gve: fix XSK buffer leak when rings are stopped

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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: c1fffc5d66 ("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>

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Joshua Washington 2026-09-30 14:47:33 -07:00 • committed by Jakub Kicinski

parent d4bfe16cbd

commit 73670ddb91

1 changed files with 6 additions and 0 deletions

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6

drivers/net/ethernet/google/gve/gve_rx_dqo.c

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