xfrm: remove VLA usage in __xfrm6_sort()
In the quest to remove all stack VLA usage removed from the kernel[1], just use XFRM_MAX_DEPTH as already done for the "class" array. In one case, it'll do this loop up to 5, the other caller up to 6. [1] https://lkml.org/lkml/2018/3/7/621 Co-developed-by: Andreas Christoforou <andreaschristofo@gmail.com> Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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cd027a5433
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c926ca1605
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@ -60,11 +60,9 @@ xfrm6_init_temprop(struct xfrm_state *x, const struct xfrm_tmpl *tmpl,
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static int
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static int
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__xfrm6_sort(void **dst, void **src, int n, int (*cmp)(void *p), int maxclass)
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__xfrm6_sort(void **dst, void **src, int n, int (*cmp)(void *p), int maxclass)
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{
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{
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int i;
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int count[XFRM_MAX_DEPTH] = { };
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int class[XFRM_MAX_DEPTH];
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int class[XFRM_MAX_DEPTH];
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int count[maxclass];
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int i;
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memset(count, 0, sizeof(count));
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for (i = 0; i < n; i++) {
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for (i = 0; i < n; i++) {
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int c;
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int c;
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