gve: fix XSK buffer leak when rings are stopped

GVE does not free XSK buffers when resetting ring state as a part of
stopping queues. This causes all XSK buffers which are posted to the
NIC to be leaked.

Free XSK buffers attached to an allocated buf_state when stopping rings.

This issue was hit in production.

Fixes: c1fffc5d66a7 ("gve: implement DQO RX datapath and control path for AF_XDP zero-copy")
Cc: stable@vger.kernel.org
Reviewed-by: Tim Hostetler <thostet@google.com>
Reviewed-by: Jordan Rhee <jordanrhee@google.com>
Signed-off-by: Joshua Washington <joshwash@google.com>
Link: https://patch.msgid.link/20260930214735.3288780-2-joshwash@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

0 files changed, 0 insertions, 0 deletions