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authorRoel Kluin <roel.kluin@gmail.com>2009-05-22 09:25:32 +0200
committerJens Axboe <jens.axboe@oracle.com>2009-05-22 09:59:51 +0200
commitb9ed7252d219c1c663944bf03846eabb515dbe75 (patch)
tree9582f1255e501c5111ac88dbbba4a1f90beb223c /drivers/block
parent0a7ae2ff0d29bb3b327edff4c8ab67b3834fa811 (diff)
downloadlinux-b9ed7252d219c1c663944bf03846eabb515dbe75.tar.bz2
xen-blkfront: beyond ARRAY_SIZE of info->shadow
Do not go beyond ARRAY_SIZE of info->shadow Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/xen-blkfront.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 6d4ac76c2806..6d5950839bd0 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -122,7 +122,7 @@ static DEFINE_SPINLOCK(blkif_io_lock);
static int get_id_from_freelist(struct blkfront_info *info)
{
unsigned long free = info->shadow_free;
- BUG_ON(free > BLK_RING_SIZE);
+ BUG_ON(free >= BLK_RING_SIZE);
info->shadow_free = info->shadow[free].req.id;
info->shadow[free].req.id = 0x0fffffee; /* debug */
return free;