Hi,
From the error looks like there isn't suffice memory for the application. This isn't coming from cmem config as from the logs it depicts the buffers are being allocated by the driver, I am sure this doesn't happen every time or does it ?
try and increase the mem parameter in bootargs, set it to mem=120M, also if you face such issues try and clear the caches by following commands ,
# sync
# echo 1 > /proc/sys/vm/drop_caches # echo 2 > /proc/sys/vm/drop_caches # echo 3 > /proc/sys/vm/drop_caches
Regards,
--Prabhakar Lad