Re: [PATCH] Check copy_*_user return value in drivers/block/scsi_ioctl.c

[Oliver Neukum (oliver@neukum.org)]

Am Sonntag, 25. Mai 2003 18:28 schrieb Jens Axboe:
> On Sun, May 25 2003, Paulo Andre' wrote:
> > Hi Jens,
> >
> > Please find attached a trivial patch that checks both
> > copy_to_user() and copy_from_user() returns values in scsi_ioctl.c,
> > returning accordinly in case of a transfer error.
>
> See above, we've already done access_ok() on the buffer so the
> "unchecked" copy_to/from_user are done that way on purpose. I suppose it
> could be made more explicit with __copy_to/from_user().

Doesn't this race with munmap on SMP?

	Regards
		Oliver

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