mm, hugetlb: remove unnecessary lower bound on sysctl handlers"?
Commit ed4d4902 ("mm, hugetlb: remove hugetlb_zero and hugetlb_infinity") replaced 'unsigned long hugetlb_zero' with 'int zero' leading to out-of-bounds access in proc_doulongvec_minmax(). Use '.extra1 = NULL' instead of '.extra1 = &zero'. Passing NULL is equivalent to passing minimal value, which is 0 for unsigned types. Fixes: ed4d4902 ("mm, hugetlb: remove hugetlb_zero and hugetlb_infinity") Signed-off-by: NAndrey Ryabinin <a.ryabinin@samsung.com> Reported-by: NDmitry Vyukov <dvyukov@google.com> Suggested-by: NManfred Spraul <manfred@colorfullife.com> Acked-by: NDavid Rientjes <rientjes@google.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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