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[PATCH] coverity: idr_get_new_above_int() overrun fix

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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>
This commit is contained in:
Zaur Kambarov 2005-06-21 17:14:31 -07:00 committed by Linus Torvalds
parent 3a845099b2
commit 589777eab7
1 changed files with 1 additions and 1 deletions
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2
lib/idr.c
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@ -175,7 +175,7 @@ build_up:
* Add a new layer to the top of the tree if the requested
* id is larger than the currently allocated space.
*/
while ((layers < MAX_LEVEL) && (id >= (1 << (layers*IDR_BITS)))) {
while ((layers < (MAX_LEVEL - 1)) && (id >= (1 << (layers*IDR_BITS)))) {
layers++;
if (!p->count)
continue;