lib: fix incorrect thread management

The current code passes an address of a local variable to `thread_add_read`
which stores it into `thread->ref` by the lib. The next time the thread
callback is executed, the lib stores NULL into the `thread->ref` which
means it writes into some random memory on the stack.

To fix this, we should pass a pointer to the vector entry to the lib.

Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/lib/vector.c b/lib/vector.c
index 565c49fd59..4af564a82f 100644
--- a/lib/vector.c
+++ b/lib/vector.c
@@ -123,6 +123,17 @@ int vector_set_index(vector v, unsigned int i, void *val)
 	return i;
 }
 
+/* Make a specified index slot active and return its address. */
+void **vector_get_index(vector v, unsigned int i)
+{
+	vector_ensure(v, i);
+
+	if (v->active <= i)
+		v->active = i + 1;
+
+	return &v->index[i];
+}
+
 /* Look up vector.  */
 void *vector_lookup(vector v, unsigned int i)
 {