[PATCH] coverity: idr_get_new_above_int() overrun fix
This patch fixes overrun of array pa: 92 struct idr_layer *pa[MAX_LEVEL]; in 98 l = idp->layers; 99 pa[l--] = NULL; by passing idp->layers, set in 202 idp->layers = layers; to function sub_alloc in 203 v = sub_alloc(idp, ptr, &id); Signed-off-by: Zaur Kambarov <zkambarov@coverity.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -175,7 +175,7 @@ build_up:
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* Add a new layer to the top of the tree if the requested
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* id is larger than the currently allocated space.
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*/
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while ((layers < MAX_LEVEL) && (id >= (1 << (layers*IDR_BITS)))) {
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while ((layers < (MAX_LEVEL - 1)) && (id >= (1 << (layers*IDR_BITS)))) {
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layers++;
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if (!p->count)
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continue;
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