);
-		}
-	}
-
 	return 0;
 }