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| author |   Greg Kurz <groug@kaod.org> | 2018-01-22 22:02:05 +0100 |
|---|---|---|
| committer |   Michael S. Tsirkin <mst@redhat.com> | 2018-02-09 20:08:19 +0200 |
| commit | 26d99834f89e76514076d9cd06f61e56e6a509b8 (patch) | |
| tree | 0098d208ff8f3788c37cc4f25087fe5853e7c483 /drivers/s390/virtio | |
| parent | vhost: don't hold onto file pointer for VHOST_SET_LOG_FD (diff) | |
| download | linux-dev-26d99834f89e76514076d9cd06f61e56e6a509b8.tar.xz linux-dev-26d99834f89e76514076d9cd06f61e56e6a509b8.zip | |
9p/trans_virtio: discard zero-length reply
When a 9p request is successfully flushed, the server is expected to just
mark it as used without sending a 9p reply (ie, without writing data into
the buffer). In this case, virtqueue_get_buf() will return len == 0 and
we must not report a REQ_STATUS_RCVD status to the client, otherwise the
client will erroneously assume the request has not been flushed.
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/s390/virtio')
0 files changed, 0 insertions, 0 deletions