when friend join a world, minecraft crashes

here is what comes up when it crashes

Completely ignored arguments: [--nativeLauncherVersion, 301]
[20:36:24] [Client thread/INFO]: Setting user: iTimberWolf
[20:36:25] [Client thread/INFO]: LWJGL Version: 2.9.4
[20:36:25] [Client thread/INFO]: Reloading ResourceManager: Default
[20:36:28] [Sound Library Loader/INFO]: Starting up SoundSystem...
[20:36:29] [Thread-5/INFO]: Initializing LWJGL OpenAL
[20:36:29] [Thread-5/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[20:36:29] [Thread-5/INFO]: OpenAL initialized.
[20:36:29] [Sound Library Loader/INFO]: Sound engine started
[20:36:29] [Client thread/INFO]: Created: 1024x512 textures-atlas
[20:36:32] [Client thread/INFO]: Realms library version == 1.8.19
[20:36:33] [MCO Compatability Checker #1/INFO]: Realms is available for this user
[20:36:44] [Server thread/INFO]: Starting integrated minecraft server version 1.9.4
[20:36:44] [Server thread/INFO]: Generating keypair
[20:36:44] [Server thread/INFO]: Preparing start region for level 0
[20:36:45] [Server thread/INFO]: Preparing spawn area: 11%
[20:36:46] [Server thread/INFO]: Preparing spawn area: 28%
[20:36:47] [Server thread/INFO]: Preparing spawn area: 41%
[20:36:48] [Server thread/INFO]: Preparing spawn area: 57%
[20:36:49] [Server thread/INFO]: Preparing spawn area: 73%
[20:36:50] [Server thread/INFO]: Preparing spawn area: 90%
[20:36:51] [Server thread/INFO]: Changing view distance to 12, from 10
[20:36:52] [Server thread/INFO]: iTimberWolf[local:E:6a8e040e] logged in with entity id 1341 at (-39.5, 63.0, -21.5)
[20:36:52] [Server thread/INFO]: iTimberWolf joined the game
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1. A fatal error has been detected by the Java Runtime Environment:
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2. EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00007ffedc816587, pid=9568, tid=13792
   #

3. JRE version: Java(TM) SE Runtime Environment (8.0_25-b18) (build 1.8.0_25-b18)

4. Java VM: Java HotSpot(TM) 64-Bit Server VM (25.25-b02 mixed mode windows-amd64 compressed oops)

5. Problematic frame:

6. C [ig9icd64.dll+0x16587]
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7. Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
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8. An error report file with more information is saved as:

9. C:\Users\iTimb\AppData\Roaming\.minecraft\hs_err_pid9568.log
   #

10. If you would like to submit a bug report, please visit:

11. http://bugreport.sun.com/bugreport/crash.jsp

12. The crash happened outside the Java Virtual Machine in native code.

13. See problematic frame for where to report the bug.
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    AL lib: (EE) alc_cleanup: 1 device not closed
    Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release