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authorDavid S. Miller <davem@davemloft.net>2009-12-10 23:05:23 -0800
committerDavid S. Miller <davem@davemloft.net>2009-12-10 23:05:23 -0800
commitfb34035e7b4bb3edc7c2dc0683cfe21f57a9574d (patch)
treeddde17e5690d77f4f61c6271fc8b6f520c746851 /arch/sparc/lib
parent4ed5d5e4299f42438dd5ac6dcb1f2168ea4fb02a (diff)
downloadlinux-linaro-fb34035e7b4bb3edc7c2dc0683cfe21f57a9574d.tar.gz
sparc: Use __builtin_object_size() to validate the buffer size for copy_from_user()
This mirrors x86 commit 9f0cf4adb6aa0bfccf675c938124e68f7f06349d (x86: Use __builtin_object_size() to validate the buffer size for copy_from_user()) Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/lib')
-rw-r--r--arch/sparc/lib/Makefile1
-rw-r--r--arch/sparc/lib/usercopy.c8
2 files changed, 9 insertions, 0 deletions
diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile
index e75faf0e59a..c4b5e03af11 100644
--- a/arch/sparc/lib/Makefile
+++ b/arch/sparc/lib/Makefile
@@ -44,3 +44,4 @@ obj-y += iomap.o
obj-$(CONFIG_SPARC32) += atomic32.o
obj-y += ksyms.o
obj-$(CONFIG_SPARC64) += PeeCeeI.o
+obj-y += usercopy.o
diff --git a/arch/sparc/lib/usercopy.c b/arch/sparc/lib/usercopy.c
new file mode 100644
index 00000000000..14b363fec8a
--- /dev/null
+++ b/arch/sparc/lib/usercopy.c
@@ -0,0 +1,8 @@
+#include <linux/module.h>
+#include <linux/bug.h>
+
+void copy_from_user_overflow(void)
+{
+ WARN(1, "Buffer overflow detected!\n");
+}
+EXPORT_SYMBOL(copy_from_user_overflow);