Why are there "Unknown ioctl" messages in the system log?
Issue
I check the log file messages, find out a lot of record of following output:
Apr 20 18:04:19 mysystem kernel: myprog[14317]: Unknown ioctl 4712
Apr 20 18:04:19 mysystem kernel: myprog[14317]: Unknown ioctl 8837
Apr 20 18:04:19 mysystem kernel: myprog[14317]: Unknown ioctl -2146954638
Apr 20 18:04:19 mysystem kernel: myprog[14317]: Unknown ioctl 4712
Apr 20 18:19:19 mysystem kernel: myprog[14317]: Unknown ioctl -2146954638
Apr 20 18:19:19 mysystem kernel: myprog[14317]: Unknown ioctl 4712
Apr 20 18:19:19 mysystem kernel: myprog[14317]: Unknown ioctl 8837
Apr 20 18:19:19 mysystem kernel: myprog[14317]: Unknown ioctl -2146954638
Apr 20 18:19:19 mysystem kernel: myprog[14317]: Unknown ioctl 4712
Apr 20 18:34:19 mysystem kernel: myprog[14317]: Unknown ioctl -2146954638
Apr 20 18:34:19 mysystem kernel: myprog[14317]: Unknown ioctl 4712
Jul 15 00:26:03 mysystem kernel: VSock[10851]: Unknown ioctl -2146954638
Jul 15 00:26:03 mysystem kernel: VSock[10851]: Unknown ioctl 4712
Environment
Red Hat Enterprise Linux
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