From: Robert Jarzmik <>

3.12-stable review patch.  If anyone has any objections, please let me know.


commit 51193b76bfff5027cf96ba63effae808ad67cca7 upstream.

When the kernel path contains a space or a colon somewhere in the path
name, the modules_install target doesn't work anymore, as the path names
are not enclosed in double quotes. It is also supposed that and O= build
will suffer from the same weakness as modules_install.

Instead of checking and improving kbuild to resist to directories
including these characters, error out early to prevent any build if the
kernel's main directory contains a space.

Signed-off-by: Robert Jarzmik <>
Signed-off-by: Michal Marek <>
Signed-off-by: Jiri Slaby <>
 Makefile | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Makefile b/Makefile
index 0b3a710c8a44..297c605c25bf 100644
--- a/Makefile
+++ b/Makefile
@@ -113,6 +113,10 @@ _all:
 # Cancel implicit rules on top Makefile
 $(CURDIR)/Makefile Makefile: ;
+ifneq ($(words $(subst :, ,$(CURDIR))), 1)
+  $(error main directory cannot contain spaces nor colons)
 ifneq ($(KBUILD_OUTPUT),)
 # Invoke a second make in the output directory, passing relevant variables
 # check that the output directory actually exists

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