* [RFC PATCH 0/2] bpf: do not WARN in bpf_warn_invalid_xdp_action()
@ 2021-11-15 16:10 Paolo Abeni
2021-11-15 16:10 ` [RFC PATCH 1/2] " Paolo Abeni
2021-11-15 16:10 ` [RFC PATCH 2/2] bpf: let bpf_warn_invalid_xdp_action() report more info Paolo Abeni
0 siblings, 2 replies; 11+ messages in thread
From: Paolo Abeni @ 2021-11-15 16:10 UTC (permalink / raw)
To: netdev
Cc: Alexei Starovoitov, Daniel Borkmann, bpf,
Toke Høiland-Jørgensen
The mentioned WARN is quite noisy, especially vs fuzzers and
apparently used only to track the relevant BPF program and/or
involved driver.
The first patch replace it with a pr_warn_once(), and the 2nd
patch allow dumps relevant info to track the reported issue.
This is quite invasive, but the mentioned WARN makes the hunt
for some bugs reported by syzkaller quite difficult.
Paolo Abeni (2):
bpf: do not WARN in bpf_warn_invalid_xdp_action()
bpf: let bpf_warn_invalid_xdp_action() report more info
drivers/net/ethernet/amazon/ena/ena_netdev.c | 2 +-
drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 2 +-
drivers/net/ethernet/cavium/thunder/nicvf_main.c | 2 +-
drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 2 +-
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 2 +-
drivers/net/ethernet/freescale/enetc/enetc.c | 2 +-
drivers/net/ethernet/intel/i40e/i40e_txrx.c | 2 +-
drivers/net/ethernet/intel/i40e/i40e_xsk.c | 2 +-
drivers/net/ethernet/intel/ice/ice_txrx.c | 2 +-
drivers/net/ethernet/intel/ice/ice_xsk.c | 2 +-
drivers/net/ethernet/intel/igb/igb_main.c | 2 +-
drivers/net/ethernet/intel/igc/igc_main.c | 2 +-
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 +-
drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c | 2 +-
drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 2 +-
drivers/net/ethernet/marvell/mvneta.c | 2 +-
drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 2 +-
drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c | 2 +-
drivers/net/ethernet/mellanox/mlx4/en_rx.c | 2 +-
drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c | 2 +-
drivers/net/ethernet/netronome/nfp/nfp_net_common.c | 2 +-
drivers/net/ethernet/qlogic/qede/qede_fp.c | 2 +-
drivers/net/ethernet/sfc/rx.c | 2 +-
drivers/net/ethernet/socionext/netsec.c | 2 +-
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
drivers/net/ethernet/ti/cpsw_priv.c | 2 +-
drivers/net/hyperv/netvsc_bpf.c | 2 +-
drivers/net/tun.c | 2 +-
drivers/net/veth.c | 4 ++--
drivers/net/virtio_net.c | 4 ++--
drivers/net/xen-netfront.c | 2 +-
include/linux/filter.h | 2 +-
kernel/bpf/cpumap.c | 4 ++--
kernel/bpf/devmap.c | 4 ++--
net/core/dev.c | 2 +-
net/core/filter.c | 8 ++++----
36 files changed, 43 insertions(+), 43 deletions(-)
--
2.33.1
^ permalink raw reply [flat|nested] 11+ messages in thread
* [RFC PATCH 1/2] bpf: do not WARN in bpf_warn_invalid_xdp_action()
2021-11-15 16:10 [RFC PATCH 0/2] bpf: do not WARN in bpf_warn_invalid_xdp_action() Paolo Abeni
@ 2021-11-15 16:10 ` Paolo Abeni
2021-11-15 16:20 ` Toke Høiland-Jørgensen
2021-11-15 16:10 ` [RFC PATCH 2/2] bpf: let bpf_warn_invalid_xdp_action() report more info Paolo Abeni
1 sibling, 1 reply; 11+ messages in thread
From: Paolo Abeni @ 2021-11-15 16:10 UTC (permalink / raw)
To: netdev
Cc: Alexei Starovoitov, Daniel Borkmann, bpf,
Toke Høiland-Jørgensen
The WARN_ONCE() in bpf_warn_invalid_xdp_action() can be triggered by
any bugged program, and even attaching a correct program to a NIC
not supporting the given action.
The resulting splat, beyond polluting the logs, fouls automated tools:
e.g. a syzkaller reproducers using an XDP program returning an
unsupported action will never pass validation.
Replace the WARN_ONCE with a less intrusive pr_warn_once().
