Processes owned by user "lp" are consuming lots of CPU time in RHEL

Issue

• A Canon printer driver has high CPU load.

• The user lp owns processes that are consuming a lot of CPU. For example:

  # top
  top - 14:19:57 up 18 days, 10:27,  2 users,  load average: 6.96, 6.90, 6.90
  Tasks: 506 total,   7 running, 494 sleeping,   0 stopped,   5 zombie
  Cpu(s): 19.7%us, 80.3%sy,  0.0%ni,  0.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
  
  PID   USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
  31870 lp        20   0 19868  10m 2476 R 97.1  0.1   7269:54 c3pldrv
  19821 lp        20   0 22880  13m 2400 R 88.5  0.1   7486:19 c3pldrv
  11619 lp        20   0 22880  12m 2412 R 51.1  0.1   7235:47 c3pldrv
  30744 lp        20   0 22816  13m 2524 R 50.4  0.1  15939:36 c3pldrv
  12335 lp        20   0 19708  10m 2480 R 50.1  0.1   7256:25 c3pldrv
  31718 lp        20   0  4396  888  508 R 49.1  0.0  15948:45 cnpkmoduleufr2