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| author | Roel Kluin <roel.kluin@gmail.com> | 2009-05-22 09:25:32 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-05-22 09:59:51 +0200 |
| commit | b9ed7252d219c1c663944bf03846eabb515dbe75 (patch) | |
| tree | 9582f1255e501c5111ac88dbbba4a1f90beb223c /drivers/block/xen-blkfront.c | |
| parent | block: change the tag sync vs async restriction logic (diff) | |
| download | linux-b9ed7252d219c1c663944bf03846eabb515dbe75.tar.xz linux-b9ed7252d219c1c663944bf03846eabb515dbe75.zip | |
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/xen-blkfront.c')
| -rw-r--r-- | drivers/block/xen-blkfront.c | 2 |
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; |