diff --git a/Makefile b/Makefile
index 1ebe675..6af38e5 100644
--- a/Makefile
+++ b/Makefile
@@ -3,9 +3,9 @@ CPPFLAGS = -MMD
 AS=nasm
 ASFLAGS += -f elf32
 LDFLAGS += -m elf_i386
-CFLAGS += -m32 -pipe -Wall -Wextra -Werror -ffreestanding -fno-exceptions -fno-pie -fno-stack-protector -fno-tree-vectorize -D__KERNEL__
+CFLAGS += -m32 -pipe -Wall -Wextra -Werror -ffreestanding -fno-exceptions -fno-pie -fno-tree-vectorize -D__KERNEL__ -fstack-protector-all -mstack-protector-guard=global
 #keep .i and .s
-#CFLAGS += -save-temps
+#CFLAGS += -save-temps -fverbose-asm
 #CFLAGS += -fanalyzer -Wno-analyzer-malloc-leak -Wno-analyzer-out-of-bounds
 CXXFLAGS += -m32 -Wall -Wextra -Werror -ffreestanding -fno-exceptions -fno-rtti -fno-pie
 DEBUG_FLAGS += -g -Og -DDEBUG -fno-omit-frame-pointer -fno-inline
diff --git a/core/assert.h b/core/assert.h
index 5bafdd8..d42c602 100644
--- a/core/assert.h
+++ b/core/assert.h
@@ -22,3 +22,14 @@
             }                                                                                 \
         }                                                                                     \
     } while (0)
+
+#define panic(fmt, args...)                                                                   \
+    do {                                                                                      \
+        asm volatile("cli");                                                                  \
+        printf("PANIC at %s:%d\n " fmt "", __FILE__, __LINE__);                                \
+        printf("PANIC: " fmt "\n", ##args);                               \
+        printStackTrace(3);                                                                   \
+        while (1)                                                                             \
+            asm volatile("hlt");                                                              \
+        __builtin_unreachable();                                                              \
+    } while (0)