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
net/core/filter.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/core/filter.c b/net/core/filter.c
index e471c9b09670..3ba584bb23f8 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -8183,9 +8183,9 @@ void bpf_warn_invalid_xdp_action(u32 act)
{
const u32 act_max = XDP_REDIRECT;
- WARN_ONCE(1, "%s XDP return value %u, expect packet loss!\n",
- act > act_max ? "Illegal" : "Driver unsupported",
- act);
+ pr_warn_once("%s XDP return value %u, expect packet loss!\n",
+ act > act_max ? "Illegal" : "Driver unsupported",
+ act);
}
EXPORT_SYMBOL_GPL(bpf_warn_invalid_xdp_action);
--
2.33.1
^ permalink raw reply related [flat|nested] 11+ messages in thread
* [RFC PATCH 2/2] bpf: let bpf_warn_invalid_xdp_action() report more info
2021-11-15 16:10 [RFC PATCH 0/2] bpf: do not WARN in bpf_warn_invalid_xdp_action() Paolo Abeni
2021-11-15 16:10 ` [RFC PATCH 1/2] " Paolo Abeni
@ 2021-11-15 16:10 ` Paolo Abeni
2021-11-15 16:24 ` Toke Høiland-Jørgensen
1 sibling, 1 reply; 11+ messages in thread
From: Paolo Abeni @ 2021-11-15 16:10 UTC (permalink / raw)
To: netdev
Cc: Alexei Starovoitov, Daniel Borkmann, bpf,
Toke Høiland-Jørgensen
In non trivial scenarios, the single action id is not sufficient
to identify the program causing the warning. Let's additionally
include the program id, the attach type and the relevant device
name.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
drivers/net/ethernet/amazon/ena/ena_netdev.c | 2 +-
drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 2 +-
drivers/net/ethernet/cavium/thunder/nicvf_main.c | 2 +-
drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 2 +-
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 2 +-
drivers/net/ethernet/freescale/enetc/enetc.c | 2 +-
drivers/net/ethernet/intel/i40e/i40e_txrx.c | 2 +-
drivers/net/ethernet/intel/i40e/i40e_xsk.c | 2 +-
drivers/net/ethernet/intel/ice/ice_txrx.c | 2 +-
drivers/net/ethernet/intel/ice/ice_xsk.c | 2 +-
drivers/net/ethernet/intel/igb/igb_main.c | 2 +-
drivers/net/ethernet/intel/igc/igc_main.c | 2 +-
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 +-
drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c | 2 +-
drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 2 +-
drivers/net/ethernet/marvell/mvneta.c | 2 +-
drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 2 +-
drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c | 2 +-
drivers/net/ethernet/mellanox/mlx4/en_rx.c | 2 +-
drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c | 2 +-
drivers/net/ethernet/netronome/nfp/nfp_net_common.c | 2 +-
drivers/net/ethernet/qlogic/qede/qede_fp.c | 2 +-
drivers/net/ethernet/sfc/rx.c | 2 +-
drivers/net/ethernet/socionext/netsec.c | 2 +-
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
drivers/net/ethernet/ti/cpsw_priv.c | 2 +-
drivers/net/hyperv/netvsc_bpf.c | 2 +-
drivers/net/tun.c | 2 +-
drivers/net/veth.c | 4 ++--
drivers/net/virtio_net.c | 4 ++--
drivers/net/xen-netfront.c | 2 +-
include/linux/filter.h | 2 +-
kernel/bpf/cpumap.c | 4 ++--
kernel/bpf/devmap.c | 4 ++--
net/core/dev.c | 2 +-
net/core/filter.c | 6 +++---
36 files changed, 42 insertions(+), 42 deletions(-)
diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c
index 7d5d885d85d5..3b46f1df5609 100644
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c
@@ -434,7 +434,7 @@ static int ena_xdp_execute(struct ena_ring *rx_ring, struct xdp_buff *xdp)
xdp_stat = &rx_ring->rx_stats.xdp_pass;
break;
default:
- bpf_warn_invalid_xdp_action(verdict);
+ bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, verdict);
xdp_stat = &rx_ring->rx_stats.xdp_invalid;
}
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
index c8083df5e0ab..52fad0fdeacf 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
@@ -195,7 +195,7 @@ bool bnxt_rx_xdp(struct bnxt *bp, struct bnxt_rx_ring_info *rxr, u16 cons,
*event |= BNXT_REDIRECT_EVENT;
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(bp->dev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(bp->dev, xdp_prog, act);
diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
index bb45d5df2856..30450efccad7 100644
--- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
@@ -590,7 +590,7 @@ static inline bool nicvf_xdp_rx(struct nicvf *nic, struct bpf_prog *prog,
nicvf_xdp_sq_append_pkt(nic, sq, (u64)xdp.data, dma_addr, len);
return true;
default:
- bpf_warn_invalid_xdp_action(action);
+ bpf_warn_invalid_xdp_action(nic->netdev, prog, action);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(nic->netdev, prog, action);
diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
index 6b2927d863e2..39fafb7d43b2 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
@@ -2623,7 +2623,7 @@ static u32 dpaa_run_xdp(struct dpaa_priv *priv, struct qm_fd *fd, void *vaddr,
}
break;
default:
- bpf_warn_invalid_xdp_action(xdp_act);
+ bpf_warn_invalid_xdp_action(priv->net_dev, xdp_prog, xdp_act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(priv->net_dev, xdp_prog, xdp_act);
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
