Thread (4 messages) flat view 4 messages, 2 authors, 2025-06-25

Re: [PATCH net] dpaa2-eth: fix xdp_rxq_info leak in dpaa2_eth_setup_rx_flow

From: Fushuai Wang <hidden>
Date: 2025-06-25 12:56:28
Also in: lkml

quoted
When xdp_rxq_info_reg_mem_model() fails after a successful
xdp_rxq_info_reg(), the kernel may leaks the registered RXQ
info structure. Fix this by calling xdp_rxq_info_unreg() in
the error path, ensuring proper cleanup when memory model
registration fails.

Fixes: d678be1dc1ec ("dpaa2-eth: add XDP_REDIRECT support")
Signed-off-by: Fushuai Wang <redacted>
Thanks, I agree this is needed.

Reviewed-by: Simon Horman <horms@kernel.org>

But I wonder how these resources are released in the following cases:

* Error in dpaa2_eth_bind_dpni() after at least one
  successful call to dpaa2_eth_setup_rx_flow()

* Error in dpaa2_eth_probe() after a successful call to
  dpaa2_eth_bind_dpni()

* Driver removal (dpaa2_eth_remove())
Hi, Simon

I think these paths also leak xdp_rxq_info.
I'll add cleanup for them and send v2 shortly.

--
Regards,
Wang
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