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-rw-r--r--sysdeps/nptl/fork.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/sysdeps/nptl/fork.c b/sysdeps/nptl/fork.c
index a7dafa82ab..7ef693d529 100644
--- a/sysdeps/nptl/fork.c
+++ b/sysdeps/nptl/fork.c
@@ -46,7 +46,8 @@ fresetlockfiles (void)
   _IO_ITER i;
 
   for (i = _IO_iter_begin(); i != _IO_iter_end(); i = _IO_iter_next(i))
-    _IO_lock_init (*((_IO_lock_t *) _IO_iter_file(i)->_lock));
+    if ((_IO_iter_file (i)->_flags & _IO_USER_LOCK) == 0)
+      _IO_lock_init (*((_IO_lock_t *) _IO_iter_file(i)->_lock));
 }