fix missing synchronization in calls from dynamic linker to global ctors

[musl] / src / ldso / dynlink.c

diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
index d197473..ac4b669 100644 (file)
--- a/src/ldso/dynlink.c
+++ b/src/ldso/dynlink.c
@@ -692,6 +692,10 @@ static void do_init_fini(struct dso *p)
                }
                if (dyn[0] & (1<<DT_INIT))
                        ((void (*)(void))(p->base + dyn[DT_INIT]))();
+               if (!need_locking && libc.threads_minus_1) {
+                       need_locking = 1;
+                       pthread_mutex_lock(&init_fini_lock);
+               }
        }
        if (need_locking) pthread_mutex_unlock(&init_fini_lock);
 }