i2o: check copy_from_user() size parameter
Limit the size of the copy so we don't corrupt memory. Hopefully this can only be called by root, but fixing this makes the static checkers happier. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Masanari Iida <standby24x7@gmail.com> Cc: Alan Cox <alan@linux.intel.com> Cc: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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