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Posted: **29 Jul 2017 18:34**

Hello I am facing some crash on android using libvlc while releasing the MediaPlayer:

07-29 15:28:22.342  3619  4720 E VLC-std : LibVLC fatal error destroying mutex (16) in thread 4723 at ../../src/android/thread.c:113 in vlc_mutex_destroy
07-29 15:28:22.342  3619  4720 E VLC-std :  Error message: Device or resource busy
07-29 15:28:22.342  3619  4720 E VLC-std : ../../src/android/thread.c:113: vlc_mutex_destroy: assertion "!"destroying mutex"" failed
--------- beginning of crash
07-29 15:28:22.342  3619  4723 F libc    : ../../src/android/thread.c:113: vlc_mutex_destroy: assertion "!"destroying mutex"" failed
..........
07-29 15:28:22.541  3619  4723 F libc    : Fatal signal 6 (SIGABRT), code -6 in tid 4723 (pool-3-thread-3)

What could be ?

Thank you

Posted: **29 Jul 2017 20:23**

You're destroying a media player that's actively used by at least one thread. That's undefined behaviour.

Posted: **31 Jul 2017 17:49**

You're destroying a media player that's actively used by at least one thread. That's undefined behaviour.

it is happening after calling stop() on MediaPlayer object and then call release() on it

Posted: **31 Jul 2017 18:15**

I'm not saying the UB is in your code. It could be in your code. It could be in VLC. It could be in the OS.

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