On 10/21/2021 3:24 AM, Huisong Li wrote:

In secondary process, rte_eth_dev_close() doesn't clear eth_dev->data.
If calling rte_dev_remove() after rte_eth_dev_close(),
in rte_eth_dev_pci_generic_remove() function, the released eth device still
can be found by its name in shared memory. As a result, the eth device will
be released repeatedly. The state of the eth device is modified to
RTE_ETH_DEV_UNUSED after rte_eth_dev_close(). So this state can be used to
avoid this problem.

Fixes: dcd5c8112bc3 ("ethdev: add PCI driver helpers")
Cc: stable@dpdk.org

Signed-off-by: Huisong Li <lihuisong@huawei.com>

Reviewed-by: Ferruh Yigit <redacted>

Applied to dpdk-next-net/main, thanks.