index 714e961e7a77..f113469bd479 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -374,7 +374,7 @@ static u32 dpaa2_eth_run_xdp(struct dpaa2_eth_priv *priv,
dpaa2_eth_xdp_enqueue(priv, ch, fd, vaddr, rx_fq->flowid);
break;
default:
- bpf_warn_invalid_xdp_action(xdp_act);
+ bpf_warn_invalid_xdp_action(priv->net_dev, xdp_prog, xdp_act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(priv->net_dev, xdp_prog, xdp_act);
diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c
index 504e12554079..eacb41f86bdb 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc.c
@@ -1547,7 +1547,7 @@ static int enetc_clean_rx_ring_xdp(struct enetc_bdr *rx_ring,
switch (xdp_act) {
default:
- bpf_warn_invalid_xdp_action(xdp_act);
+ bpf_warn_invalid_xdp_action(rx_ring->ndev, prog, xdp_act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(rx_ring->ndev, prog, xdp_act);
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
index 10a83e5385c7..b399ca649f09 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
@@ -2322,7 +2322,7 @@ static int i40e_run_xdp(struct i40e_ring *rx_ring, struct xdp_buff *xdp)
result = I40E_XDP_REDIR;
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
out_failure:
diff --git a/drivers/net/ethernet/intel/i40e/i40e_xsk.c b/drivers/net/ethernet/intel/i40e/i40e_xsk.c
index ea06e957393e..945b1bb9c6f4 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_xsk.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_xsk.c
@@ -176,7 +176,7 @@ static int i40e_run_xdp_zc(struct i40e_ring *rx_ring, struct xdp_buff *xdp)
goto out_failure;
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
out_failure:
diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c b/drivers/net/ethernet/intel/ice/ice_txrx.c
index bc3ba19dc88f..56940bb908bc 100644
--- a/drivers/net/ethernet/intel/ice/ice_txrx.c
+++ b/drivers/net/ethernet/intel/ice/ice_txrx.c
@@ -561,7 +561,7 @@ ice_run_xdp(struct ice_rx_ring *rx_ring, struct xdp_buff *xdp,
goto out_failure;
return ICE_XDP_REDIR;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
out_failure:
diff --git a/drivers/net/ethernet/intel/ice/ice_xsk.c b/drivers/net/ethernet/intel/ice/ice_xsk.c
index ff55cb415b11..eb68a5824e9a 100644
--- a/drivers/net/ethernet/intel/ice/ice_xsk.c
+++ b/drivers/net/ethernet/intel/ice/ice_xsk.c
@@ -482,7 +482,7 @@ ice_run_xdp_zc(struct ice_rx_ring *rx_ring, struct xdp_buff *xdp,
goto out_failure;
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
out_failure:
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 836be0d3b291..bdce483d4c0e 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -8422,7 +8422,7 @@ static struct sk_buff *igb_run_xdp(struct igb_adapter *adapter,
result = IGB_XDP_REDIR;
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(adapter->netdev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
out_failure:
diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
index 8e448288ee26..4ea212ddcc9b 100644
--- a/drivers/net/ethernet/intel/igc/igc_main.c
+++ b/drivers/net/ethernet/intel/igc/igc_main.c
@@ -2231,7 +2231,7 @@ static int __igc_xdp_run_prog(struct igc_adapter *adapter,
return IGC_XDP_REDIRECT;
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(adapter->netdev, prog, act);
fallthrough;
case XDP_ABORTED:
out_failure:
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 0f9f022260d7..265bc52aacf8 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -2235,7 +2235,7 @@ static struct sk_buff *ixgbe_run_xdp(struct ixgbe_adapter *adapter,
result = IXGBE_XDP_REDIR;
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
out_failure:
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c
index db2bc58dfcfd..b3fd8e5cd85b 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c
@@ -131,7 +131,7 @@ static int ixgbe_run_xdp_zc(struct ixgbe_adapter *adapter,
goto out_failure;
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
out_failure:
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index d81811ab4ec4..757fe0dace88 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -1070,7 +1070,7 @@ static struct sk_buff *ixgbevf_run_xdp(struct ixgbevf_adapter *adapter,
goto out_failure;
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
out_failure:
diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index 5a7bdca22a63..c457a765a828 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -2212,7 +2212,7 @@ mvneta_run_xdp(struct mvneta_port *pp, struct mvneta_rx_queue *rxq,
mvneta_xdp_put_buff(pp, rxq, xdp, sinfo, sync);
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(pp->dev, prog, act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(pp->dev, prog, act);
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index 2b18d89d9756..e7b7200af5c3 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -3820,7 +3820,7 @@ mvpp2_run_xdp(struct mvpp2_port *port, struct bpf_prog *prog,
}
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(port->dev, prog, act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(port->dev, prog, act);
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
