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| author |   Yunjian Wang <wangyunjian@huawei.com> | 2020-12-29 10:01:48 +0800 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2021-01-04 13:18:52 -0800 |
| commit | 01e31bea7e622f1890c274f4aaaaf8bccd296aa5 (patch) | |
| tree | 2921fb5f2a2e41f54389133e5dbf0b26593422a5 /drivers/usb/cdns3/cdns3-imx.c | |
| parent | bareudp: Fix use of incorrect min_headroom size (diff) | |
| download | linux-dev-01e31bea7e622f1890c274f4aaaaf8bccd296aa5.tar.xz linux-dev-01e31bea7e622f1890c274f4aaaaf8bccd296aa5.zip | |
vhost_net: fix ubuf refcount incorrectly when sendmsg fails
Currently the vhost_zerocopy_callback() maybe be called to decrease
the refcount when sendmsg fails in tun. The error handling in vhost
handle_tx_zerocopy() will try to decrease the same refcount again.
This is wrong. To fix this issue, we only call vhost_net_ubuf_put()
when vq->heads[nvq->desc].len == VHOST_DMA_IN_PROGRESS.
Fixes: bab632d69ee4 ("vhost: vhost TX zero-copy support")
Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/1609207308-20544-1-git-send-email-wangyunjian@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/usb/cdns3/cdns3-imx.c')
0 files changed, 0 insertions, 0 deletions