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[Xen-devel] [PATCH] Off-by-one in cpu_gdt_init
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | [Xen-devel] [PATCH] Off-by-one in cpu_gdt_init |
| From: | George Washington Dunlap III <dunlapg@xxxxxxxxx> |
| Date: | Mon, 6 Jun 2005 11:35:06 -0400 (EDT) |
| Delivery-date: | Mon, 06 Jun 2005 15:34:19 +0000 |
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I forget what triggered this bug (it was a long time ago), but
cpu_gdt_init() is trying to allocate an array, one per frame, based on
gdt_descr->size. However, the math currently rounds down instead of up!
(I'm pretty sure that when I triggered it, (gdt_descr->size>>PAGE_SHIFT)
was 0.)
-George +-------------------+----------------------------------------| dunlapg@xxxxxxxxx | http://www-personal.umich.edu/~dunlapg +-------------------+---------------------------------------- | Who could move a mountain, who could love their enemy? | Who could rejoice in pain, and turn the other cheek? | - Rich Mullins, "Surely God is With Us" +------------------------------------------------------------ | Outlaw Junk Email! Support HR 1748 (www.cauce.org)
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