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Commit b9ed7252 authored by Roel Kluin's avatar Roel Kluin Committed by Jens Axboe
Browse files

xen-blkfront: beyond ARRAY_SIZE of info->shadow 



Do not go beyond ARRAY_SIZE of info->shadow
Signed-off-by: default avatarRoel Kluin <roel.kluin@gmail.com>
Acked-by: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent 0a7ae2ff

drivers/block/xen-blkfront.c

+1 −1
Original line number Diff line number Diff line
@@ -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;