index 0cc6353254bf..7c4068c5d1ac 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
@@ -1198,7 +1198,7 @@ static bool otx2_xdp_rcv_pkt_handler(struct otx2_nic *pfvf,
put_page(page);
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(pfvf->netdev, prog, act);
break;
case XDP_ABORTED:
trace_xdp_exception(pfvf->netdev, prog, act);
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
index 650e6a1844ae..8cfc649f226b 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
@@ -812,7 +812,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
trace_xdp_exception(dev, xdp_prog, act);
goto xdp_drop_no_cnt; /* Drop on xmit failure */
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(dev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(dev, xdp_prog, act);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
index 2f0df5cc1a2d..338d65e2c9ce 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
@@ -151,7 +151,7 @@ bool mlx5e_xdp_handle(struct mlx5e_rq *rq, struct mlx5e_dma_info *di,
rq->stats->xdp_redirect++;
return true;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(rq->netdev, prog, act);
fallthrough;
case XDP_ABORTED:
xdp_abort:
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
index 850bfdf83d0a..56ef3d64e30d 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
@@ -1944,7 +1944,7 @@ static int nfp_net_rx(struct nfp_net_rx_ring *rx_ring, int budget)
xdp_prog, act);
continue;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(dp->netdev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(dp->netdev, xdp_prog, act);
diff --git a/drivers/net/ethernet/qlogic/qede/qede_fp.c b/drivers/net/ethernet/qlogic/qede/qede_fp.c
index 065e9004598e..32c6e14814bb 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_fp.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_fp.c
@@ -1152,7 +1152,7 @@ static bool qede_rx_xdp(struct qede_dev *edev,
qede_rx_bd_ring_consume(rxq);
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(edev->ndev, prog, act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(edev->ndev, prog, act);
diff --git a/drivers/net/ethernet/sfc/rx.c b/drivers/net/ethernet/sfc/rx.c
index 606750938b89..2375cef577e4 100644
--- a/drivers/net/ethernet/sfc/rx.c
+++ b/drivers/net/ethernet/sfc/rx.c
@@ -338,7 +338,7 @@ static bool efx_do_xdp(struct efx_nic *efx, struct efx_channel *channel,
break;
default:
- bpf_warn_invalid_xdp_action(xdp_act);
+ bpf_warn_invalid_xdp_action(efx->net_dev, xdp_prog, xdp_act);
efx_free_rx_buffers(rx_queue, rx_buf, 1);
channel->n_rx_xdp_bad_drops++;
trace_xdp_exception(efx->net_dev, xdp_prog, xdp_act);
diff --git a/drivers/net/ethernet/socionext/netsec.c b/drivers/net/ethernet/socionext/netsec.c
index de7d8bf2c226..25dcd8eda5fc 100644
--- a/drivers/net/ethernet/socionext/netsec.c
+++ b/drivers/net/ethernet/socionext/netsec.c
@@ -933,7 +933,7 @@ static u32 netsec_run_xdp(struct netsec_priv *priv, struct bpf_prog *prog,
}
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(priv->ndev, prog, act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(priv->ndev, prog, act);
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index d3f350c25b9b..4cb34001c9ac 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -4690,7 +4690,7 @@ static int __stmmac_xdp_run_prog(struct stmmac_priv *priv,
res = STMMAC_XDP_REDIRECT;
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(priv->dev, prog, act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(priv->dev, prog, act);
diff --git a/drivers/net/ethernet/ti/cpsw_priv.c b/drivers/net/ethernet/ti/cpsw_priv.c
index ecc2a6b7e28f..e9fdf60ba1a8 100644
--- a/drivers/net/ethernet/ti/cpsw_priv.c
+++ b/drivers/net/ethernet/ti/cpsw_priv.c
@@ -1360,7 +1360,7 @@ int cpsw_run_xdp(struct cpsw_priv *priv, int ch, struct xdp_buff *xdp,
xdp_do_flush_map();
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(ndev, prog, act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(ndev, prog, act);
diff --git a/drivers/net/hyperv/netvsc_bpf.c b/drivers/net/hyperv/netvsc_bpf.c
index aa877da113f8..7856905414eb 100644
--- a/drivers/net/hyperv/netvsc_bpf.c
+++ b/drivers/net/hyperv/netvsc_bpf.c
@@ -68,7 +68,7 @@ u32 netvsc_run_xdp(struct net_device *ndev, struct netvsc_channel *nvchan,
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(ndev, prog, act);
}
out:
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index fecc9a1d293a..0d47d34ba4e7 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1546,7 +1546,7 @@ static int tun_xdp_act(struct tun_struct *tun, struct bpf_prog *xdp_prog,
case XDP_PASS:
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(tun->dev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(tun->dev, xdp_prog, act);
diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index 50eb43e5bf45..f64dbd8b6403 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -651,7 +651,7 @@ static struct xdp_frame *veth_xdp_rcv_one(struct veth_rq *rq,
rcu_read_unlock();
goto xdp_xmit;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(rq->dev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(rq->dev, xdp_prog, act);
