From e1db8c2a01d7e12bd566106fbeefa3c5cccd2003 Mon Sep 17 00:00:00 2001 From: Michal Schmidt Date: Mon, 23 Oct 2023 12:59:53 +0200 Subject: [PATCH] ice: lag: in RCU, use atomic allocation Sleeping is not allowed in RCU read-side critical sections. Use atomic allocations under rcu_read_lock. Fixes: 1e0f9881ef79 ("ice: Flesh out implementation of support for SRIOV on bonded interface") Fixes: 41ccedf5ca8f ("ice: implement lag netdev event handler") Fixes: 3579aa86fb40 ("ice: update reset path for SRIOV LAG support") Signed-off-by: Michal Schmidt Reviewed-by: Wojciech Drewek Tested-by: Pucha Himasekhar Reddy (A Contingent worker at Intel) Reviewed-by: Simon Horman Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/ice/ice_lag.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/intel/ice/ice_lag.c b/drivers/net/ethernet/intel/ice/ice_lag.c index 95e46bde54fe..cd065ec48c87 100644 --- a/drivers/net/ethernet/intel/ice/ice_lag.c +++ b/drivers/net/ethernet/intel/ice/ice_lag.c @@ -628,7 +628,7 @@ void ice_lag_move_new_vf_nodes(struct ice_vf *vf) INIT_LIST_HEAD(&ndlist.node); rcu_read_lock(); for_each_netdev_in_bond_rcu(lag->upper_netdev, tmp_nd) { - nl = kzalloc(sizeof(*nl), GFP_KERNEL); + nl = kzalloc(sizeof(*nl), GFP_ATOMIC); if (!nl) break; @@ -1692,7 +1692,7 @@ ice_lag_event_handler(struct notifier_block *notif_blk, unsigned long event, rcu_read_lock(); for_each_netdev_in_bond_rcu(upper_netdev, tmp_nd) { - nd_list = kzalloc(sizeof(*nd_list), GFP_KERNEL); + nd_list = kzalloc(sizeof(*nd_list), GFP_ATOMIC); if (!nd_list) break; @@ -2069,7 +2069,7 @@ void ice_lag_rebuild(struct ice_pf *pf) INIT_LIST_HEAD(&ndlist.node); rcu_read_lock(); for_each_netdev_in_bond_rcu(lag->upper_netdev, tmp_nd) { - nl = kzalloc(sizeof(*nl), GFP_KERNEL); + nl = kzalloc(sizeof(*nl), GFP_ATOMIC); if (!nl) break; -- 2.25.1