diff --git a/tools/lib/lockdep/preload.c b/tools/lib/lockdep/preload.c
index 52844847569c..226aa26198a9 100644
--- a/tools/lib/lockdep/preload.c
+++ b/tools/lib/lockdep/preload.c
@@ -4,6 +4,7 @@
 #include <dlfcn.h>
 #include <stdlib.h>
 #include <sysexits.h>
+#include <unistd.h>
 #include "include/liblockdep/mutex.h"
 #include "../../include/linux/rbtree.h"
 
@@ -149,7 +150,7 @@ static struct lock_lookup *alloc_lock(void)
 
 		int idx = __locks_nr++;
 		if (idx >= ARRAY_SIZE(__locks)) {
-			fprintf(stderr,
+			dprintf(STDERR_FILENO,
 		"LOCKDEP error: insufficient LIBLOCKDEP_STATIC_ENTRIES\n");
 			exit(EX_UNAVAILABLE);
 		}
diff --git a/tools/lib/lockdep/uinclude/linux/kallsyms.h b/tools/lib/lockdep/uinclude/linux/kallsyms.h
index b0f2dbdf1a15..582cc1e5f3a4 100644
--- a/tools/lib/lockdep/uinclude/linux/kallsyms.h
+++ b/tools/lib/lockdep/uinclude/linux/kallsyms.h
@@ -3,6 +3,7 @@
 
 #include <linux/kernel.h>
 #include <stdio.h>
+#include <unistd.h>
 
 #define KSYM_NAME_LEN 128
 
@@ -24,7 +25,7 @@ static inline void print_ip_sym(unsigned long ip)
 
 	name = backtrace_symbols((void **)&ip, 1);
 
-	printf("%s\n", *name);
+	dprintf(STDOUT_FILENO, "%s\n", *name);
 
 	free(name);
 }
diff --git a/tools/lib/lockdep/uinclude/linux/lockdep.h b/tools/lib/lockdep/uinclude/linux/lockdep.h
index c157242e0417..d988fba99454 100644
--- a/tools/lib/lockdep/uinclude/linux/lockdep.h
+++ b/tools/lib/lockdep/uinclude/linux/lockdep.h
@@ -7,6 +7,7 @@
 #include <limits.h>
 #include <linux/utsname.h>
 #include <linux/compiler.h>
+#include <unistd.h>
 
 #define MAX_LOCK_DEPTH 63UL
 
@@ -37,7 +38,7 @@ static inline int debug_locks_off(void)
 #define task_pid_nr(tsk) ((tsk)->pid)
 
 #define KSYM_NAME_LEN 128
-#define printk printf
+#define printk(...) dprintf(STDOUT_FILENO, __VA_ARGS__)
 
 #define list_del_rcu list_del