@@ -801,7 +801,7 @@ static struct sk_buff *veth_xdp_rcv_skb(struct veth_rq *rq,
rcu_read_unlock();
goto xdp_xmit;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(rq->dev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(rq->dev, xdp_prog, act);
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 1771d6e5224f..105cd413df52 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -812,7 +812,7 @@ static struct sk_buff *receive_small(struct net_device *dev,
rcu_read_unlock();
goto xdp_xmit;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(vi->dev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(vi->dev, xdp_prog, act);
@@ -1025,7 +1025,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
rcu_read_unlock();
goto xdp_xmit;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(vi->dev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(vi->dev, xdp_prog, act);
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index 911f43986a8c..7b7eb617051a 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -930,7 +930,7 @@ static u32 xennet_run_xdp(struct netfront_queue *queue, struct page *pdata,
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(queue->info->netdev, prog, act);
}
return act;
diff --git a/include/linux/filter.h b/include/linux/filter.h
index 24b7ed2677af..c21d14fe0156 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -1030,7 +1030,7 @@ void xdp_do_flush(void);
*/
#define xdp_do_flush_map xdp_do_flush
-void bpf_warn_invalid_xdp_action(u32 act);
+void bpf_warn_invalid_xdp_action(struct net_device *dev, struct bpf_prog *prog, u32 act);
#ifdef CONFIG_INET
struct sock *bpf_run_sk_reuseport(struct sock_reuseport *reuse, struct sock *sk,
diff --git a/kernel/bpf/cpumap.c b/kernel/bpf/cpumap.c
index 585b2b77ccc4..f7359bcb8fa3 100644
--- a/kernel/bpf/cpumap.c
+++ b/kernel/bpf/cpumap.c
@@ -195,7 +195,7 @@ static void cpu_map_bpf_prog_run_skb(struct bpf_cpu_map_entry *rcpu,
}
return;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(skb->dev, rcpu->prog, act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(skb->dev, rcpu->prog, act);
@@ -254,7 +254,7 @@ static int cpu_map_bpf_prog_run_xdp(struct bpf_cpu_map_entry *rcpu,
}
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(xdpf->dev_rx, rcpu->prog, act);
fallthrough;
case XDP_DROP:
xdp_return_frame(xdpf);
diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c
index f02d04540c0c..79bcf2169881 100644
--- a/kernel/bpf/devmap.c
+++ b/kernel/bpf/devmap.c
@@ -348,7 +348,7 @@ static int dev_map_bpf_prog_run(struct bpf_prog *xdp_prog,
frames[nframes++] = xdpf;
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(dev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(dev, xdp_prog, act);
@@ -507,7 +507,7 @@ static u32 dev_map_bpf_prog_run_skb(struct sk_buff *skb, struct bpf_dtab_netdev
__skb_push(skb, skb->mac_len);
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(dst->dev, dst->xdp_prog, act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(dst->dev, dst->xdp_prog, act);
diff --git a/net/core/dev.c b/net/core/dev.c
index 15ac064b5562..cf2691d17dd2 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4824,7 +4824,7 @@ static u32 netif_receive_generic_xdp(struct sk_buff *skb,
case XDP_PASS:
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(skb->dev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(skb->dev, xdp_prog, act);
diff --git a/net/core/filter.c b/net/core/filter.c
index 3ba584bb23f8..348e392a337f 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -8179,13 +8179,13 @@ static bool xdp_is_valid_access(int off, int size,
return __is_valid_xdp_access(off, size);
}
-void bpf_warn_invalid_xdp_action(u32 act)
+void bpf_warn_invalid_xdp_action(struct net_device *dev, struct bpf_prog *prog, u32 act)
{
const u32 act_max = XDP_REDIRECT;
- pr_warn_once("%s XDP return value %u, expect packet loss!\n",
+ pr_warn_once("%s XDP return value %u on prog %d dev %s attach type %d, expect packet loss!\n",
act > act_max ? "Illegal" : "Driver unsupported",
- act);
+ act, prog->aux->id, dev->name, prog->expected_attach_type);
}
EXPORT_SYMBOL_GPL(bpf_warn_invalid_xdp_action);
--
2.33.1
^ permalink raw reply related [flat|nested] 11+ messages in thread
* Re: [RFC PATCH 1/2] bpf: do not WARN in bpf_warn_invalid_xdp_action()
2021-11-15 16:10 ` [RFC PATCH 1/2] " Paolo Abeni
@ 2021-11-15 16:20 ` Toke Høiland-Jørgensen
0 siblings, 0 replies; 11+ messages in thread
From: Toke Høiland-Jørgensen @ 2021-11-15 16:20 UTC (permalink / raw)
To: Paolo Abeni, netdev; +Cc: Alexei Starovoitov, Daniel Borkmann, bpf
Paolo Abeni <pabeni@redhat.com> writes:
> The WARN_ONCE() in bpf_warn_invalid_xdp_action() can be triggered by
> any bugged program, and even attaching a correct program to a NIC
> not supporting the given action.
>
> The resulting splat, beyond polluting the logs, fouls automated tools:
> e.g. a syzkaller reproducers using an XDP program returning an
> unsupported action will never pass validation.
>
> Replace the WARN_ONCE with a less intrusive pr_warn_once().
