[PATCH v10 06/17] vhost-vdpa: Handle the failure of vdpa_reset()
From: Xie Yongji <hidden>
Date: 2021-07-29 07:36:47
Also in:
kvm, linux-fsdevel, linux-iommu, lkml
Subsystem:
the rest, virtio host (vhost) · Maintainers:
Linus Torvalds, "Michael S. Tsirkin", Jason Wang, Eugenio Pérez
The vdpa_reset() may fail now. This adds check to its return value and fail the vhost_vdpa_open(). Signed-off-by: Xie Yongji <redacted> --- drivers/vhost/vdpa.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c
index dd05c1e1133c..9a00b560abad 100644
--- a/drivers/vhost/vdpa.c
+++ b/drivers/vhost/vdpa.c@@ -116,12 +116,13 @@ static void vhost_vdpa_unsetup_vq_irq(struct vhost_vdpa *v, u16 qid) irq_bypass_unregister_producer(&vq->call_ctx.producer); } -static void vhost_vdpa_reset(struct vhost_vdpa *v) +static int vhost_vdpa_reset(struct vhost_vdpa *v) { struct vdpa_device *vdpa = v->vdpa; - vdpa_reset(vdpa); v->in_batch = 0; + + return vdpa_reset(vdpa); } static long vhost_vdpa_get_device_id(struct vhost_vdpa *v, u8 __user *argp)
@@ -872,7 +873,9 @@ static int vhost_vdpa_open(struct inode *inode, struct file *filep) return -EBUSY; nvqs = v->nvqs; - vhost_vdpa_reset(v); + r = vhost_vdpa_reset(v); + if (r) + goto err; vqs = kmalloc_array(nvqs, sizeof(*vqs), GFP_KERNEL); if (!vqs) {
--
2.11.0