- **Milestone**: 5.19.07 --> 5.19.10
---
** [tickets:#2906] imm: application is crashed when IMMA unlocks the mutex**
**Status:** assigned
**Milestone:** 5.19.10
**Created:** Tue Jul 31, 2018 08:02 AM UTC by Vu Minh Nguyen
**Last Updated:** Wed Jul 03, 2019 06:28 AM UTC
**Owner:** Vu Minh Nguyen
In most OpenSAF agent code, the mutex would be destroyed while it is being
locked by other threads.
~~~
/* destroy the lock */
m_NCS_LOCK_DESTROY(&cb->cb_lock);
~~~
When the other threads come to unlock the mutex, EPERM or EINVAL will be
returned.
1) EPERM: when being-locked mutex is destroyed and replaced by the new one,
unlocking on that mutex is actually same as unlocking on not-being-locked mutex.
2) EINVAL: the being-locked mutex has been desotroyed and not yet intialized.
In both cases, application will be crashed. One of them was already reported in
the ticket [#2885].
---
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