From e1db8c2a01d7e12bd566106fbeefa3c5cccd2003 Mon Sep 17 00:00:00 2001
From: Michal Schmidt <mschmidt@redhat.com>
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 <mschmidt@redhat.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
---
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 95e46bde54fe7..cd065ec48c87e 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;
--
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