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-rw-r--r--Documentation/dev-tools/kgdb.rst11
1 files changed, 10 insertions, 1 deletions
diff --git a/Documentation/dev-tools/kgdb.rst b/Documentation/dev-tools/kgdb.rst
index 75273203a35a..d38be58f872a 100644
--- a/Documentation/dev-tools/kgdb.rst
+++ b/Documentation/dev-tools/kgdb.rst
@@ -348,6 +348,15 @@ default behavior is always set to 0.
- ``echo 1 > /sys/module/debug_core/parameters/kgdbreboot``
- Enter the debugger on reboot notify.
+Kernel parameter: ``nokaslr``
+-----------------------------
+
+If the architecture that you are using enable KASLR by default,
+you should consider turning it off. KASLR randomizes the
+virtual address where the kernel image is mapped and confuse
+gdb which resolve kernel symbol address from symbol table
+of vmlinux.
+
Using kdb
=========
@@ -358,7 +367,7 @@ This is a quick example of how to use kdb.
1. Configure kgdboc at boot using kernel parameters::
- console=ttyS0,115200 kgdboc=ttyS0,115200
+ console=ttyS0,115200 kgdboc=ttyS0,115200 nokaslr
OR