>
> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [RFC PATCH 2/2] bpf: let bpf_warn_invalid_xdp_action() report more info
2021-11-15 16:10 ` [RFC PATCH 2/2] bpf: let bpf_warn_invalid_xdp_action() report more info Paolo Abeni
@ 2021-11-15 16:24 ` Toke Høiland-Jørgensen
2021-11-15 17:00 ` Paolo Abeni
0 siblings, 1 reply; 11+ messages in thread
From: Toke Høiland-Jørgensen @ 2021-11-15 16:24 UTC (permalink / raw)
To: Paolo Abeni, netdev; +Cc: Alexei Starovoitov, Daniel Borkmann, bpf
Paolo Abeni <pabeni@redhat.com> writes:
> In non trivial scenarios, the single action id is not sufficient
> to identify the program causing the warning. Let's additionally
> include the program id, the attach type and the relevant device
> name.
>
> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
> ---
> drivers/net/ethernet/amazon/ena/ena_netdev.c | 2 +-
> drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 2 +-
> drivers/net/ethernet/cavium/thunder/nicvf_main.c | 2 +-
> drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 2 +-
> drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 2 +-
> drivers/net/ethernet/freescale/enetc/enetc.c | 2 +-
> drivers/net/ethernet/intel/i40e/i40e_txrx.c | 2 +-
> drivers/net/ethernet/intel/i40e/i40e_xsk.c | 2 +-
> drivers/net/ethernet/intel/ice/ice_txrx.c | 2 +-
> drivers/net/ethernet/intel/ice/ice_xsk.c | 2 +-
> drivers/net/ethernet/intel/igb/igb_main.c | 2 +-
> drivers/net/ethernet/intel/igc/igc_main.c | 2 +-
> drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 +-
> drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c | 2 +-
> drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 2 +-
> drivers/net/ethernet/marvell/mvneta.c | 2 +-
> drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 2 +-
> drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c | 2 +-
> drivers/net/ethernet/mellanox/mlx4/en_rx.c | 2 +-
> drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c | 2 +-
> drivers/net/ethernet/netronome/nfp/nfp_net_common.c | 2 +-
> drivers/net/ethernet/qlogic/qede/qede_fp.c | 2 +-
> drivers/net/ethernet/sfc/rx.c | 2 +-
> drivers/net/ethernet/socionext/netsec.c | 2 +-
> drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
> drivers/net/ethernet/ti/cpsw_priv.c | 2 +-
> drivers/net/hyperv/netvsc_bpf.c | 2 +-
> drivers/net/tun.c | 2 +-
> drivers/net/veth.c | 4 ++--
> drivers/net/virtio_net.c | 4 ++--
> drivers/net/xen-netfront.c | 2 +-
> include/linux/filter.h | 2 +-
> kernel/bpf/cpumap.c | 4 ++--
> kernel/bpf/devmap.c | 4 ++--
> net/core/dev.c | 2 +-
> net/core/filter.c | 6 +++---
> 36 files changed, 42 insertions(+), 42 deletions(-)
>
> diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c
> index 7d5d885d85d5..3b46f1df5609 100644
> --- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
> +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c
> @@ -434,7 +434,7 @@ static int ena_xdp_execute(struct ena_ring *rx_ring, struct xdp_buff *xdp)
> xdp_stat = &rx_ring->rx_stats.xdp_pass;
> break;
> default:
> - bpf_warn_invalid_xdp_action(verdict);
> + bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, verdict);
> xdp_stat = &rx_ring->rx_stats.xdp_invalid;
> }
>
> diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
> index c8083df5e0ab..52fad0fdeacf 100644
> --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
> +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
> @@ -195,7 +195,7 @@ bool bnxt_rx_xdp(struct bnxt *bp, struct bnxt_rx_ring_info *rxr, u16 cons,
> *event |= BNXT_REDIRECT_EVENT;
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(bp->dev, xdp_prog, act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(bp->dev, xdp_prog, act);
> diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
> index bb45d5df2856..30450efccad7 100644
> --- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c
> +++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
> @@ -590,7 +590,7 @@ static inline bool nicvf_xdp_rx(struct nicvf *nic, struct bpf_prog *prog,
> nicvf_xdp_sq_append_pkt(nic, sq, (u64)xdp.data, dma_addr, len);
> return true;
> default:
> - bpf_warn_invalid_xdp_action(action);
> + bpf_warn_invalid_xdp_action(nic->netdev, prog, action);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(nic->netdev, prog, action);
> diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
> index 6b2927d863e2..39fafb7d43b2 100644
> --- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
> +++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
> @@ -2623,7 +2623,7 @@ static u32 dpaa_run_xdp(struct dpaa_priv *priv, struct qm_fd *fd, void *vaddr,
> }
> break;
> default:
> - bpf_warn_invalid_xdp_action(xdp_act);
> + bpf_warn_invalid_xdp_action(priv->net_dev, xdp_prog, xdp_act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(priv->net_dev, xdp_prog, xdp_act);
> diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
