The "alloc_size" calculation can overflow leading to memory corruption.
Reviewed-by: NChristian König <christian.koenig@amd.com>
Reported-by: NIlja Van Sprundel <ivansprundel@ioactive.com>
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>