1 files changed, 6 insertions, 1 deletions

diff --git a/block/bsg.c b/block/bsg.c
index 54d617f7df3e..7c59ffaedfe0 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -19,6 +19,7 @@
 #include <linux/uio.h>
 #include <linux/idr.h>
 #include <linux/bsg.h>
+#include <linux/smp_lock.h>
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_ioctl.h>
@@ -835,7 +836,11 @@ static struct bsg_device *bsg_get_device(struct inode *inode, struct file *file)
 
 static int bsg_open(struct inode *inode, struct file *file)
 {
-        struct bsg_device *bd = bsg_get_device(inode, file);
+        struct bsg_device *bd;
+
+        lock_kernel();
+        bd = bsg_get_device(inode, file);
+        unlock_kernel();
 
         if (IS_ERR(bd))
                 return PTR_ERR(bd);