[multipathd] Fix pthread bug in multipath-tools.

You should lock the mutex before doing a pthread_cond_wait otherwise
undefined results occur.  In fact we get away with this with glibc,
but with uclibc it causes a segfault.

diff --git a/multipathd/main.c b/multipathd/main.c
index 73b06cb..e875d14 100644 (file)
--- a/multipathd/main.c
+++ b/multipathd/main.c
@@ -1441,6 +1441,7 @@ child (void * param)
        pthread_create(&uxlsnr_thr, &misc_attr, uxlsnrloop, vecs);
        pthread_attr_destroy(&misc_attr);
 
+       lock(&exit_mutex);
        pthread_cond_wait(&exit_cond, &exit_mutex);
 
        /*