cuda-gdb internal error...

warning: Unmapped DWARF Register #83886081 encountered.
warning: Unmapped DWARF Register #83886081 encountered.
cuda-gdb/7.6/gdb/regcache.c:178: internal-error: register_size: Assertion regnum >= 0 && regnum < (gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch))' failed. A problem internal to GDB has been detected, further debugging may prove unreliable. Quit this debugging session? (y or n) [answered Y; input not from terminal] cuda-gdb/7.6/gdb/regcache.c:178: internal-error: register_size: Assertion regnum >= 0 && regnum < (gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch))’ failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) [answered Y; input not from terminal]

cause for concern?