diff options
| author | Michael S. Tsirkin <mst@redhat.com> | 2014-06-18 18:55:22 +0300 |
|---|---|---|
| committer | Michael Roth <mdroth@linux.vnet.ibm.com> | 2014-07-15 19:28:01 -0500 |
| commit | 79bd7781dd0cc4583902f67661cbad8d4d9eecfc (patch) | |
| tree | 655f0cd750ab314ea06a56d43506361f33b9210a | |
| parent | 36afdba00af1ebcf311fa17b8c77402a19fe4492 (diff) | |
| download | qemu-79bd7781dd0cc4583902f67661cbad8d4d9eecfc.tar.gz | |
vhost: fix resource leak in error handling
vhost_verify_ring_mappings leaks mappings on error.
Fix this up.
Cc: qemu-stable@nongnu.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit 8617343faae6ba7e916137c6c9e3ef22c00565d8)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
| -rw-r--r-- | hw/virtio/vhost.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 9e336ad81e..1d349e0c72 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -309,7 +309,9 @@ static int vhost_verify_ring_mappings(struct vhost_dev *dev, uint64_t size) { int i; - for (i = 0; i < dev->nvqs; ++i) { + int r = 0; + + for (i = 0; !r && i < dev->nvqs; ++i) { struct vhost_virtqueue *vq = dev->vqs + i; hwaddr l; void *p; @@ -321,15 +323,15 @@ static int vhost_verify_ring_mappings(struct vhost_dev *dev, p = cpu_physical_memory_map(vq->ring_phys, &l, 1); if (!p || l != vq->ring_size) { fprintf(stderr, "Unable to map ring buffer for ring %d\n", i); - return -ENOMEM; + r = -ENOMEM; } if (p != vq->ring) { fprintf(stderr, "Ring buffer relocated for ring %d\n", i); - return -EBUSY; + r = -EBUSY; } cpu_physical_memory_unmap(p, l, 0, 0); } - return 0; + return r; } static struct vhost_memory_region *vhost_dev_find_reg(struct vhost_dev *dev, |