> index 714e961e7a77..f113469bd479 100644
> --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
> +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
> @@ -374,7 +374,7 @@ static u32 dpaa2_eth_run_xdp(struct dpaa2_eth_priv *priv,
> dpaa2_eth_xdp_enqueue(priv, ch, fd, vaddr, rx_fq->flowid);
> break;
> default:
> - bpf_warn_invalid_xdp_action(xdp_act);
> + bpf_warn_invalid_xdp_action(priv->net_dev, xdp_prog, xdp_act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(priv->net_dev, xdp_prog, xdp_act);
> diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c
> index 504e12554079..eacb41f86bdb 100644
> --- a/drivers/net/ethernet/freescale/enetc/enetc.c
> +++ b/drivers/net/ethernet/freescale/enetc/enetc.c
> @@ -1547,7 +1547,7 @@ static int enetc_clean_rx_ring_xdp(struct enetc_bdr *rx_ring,
>
> switch (xdp_act) {
> default:
> - bpf_warn_invalid_xdp_action(xdp_act);
> + bpf_warn_invalid_xdp_action(rx_ring->ndev, prog, xdp_act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(rx_ring->ndev, prog, xdp_act);
> diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
> index 10a83e5385c7..b399ca649f09 100644
> --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
> +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
> @@ -2322,7 +2322,7 @@ static int i40e_run_xdp(struct i40e_ring *rx_ring, struct xdp_buff *xdp)
> result = I40E_XDP_REDIR;
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
> fallthrough;
> case XDP_ABORTED:
> out_failure:
> diff --git a/drivers/net/ethernet/intel/i40e/i40e_xsk.c b/drivers/net/ethernet/intel/i40e/i40e_xsk.c
> index ea06e957393e..945b1bb9c6f4 100644
> --- a/drivers/net/ethernet/intel/i40e/i40e_xsk.c
> +++ b/drivers/net/ethernet/intel/i40e/i40e_xsk.c
> @@ -176,7 +176,7 @@ static int i40e_run_xdp_zc(struct i40e_ring *rx_ring, struct xdp_buff *xdp)
> goto out_failure;
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
> fallthrough;
> case XDP_ABORTED:
> out_failure:
> diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c b/drivers/net/ethernet/intel/ice/ice_txrx.c
> index bc3ba19dc88f..56940bb908bc 100644
> --- a/drivers/net/ethernet/intel/ice/ice_txrx.c
> +++ b/drivers/net/ethernet/intel/ice/ice_txrx.c
> @@ -561,7 +561,7 @@ ice_run_xdp(struct ice_rx_ring *rx_ring, struct xdp_buff *xdp,
> goto out_failure;
> return ICE_XDP_REDIR;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
> fallthrough;
> case XDP_ABORTED:
> out_failure:
> diff --git a/drivers/net/ethernet/intel/ice/ice_xsk.c b/drivers/net/ethernet/intel/ice/ice_xsk.c
> index ff55cb415b11..eb68a5824e9a 100644
> --- a/drivers/net/ethernet/intel/ice/ice_xsk.c
> +++ b/drivers/net/ethernet/intel/ice/ice_xsk.c
> @@ -482,7 +482,7 @@ ice_run_xdp_zc(struct ice_rx_ring *rx_ring, struct xdp_buff *xdp,
> goto out_failure;
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
> fallthrough;
> case XDP_ABORTED:
> out_failure:
> diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
> index 836be0d3b291..bdce483d4c0e 100644
> --- a/drivers/net/ethernet/intel/igb/igb_main.c
> +++ b/drivers/net/ethernet/intel/igb/igb_main.c
> @@ -8422,7 +8422,7 @@ static struct sk_buff *igb_run_xdp(struct igb_adapter *adapter,
> result = IGB_XDP_REDIR;
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(adapter->netdev, xdp_prog, act);
> fallthrough;
> case XDP_ABORTED:
> out_failure:
> diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
> index 8e448288ee26..4ea212ddcc9b 100644
> --- a/drivers/net/ethernet/intel/igc/igc_main.c
> +++ b/drivers/net/ethernet/intel/igc/igc_main.c
> @@ -2231,7 +2231,7 @@ static int __igc_xdp_run_prog(struct igc_adapter *adapter,
> return IGC_XDP_REDIRECT;
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(adapter->netdev, prog, act);
> fallthrough;
> case XDP_ABORTED:
> out_failure:
> diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> index 0f9f022260d7..265bc52aacf8 100644
> --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> @@ -2235,7 +2235,7 @@ static struct sk_buff *ixgbe_run_xdp(struct ixgbe_adapter *adapter,
> result = IXGBE_XDP_REDIR;
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
> fallthrough;
> case XDP_ABORTED:
> out_failure:
> diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c
> index db2bc58dfcfd..b3fd8e5cd85b 100644
> --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c
> +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c
> @@ -131,7 +131,7 @@ static int ixgbe_run_xdp_zc(struct ixgbe_adapter *adapter,
> goto out_failure;
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
> fallthrough;
> case XDP_ABORTED:
> out_failure:
> diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
> index d81811ab4ec4..757fe0dace88 100644
> --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
> +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
> @@ -1070,7 +1070,7 @@ static struct sk_buff *ixgbevf_run_xdp(struct ixgbevf_adapter *adapter,
