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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-03 11:07:32 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-03 11:07:32 -0800 |
| commit | f4bd9822080ece335663245c8520b146d9e1bdad (patch) | |
| tree | 5718c3b84741c97b1aba4d777a9ef88f37a9a6fd | |
| parent | 52ad12966b0217a6dcf782cc2516061343911c0d (diff) | |
| parent | e1f33be9186363da7955bcb5f0b03e6685544c50 (diff) | |
| download | kvm-f4bd9822080ece335663245c8520b146d9e1bdad.tar.gz | |
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull minor virtio/vhost fixes from Michael Tsirkin:
"This fixes two minor bugs: error handling in vhost, and capability
processing in virtio"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
vhost: fix error path in vhost_init_used()
virtio-pci: read the right virtio_pci_notify_cap field
| -rw-r--r-- | drivers/vhost/vhost.c | 15 | ||||
| -rw-r--r-- | drivers/virtio/virtio_pci_modern.c | 2 |
2 files changed, 12 insertions, 5 deletions
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index ad2146a9ab2d4b..236553e81027c1 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -1156,6 +1156,8 @@ int vhost_init_used(struct vhost_virtqueue *vq) { __virtio16 last_used_idx; int r; + bool is_le = vq->is_le; + if (!vq->private_data) { vq->is_le = virtio_legacy_is_little_endian(); return 0; @@ -1165,15 +1167,20 @@ int vhost_init_used(struct vhost_virtqueue *vq) r = vhost_update_used_flags(vq); if (r) - return r; + goto err; vq->signalled_used_valid = false; - if (!access_ok(VERIFY_READ, &vq->used->idx, sizeof vq->used->idx)) - return -EFAULT; + if (!access_ok(VERIFY_READ, &vq->used->idx, sizeof vq->used->idx)) { + r = -EFAULT; + goto err; + } r = __get_user(last_used_idx, &vq->used->idx); if (r) - return r; + goto err; vq->last_used_idx = vhost16_to_cpu(vq, last_used_idx); return 0; +err: + vq->is_le = is_le; + return r; } EXPORT_SYMBOL_GPL(vhost_init_used); diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c index c0c11fad4611a7..7760fc1a2218e9 100644 --- a/drivers/virtio/virtio_pci_modern.c +++ b/drivers/virtio/virtio_pci_modern.c @@ -679,7 +679,7 @@ int virtio_pci_modern_probe(struct virtio_pci_device *vp_dev) pci_read_config_dword(pci_dev, notify + offsetof(struct virtio_pci_notify_cap, - cap.length), + cap.offset), ¬ify_offset); /* We don't know how many VQs we'll map, ahead of the time. |