crash on servers

Minecraft is crashing while on servers within a few seconds of joining.

Description:

[17:59:56] [Client thread/INFO]: Setting user: somkiestar123
[17:59:56] [Client thread/INFO]: (Session ID is token:a7f1eb65653341359ab0ec47e075a498:1a131058e47443aa86e7928f9597d10c)
[17:59:58] [Client thread/INFO]: LWJGL Version: 2.9.1
[17:59:58] [Client thread/INFO]: Reloading ResourceManager: Default
[18:00:00] [Sound Library Loader/INFO]: Starting up SoundSystem...
[18:00:00] [Thread-6/INFO]: Initializing LWJGL OpenAL
[18:00:00] [Thread-6/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[18:00:00] [Thread-6/INFO]: OpenAL initialized.
[18:00:00] [Sound Library Loader/INFO]: Sound engine started
[18:00:02] [Client thread/INFO]: Created: 512x512 textures-atlas
[18:00:14] [Client thread/INFO]: Connecting to mc.obsidianprison.com., 25565
[18:00:17] [Client thread/INFO]: [CHAT]
[18:00:17] [Client thread/INFO]: [CHAT] [mcMMO] Running version 1.5.00-b3547
[18:00:17] [Client thread/INFO]: [CHAT] [mcMMO] http://dev.bukkit.org/server-mods/mcmmo/ - mcMMO Website
[18:00:21] [Client thread/INFO]: [CHAT] [D] BobBounce s
[18:00:21] [Client thread/INFO]: [CHAT] <3 [

] [

]Spazh0le[

] / Master
[18:00:22] [Client thread/INFO]: [CHAT] [

] [

]Melted[

] xDDDDDDD
[18:00:25] [Client thread/INFO]: [CHAT] [!Prestige[1!]xXAkiraFirepawXx lmao
[18:00:28] [Client thread/INFO]: [CHAT] [Bonus!] sriram2005 has got a 2.4x Multiplier for 5 minutes by being Obsidian! /vote!
[18:00:28] [Client thread/INFO]: [CHAT] [Bonus!] sriram2005 has got a 1.9x Multiplier for 5 minutes by being Coal Rank! /vote!
[18:00:28] [Client thread/INFO]: [CHAT] [DoubleVotes] sriram2005 has voted and got 2 Pixls! and a 2.0x 10min Sell Buff! /vote & /rewards!
[18:00:30] [Netty Client IO #4/ERROR]: Invalid server icon (unknown format)
#

1. A fatal error has been detected by the Java Runtime Environment:
   #

2. EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x000000001c68c933, pid=10980, tid=4936
   #

3. JRE version: Java(TM) SE Runtime Environment (8.0_40-b26) (build 1.8.0_40-b26)

4. Java VM: Java HotSpot(TM) 64-Bit Server VM (25.40-b25 mixed mode windows-amd64 compressed oops)

5. Problematic frame:

6. C [ig7icd64.dll+0x6c933]
   #

7. Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
   #

8. An error report file with more information is saved as:

9. C:\Users\Eric\AppData\Roaming\.minecraft\hs_err_pid10980.log
   #

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

11. http://bugreport.java.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.
    #
    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