Index: sys/compat/linuxkpi/common/include/linux/spinlock.h
===================================================================
--- sys/compat/linuxkpi/common/include/linux/spinlock.h
+++ sys/compat/linuxkpi/common/include/linux/spinlock.h
@@ -66,6 +66,7 @@
 
 #define	spin_lock_bh(_l) do {			\
 	spin_lock(_l);				\
+	local_bh_disable();			\
 } while (0)
 
 #define	spin_lock_irq(_l) do {			\
@@ -80,6 +81,7 @@
 } while (0)
 
 #define	spin_unlock_bh(_l) do {			\
+	local_bh_enable();			\
 	spin_unlock(_l);			\
 } while (0)