kernel: sysctl table check failed:/dev/parport/parport0/devices/ppdev0/timeslice Sysctl already exists

[Dave Jones]

Well, that's umm, special.
I wonder if powering off the printer isn't causing the sysctl to be removed,
causing the next power-on to look like a new device ?
Eric, you poked around the sysctl paths in parport last year, any ideas?

	Dave

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> https://bugzilla.redhat.com/show_bug.cgi?id=449112
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>            Summary: kernel:<3>sysctl table check failed:
>                     /dev/parport/parport0/devices/ppdev0/timeslice  Sysctl
>                     already exists
>            Product: Fedora
>            Version: rawhide
>           Platform: All
>         OS/Version: Linux
>             Status: NEW
>           Severity: low
>           Priority: low
>          Component: kernel
>         AssignedTo: kernel-maint@xxxxxxxxxx
>         ReportedBy: selinux@xxxxxxxxx
>          QAContact: extras-qa@xxxxxxxxxxxxxxxxx
>
>
> Description of problem:
> Get the following in dmesg. I had "printed" to an HP5MP printer from firefox,
> but the printer was powered off.  I turned on the printer, and I believe got these.
>
> ppdev0: registered pardevice
> sysctl table check failed: /dev/parport/parport0/devices/ppdev0/timeslice 
> Sysctl already exists
> Pid: 3921, comm: hp Not tainted 2.6.26-0.44.rc4.git2.fc10.i686 #1
>  [<c04407ae>] set_fail+0x33/0x40
>  [<c0440bc4>] sysctl_check_table+0x409/0x445
>  [<c0440bda>] sysctl_check_table+0x41f/0x445
>  [<c0440bda>] sysctl_check_table+0x41f/0x445
>  [<c0440bda>] sysctl_check_table+0x41f/0x445
>  [<c0440bda>] sysctl_check_table+0x41f/0x445
>  [<c0440bda>] sysctl_check_table+0x41f/0x445
>  [<c043148c>] __register_sysctl_paths+0xa7/0xf9
>  [<c04314fc>] register_sysctl_paths+0x1e/0x20
>  [<c043150d>] register_sysctl_table+0xf/0x11
>  [<f8db831f>] parport_device_proc_register+0xa9/0xc7 [parport]
>  [<f8db6b2c>] parport_register_device+0x1c1/0x1eb [parport]
>  [<f8dfe328>] pp_ioctl+0x12e/0x6b2 [ppdev]
>  [<f8dfe8ac>] ? pp_irq+0x0/0x43 [ppdev]
>  [<c04982ac>] vfs_ioctl+0x50/0x69
>  [<c04984fe>] do_vfs_ioctl+0x239/0x24c
>  [<c04df7dc>] ? selinux_file_ioctl+0x35/0x38
>  [<c0498551>] sys_ioctl+0x40/0x5b
>  [<c0404c3a>] syscall_call+0x7/0xb
>  =======================
> ppdev0: registered pardevice
> sysctl table check failed: /dev/parport/parport0/devices/ppdev0/timeslice 
> Sysctl already exists
> Pid: 3921, comm: hp Not tainted 2.6.26-0.44.rc4.git2.fc10.i686 #1
>  [<c04407ae>] set_fail+0x33/0x40
>  [<c0440bc4>] sysctl_check_table+0x409/0x445
>  [<c0440bda>] sysctl_check_table+0x41f/0x445
>  [<c0440bda>] sysctl_check_table+0x41f/0x445
>  [<c0440bda>] sysctl_check_table+0x41f/0x445
>  [<c0440bda>] sysctl_check_table+0x41f/0x445
>  [<c0440bda>] sysctl_check_table+0x41f/0x445
>  [<c043148c>] __register_sysctl_paths+0xa7/0xf9
>  [<c04314fc>] register_sysctl_paths+0x1e/0x20
>  [<c043150d>] register_sysctl_table+0xf/0x11
>  [<f8db831f>] parport_device_proc_register+0xa9/0xc7 [parport]
>  [<f8db6b2c>] parport_register_device+0x1c1/0x1eb [parport]
>  [<f8dfe328>] pp_ioctl+0x12e/0x6b2 [ppdev]
>  [<f8dfe8ac>] ? pp_irq+0x0/0x43 [ppdev]
>  [<c04982ac>] vfs_ioctl+0x50/0x69
>  [<c04984fe>] do_vfs_ioctl+0x239/0x24c
>  [<c04df7dc>] ? selinux_file_ioctl+0x35/0x38
>  [<c0498551>] sys_ioctl+0x40/0x5b
>  [<c0404c3a>] syscall_call+0x7/0xb
>  =======================
> ppdev0: registered pardevice
> ppdev0: unregistered pardevice
> ppdev0: unregistered pardevice
> ppdev0: unregistered pardevice
>
>
> Version-Release number of selected component (if applicable):
> kernel-2.6.26-0.44.rc4.git2.fc10.i686
>
> How reproducible:
> Don't know....
>
> Steps to Reproduce:
> 1.
> 2.
> 3.
>   
> Actual results:
>
>
> Expected results:
>
>
> Additional info:
>
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