4.14-stable review patch. If anyone has any objections, please let me know.
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From: Haiyang Zhang haiyangz@microsoft.com
[ Commit 6b0cbe315868d613123cf387052ccda5f09d49ea upstream. ]
tx_table is part of the private data of kernel net_device. It is only zero-ed out when allocating net_device.
We may recreate netvsc_device w/o recreating net_device, so the private netdev data, including tx_table, are not zeroed. It may contain channel numbers for the older netvsc_device.
This patch adds initialization of tx_table each time we recreate netvsc_device.
Signed-off-by: Haiyang Zhang haiyangz@microsoft.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/hyperv/netvsc.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/net/hyperv/netvsc.c +++ b/drivers/net/hyperv/netvsc.c @@ -1252,6 +1252,9 @@ struct netvsc_device *netvsc_device_add( if (!net_device) return ERR_PTR(-ENOMEM);
+ for (i = 0; i < VRSS_SEND_TAB_SIZE; i++) + net_device_ctx->tx_table[i] = 0; + net_device->ring_size = ring_size;
/* Because the device uses NAPI, all the interrupt batching and