Enable kgdb break in DC

configname: CONFIG_DEBUG_KERNEL_DC

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
└─>Display Engine Configuration
└─>Enable kgdb break in DC
In linux kernel since version 4.2 (release Date: 2015-08-30)  
Choose this option if you want to hit kdgb_break in assert.