Since 0417adf367a0 ("ppp: fix race conditions in ppp_fill_forward_path") dev_fill_forward_path() should be called with RCU read lock held. This fix was applied to net, while the Airoha flowtable commit was applied to net-next, so it hadn't been an issue until net was merged into net-next. Fixes: a9af709fda7e ("Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net") Signed-off-by: Qingfang Deng --- drivers/net/ethernet/airoha/airoha_ppe.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/airoha/airoha_ppe.c b/drivers/net/ethernet/airoha/airoha_ppe.c index ec5ce41dad80..02deb739a1c7 100644 --- a/drivers/net/ethernet/airoha/airoha_ppe.c +++ b/drivers/net/ethernet/airoha/airoha_ppe.c @@ -227,7 +227,9 @@ static int airoha_ppe_get_wdma_info(struct net_device *dev, const u8 *addr, if (!dev) return -ENODEV; + rcu_read_lock(); err = dev_fill_forward_path(dev, addr, &stack); + rcu_read_unlock(); if (err) return err; -- 2.43.0