1 files changed, 7 insertions, 1 deletions

diff --git a/util-linux/losetup.c b/util-linux/losetup.c
index b52d693ec..5dc757074 100644
--- a/util-linux/losetup.c
+++ b/util-linux/losetup.c
@@ -114,8 +114,14 @@ int losetup_main(int argc UNUSED_PARAM, char **argv)
         /* contains -f */
         if (opt & OPT_f) {
                 char *s;
-                int n = 0;
+                int n;
 
+                n = get_free_loop();
+                if (n == -1)
+                        bb_error_msg_and_die("no free loop devices");
+                if (n < 0) /* n == -2: no /dev/loop-control, use legacy method */
+                        n = 0;
+                /* or: n >= 0: the number of next free loopdev, just verify it */
                 do {
                         if (n > MAX_LOOP_NUM)
                                 bb_error_msg_and_die("no free loop devices");