1 files changed, 21 insertions, 0 deletions

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 566cf2bc08ea..cc443bc6edfc 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1475,6 +1475,27 @@ config ASYNC_RAID6_TEST
 
           If unsure, say N.
 
+config HAVE_DEBUG_STACKOVERFLOW
+        bool
+
+config DEBUG_STACKOVERFLOW
+        bool "Check for stack overflows"
+        depends on DEBUG_KERNEL && HAVE_DEBUG_STACKOVERFLOW
+        ---help---
+          Say Y here if you want to check for overflows of kernel, IRQ
+          and exception stacks (if your archicture uses them). This
+          option will show detailed messages if free stack space drops
+          below a certain limit.
+
+          These kinds of bugs usually occur when call-chains in the
+          kernel get too deep, especially when interrupts are
+          involved.
+
+          Use this in cases where you see apparently random memory
+          corruption, especially if it appears in 'struct thread_info'
+
+          If in doubt, say "N".
+
 source "samples/Kconfig"
 
 source "lib/Kconfig.kgdb"