[dpdk-stable] [PATCH] net/i40e: fix data path corrupt on secondary process

[Zhang, Qi Z]

> -----Original Message-----
> From: Yu, DapengX <dapengx.yu at intel.com>
> Sent: Wednesday, June 9, 2021 3:06 PM
> To: Xing, Beilei <beilei.xing at intel.com>
> Cc: dev at dpdk.org; Zhang, Qi Z <qi.z.zhang at intel.com>; Yu, DapengX
> <dapengx.yu at intel.com>; stable at dpdk.org
> Subject: [PATCH] net/i40e: fix data path corrupt on secondary process
> 
> From: Dapeng Yu <dapengx.yu at intel.com>
> 
> The rte_eth_devices array is not in share memory, it should not be referenced
> by i40e_adapter which is shared by primary and secondary.
> Any process set i40e_adapter->eth_dev will corrupt another process'
> context.
> 
> The patch removed the field "eth_dev" from i40e_adapter.
> Now, when the data paths try to access the rte_eth_dev_data instance, they
> should replace adapter->eth_dev->data with adapter->pf.dev_data.
> 
> Fixes: 2bedd7277a10 ("net/i40e: print real global changes")
> Fixes: 4861cde46116 ("i40e: new poll mode driver")
> Fixes: be6c228d4da3 ("i40e: support Rx interrupt")
> Fixes: 8e109464c022 ("i40e: allow vector Rx and Tx usage")
> Fixes: 1d169e9dafb8 ("net/i40e: support cloud filter with L4 port")
> Fixes: a778a1fa2e4e ("i40e: set up and initialize flow director")
> Fixes: 460d1679586e ("drivers/net: delete HW rings while freeing queues")
> Fixes: b0ea2716e05b ("net/i40e: add flow flush function")
> Fixes: ef4c16fd9148 ("net/i40e: refactor RSS flow")
> Fixes: 819a5c14d1dd ("net/i40e: fix null checks")
> Fixes: e0cb96204b71 ("net/i40e: add support for representor ports")

Just need to list the patch that bring the issue (in this case it is the one that add a non-shared point into a structure that will be shared)
, all following up patches are not guilty.

> Cc: stable at dpdk.org
> 
> Signed-off-by: Dapeng Yu <dapengx.yu at intel.com>