vhost: Fix the crash caused by accessing the released memory #80
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The rte_vhost_driver_unregister() 、vhost_user_read_cb()、vhost_user_client_reconnect() can be called at the same time by 3 threads. when memory of vsocket is freed in rte_vhost_driver_unregister(), then vhost_user_read_cb() maybe add vsocket to reconn_list, the invalid memory of vsocket is accessed in vhost_user_client_reconnect(). The core trace is: Program terminated with signal 11, Segmentation fault. The fix is to perform a delete operation again after releasing the memory
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The rte_vhost_driver_unregister() 、vhost_user_read_cb()、vhost_user_client_reconnect() can be called at the same time by 3 threads. when memory of vsocket is freed in rte_vhost_driver_unregister(), then vhost_user_read_cb() maybe add vsocket to reconn_list, the invalid memory of vsocket is accessed in vhost_user_client_reconnect().
The core trace is:
Program terminated with signal 11, Segmentation fault.
The fix is to perform a delete operation again after releasing the memory