kernel/sysctl.c: define minmax conv functions in terms of non-minmax versions
do_proc_do[u]intvec_minmax_conv() had included open-coded versions of do_proc_do[u]intvec_conv(); the duplication led to buggy inconsistencies (missing range checks). To reduce the likelihood of such problems in the future, we can instead refactor both to be defined in terms of their non-bounded counterparts (plus the added check). Link: http://lkml.kernel.org/r/20190207165138.5oud57vq4ozwb4kh@hatter.bewilderbeest.netSigned-off-by: NZev Weiss <zev@bewilderbeest.net> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Iurii Zaikin <yzaikin@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Luis Chamberlain <mcgrof@kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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