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ice: Fix memory leak in ice_set_ringparam()

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In ice_set_ringparam, tx_rings and xdp_rings are allocated before
rx_rings. If the allocation of rx_rings fails, the code jumps to
the done label leaking both tx_rings and xdp_rings. Furthermore, if
the setup of an individual Rx ring fails during the loop, the code jumps
to the free_tx label which releases tx_rings but leaks xdp_rings.

Fix this by introducing a free_xdp label and updating the error paths to
ensure both xdp_rings and tx_rings are properly freed if rx_rings
allocation or setup fails.

Compile tested only. Issue found using a prototype static analysis tool
and code review.

Fixes: fcea6f3da5 ("ice: Add stats and ethtool support")
Fixes: efc2214b60 ("ice: Add support for XDP")
Signed-off-by: Zilin Guan <zilin@seu.edu.cn>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This commit is contained in:
Zilin Guan 2026-01-22 03:26:44 +00:00 • committed by Tony Nguyen
parent fb4903b335
commit fe868b499d
1 changed files with 9 additions and 2 deletions
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11
drivers/net/ethernet/intel/ice/ice_ethtool.c
View file

@ -3332,7 +3332,7 @@ process_rx:
rx_rings = kzalloc_objs(*rx_rings, vsi->num_rxq);
if (!rx_rings) {
err = -ENOMEM;
goto done;
goto free_xdp;
}
ice_for_each_rxq(vsi, i) {
@ -3359,7 +3359,7 @@ rx_unwind:
}
kfree(rx_rings);
err = -ENOMEM;
goto free_tx;
goto free_xdp;
}
}
@ -3411,6 +3411,13 @@ process_link:
}
goto done;
free_xdp:
if (xdp_rings) {
ice_for_each_xdp_txq(vsi, i)
ice_free_tx_ring(&xdp_rings[i]);
kfree(xdp_rings);
}
free_tx:
/* error cleanup if the Rx allocations failed after getting Tx */
if (tx_rings) {