Because the libc is calling it again based on what has been passed as argument and what was received as return value. Here is one example https://gist.github.com/gkos/5479135. I don't really know if this code is working since I made it a long time ago.
Regards, 2016-10-04 12:05 GMT-03:00 Greg KH <g...@kroah.com>: > On Tue, Oct 04, 2016 at 10:58:16AM -0400, Kenneth Adam Miller wrote: > > I have a character device that I am calling write on and which is > succeeding, > > but which is repeatedly executing. I have hard coded the return value to > one, > > so I don't think the userland standard library is retrying but I could be > > wrong. Can anybody tell me why write would be re-executed by the kernel > and how > > to fix it? I dont actually copy_from_user, I just need this in order to > signal > > kernel land. > > Do you have a pointer to your code somewhere? This is a very common bug > that people have... > > thanks, > > greg k-h > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@kernelnewbies.org > https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > -- *"Do or do not. There is no try"* *Yoda Master*
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