Fix random crashes at boot

kernel/amd64/gdt.h

@@ -12,7 +12,7 @@
 #define GDT_TSS   0x28
 
 /* Size of kernel stack */
-#define KSTACK_SIZE (32 * 1024)
+#define KSTACK_SIZE (1024 * 1024 * 4)
 
 /*
  * 64-bit GDT structure. For more info see:

kernel/device/device.c

@@ -138,7 +138,7 @@ static void sys_device_init (void) {
       break;
   }
 
-  const size_t unpack_buffer_size = 1024 * 1024 * 10;
+  const size_t unpack_buffer_size = 1024 * 1024 * 15;
   uint8_t* unpack_buffer = malloc (unpack_buffer_size);
 
   LZ4F_decompressionContext_t dctx;

kernel/lz4/lz4.c

@@ -1,3 +1,4 @@
+#pragma clang optimize off
 /*
    LZ4 - Fast LZ compression algorithm
    Copyright (c) Yann Collet. All rights reserved.

kernel/lz4/lz4frame.c

@@ -1,3 +1,4 @@
+#pragma clang optimize off
 /*
  * LZ4 auto-framing library
  * Copyright (c) Yann Collet. All rights reserved.

kernel/lz4/lz4hc.c

@@ -1,3 +1,4 @@
+#pragma clang optimize off
 /*
     LZ4 HC - High Compression Mode of LZ4
     Copyright (c) Yann Collet. All rights reserved.