Greg KH <[email protected]> wrote:
>
> Hi,
>
> I spent some time tonight trying to track down how to fix the issue of
> duplicate sysfs files and/or directories. This happens when you try to
> create a kobject with the same name in the same directory. The creation
> of the second kobject will fail, but the directory will remain in sysfs.
>
> Now I know this isn't a normal operation, but it would be good to fix
> this eventually. I traced the issue down to fs/sysfs/dir.c:create_dir()
> and the check for:
> if (error && (error != -EEXIST)) {
>
> Problem is, error is set to -EEXIST, so we don't clean up properly. Now
> I know we can't just not check for this, as if you do that error
> cleanup, the original kobject's sysfs entry gets very messed up (ls -l
> does not like it at all...)
>
> But I can't seem to figure out what exactly we need to do to clean up
> properly here.
>
> Do you, or anyone else, have any pointers or ideas?
>
Emit a loud warning and don't bother cleaning up - leave the current
behaviour as-is. Whatever takes the least amount code and has the minimum
end-user impact, IMO.
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