menuconfig: add help description for Stack Smashing Protection options

Descriptions taken from: https://wiki.osdev.org/Stack_Smashing_Protector Signed-off-by: Marius Dinu <[email protected]> Link: openwrt/openwrt#16897 Signed-off-by: Christian Marangi <[email protected]>
liulang25 · Nov 10, 2024 · cbf7be9 · cbf7be9
1 parent 79f0682
commit cbf7be9
Showing 1 changed file with 18 additions and 0 deletions.
diff --git a/config/Config-build.in b/config/Config-build.in
@@ -295,12 +295,22 @@ menu "Global build settings"
 		  Enable GCC Stack Smashing Protection (SSP) for userspace applications
 		config PKG_CC_STACKPROTECTOR_NONE
 			bool "None"
+			help
+				No stack smashing protection.
 		config PKG_CC_STACKPROTECTOR_REGULAR
 			bool "Regular"
+			help
+				Protects functions with vulnerable objects.
+				This includes functions with buffers larger than 8 bytes or calls to alloca.
 		config PKG_CC_STACKPROTECTOR_STRONG
 			bool "Strong"
+			help
+				Like Regular, but also protects functions with
+				local arrays or references to local frame addresses.
 		config PKG_CC_STACKPROTECTOR_ALL
 			bool "All"
+			help
+				Protects all functions.
 	endchoice
 
 	choice
@@ -310,10 +320,18 @@ menu "Global build settings"
 		  Enable GCC Stack-Smashing Protection (SSP) for the kernel
 		config KERNEL_CC_STACKPROTECTOR_NONE
 			bool "None"
+			help
+				No stack smashing protection.
 		config KERNEL_CC_STACKPROTECTOR_REGULAR
 			bool "Regular"
+			help
+				Protects functions with vulnerable objects.
+				This includes functions with buffers larger than 8 bytes or calls to alloca.
 		config KERNEL_CC_STACKPROTECTOR_STRONG
 			bool "Strong"
+			help
+				Like Regular, but also protects functions with
+				local arrays or references to local frame addresses.
 	endchoice
 
 	config KERNEL_STACKPROTECTOR