CRED: Add some configurable debugging [try #6]

[mirror_ubuntu-artful-kernel.git] / lib / Kconfig.debug

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 12327b2bb785c256a59cb864a2c2b8976c33e5aa..fbb87cf138c516db92f9282cf0ee01c1aaa443c3 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -653,6 +653,21 @@ config DEBUG_NOTIFIERS
          This is a relatively cheap check but if you care about maximum
          performance, say N.
 
+config DEBUG_CREDENTIALS
+       bool "Debug credential management"
+       depends on DEBUG_KERNEL
+       help
+         Enable this to turn on some debug checking for credential
+         management.  The additional code keeps track of the number of
+         pointers from task_structs to any given cred struct, and checks to
+         see that this number never exceeds the usage count of the cred
+         struct.
+
+         Furthermore, if SELinux is enabled, this also checks that the
+         security pointer in the cred struct is never seen to be invalid.
+
+         If unsure, say N.
+
 #
 # Select this config option from the architecture Kconfig, if it
 # it is preferred to always offer frame pointers as a config