The rtnl_lock would stay locked if allocating promisc_allmulti failed.
Reported-by: Eric Dumazet <eduma...@google.com>
Link:
https://lore.kernel.org/netdev/cann89ilazvaucvhpm6rpjj0owra_ofnx7fhc8d60gv-65ad...@mail.gmail.com/
Signed-off-by: Daniel Jurgens <dani...@nvidia.com>
---
drivers/net/virtio_net.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 19a9b50646c7..e2b7488f375e 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -2902,14 +2902,14 @@ static void virtnet_rx_mode_work(struct work_struct
*work)
if (!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_RX))
return;
- rtnl_lock();
-
promisc_allmulti = kzalloc(sizeof(*promisc_allmulti), GFP_ATOMIC);
if (!promisc_allmulti) {
dev_warn(&dev->dev, "Failed to set RX mode, no memory.\n");
return;
}
+ rtnl_lock();
+
*promisc_allmulti = !!(dev->flags & IFF_PROMISC);
sg_init_one(sg, promisc_allmulti, sizeof(*promisc_allmulti));
--
2.45.0
