Hi, 

   There are many items such as "/dev/shm/ust-shm-consumer-81132 (deleted)" exist in lttng-sessiond fd spaces. I know it is the result of shm_open() and shm_unlnik() in create_posix_shm(). 

   However, today, I found these items also exist in a traced application which is a long-time running daemon. The most important thing I found is that there seems no reliable way to release share memory.

   I tried to kill lttng-sessiond but not always release share memory. Sometimes I need to kill the traced application to free share memory....But it is not a good idea to kill these applications.

   My questions are: 

   1. Is there any way to release share memory without killing any traced application?

   2. Is it normal that many items such as "/dev/shm/ust-shm-consumer-81132 (deleted)" exist in the traced application?

Thanks

zhenyu.ren