Commit 7918bb2d19c9 ("vhost: basic in order support") introduces
vq->nheads to store the number of batched used buffers per used elem
but it forgets to initialize the vq->nheads to NULL in
vhost_dev_init() this will cause kfree() that would try to free it
without be allocated if SET_OWNER is not called.Reported-by: JAEHOON KIM <[email protected]> Reported-by: Breno Leitao <[email protected]> Fixes: 7918bb2d19c9 ("vhost: basic in order support") Signed-off-by: Jason Wang <[email protected]> --- drivers/vhost/vhost.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index a4873d116df1..b4dfe38c7008 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -615,6 +615,7 @@ void vhost_dev_init(struct vhost_dev *dev, vq->log = NULL; vq->indirect = NULL; vq->heads = NULL; + vq->nheads = NULL; vq->dev = dev; mutex_init(&vq->mutex); vhost_vq_reset(dev, vq); -- 2.39.5