> goto out_failure;
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
> fallthrough;
> case XDP_ABORTED:
> out_failure:
> diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
> index 5a7bdca22a63..c457a765a828 100644
> --- a/drivers/net/ethernet/marvell/mvneta.c
> +++ b/drivers/net/ethernet/marvell/mvneta.c
> @@ -2212,7 +2212,7 @@ mvneta_run_xdp(struct mvneta_port *pp, struct mvneta_rx_queue *rxq,
> mvneta_xdp_put_buff(pp, rxq, xdp, sinfo, sync);
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(pp->dev, prog, act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(pp->dev, prog, act);
> diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> index 2b18d89d9756..e7b7200af5c3 100644
> --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> @@ -3820,7 +3820,7 @@ mvpp2_run_xdp(struct mvpp2_port *port, struct bpf_prog *prog,
> }
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(port->dev, prog, act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(port->dev, prog, act);
> diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
> index 0cc6353254bf..7c4068c5d1ac 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
> @@ -1198,7 +1198,7 @@ static bool otx2_xdp_rcv_pkt_handler(struct otx2_nic *pfvf,
> put_page(page);
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(pfvf->netdev, prog, act);
> break;
> case XDP_ABORTED:
> trace_xdp_exception(pfvf->netdev, prog, act);
> diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
> index 650e6a1844ae..8cfc649f226b 100644
> --- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
> +++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
> @@ -812,7 +812,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
> trace_xdp_exception(dev, xdp_prog, act);
> goto xdp_drop_no_cnt; /* Drop on xmit failure */
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(dev, xdp_prog, act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(dev, xdp_prog, act);
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
> index 2f0df5cc1a2d..338d65e2c9ce 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
> @@ -151,7 +151,7 @@ bool mlx5e_xdp_handle(struct mlx5e_rq *rq, struct mlx5e_dma_info *di,
> rq->stats->xdp_redirect++;
> return true;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(rq->netdev, prog, act);
> fallthrough;
> case XDP_ABORTED:
> xdp_abort:
> diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
> index 850bfdf83d0a..56ef3d64e30d 100644
> --- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
> +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
> @@ -1944,7 +1944,7 @@ static int nfp_net_rx(struct nfp_net_rx_ring *rx_ring, int budget)
> xdp_prog, act);
> continue;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(dp->netdev, xdp_prog, act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(dp->netdev, xdp_prog, act);
> diff --git a/drivers/net/ethernet/qlogic/qede/qede_fp.c b/drivers/net/ethernet/qlogic/qede/qede_fp.c
> index 065e9004598e..32c6e14814bb 100644
> --- a/drivers/net/ethernet/qlogic/qede/qede_fp.c
> +++ b/drivers/net/ethernet/qlogic/qede/qede_fp.c
> @@ -1152,7 +1152,7 @@ static bool qede_rx_xdp(struct qede_dev *edev,
> qede_rx_bd_ring_consume(rxq);
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(edev->ndev, prog, act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(edev->ndev, prog, act);
> diff --git a/drivers/net/ethernet/sfc/rx.c b/drivers/net/ethernet/sfc/rx.c
> index 606750938b89..2375cef577e4 100644
> --- a/drivers/net/ethernet/sfc/rx.c
> +++ b/drivers/net/ethernet/sfc/rx.c
> @@ -338,7 +338,7 @@ static bool efx_do_xdp(struct efx_nic *efx, struct efx_channel *channel,
> break;
>
> default:
> - bpf_warn_invalid_xdp_action(xdp_act);
> + bpf_warn_invalid_xdp_action(efx->net_dev, xdp_prog, xdp_act);
> efx_free_rx_buffers(rx_queue, rx_buf, 1);
> channel->n_rx_xdp_bad_drops++;
> trace_xdp_exception(efx->net_dev, xdp_prog, xdp_act);
> diff --git a/drivers/net/ethernet/socionext/netsec.c b/drivers/net/ethernet/socionext/netsec.c
> index de7d8bf2c226..25dcd8eda5fc 100644
> --- a/drivers/net/ethernet/socionext/netsec.c
> +++ b/drivers/net/ethernet/socionext/netsec.c
> @@ -933,7 +933,7 @@ static u32 netsec_run_xdp(struct netsec_priv *priv, struct bpf_prog *prog,
> }
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(priv->ndev, prog, act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(priv->ndev, prog, act);
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> index d3f350c25b9b..4cb34001c9ac 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> @@ -4690,7 +4690,7 @@ static int __stmmac_xdp_run_prog(struct stmmac_priv *priv,
> res = STMMAC_XDP_REDIRECT;
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(priv->dev, prog, act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(priv->dev, prog, act);
> diff --git a/drivers/net/ethernet/ti/cpsw_priv.c b/drivers/net/ethernet/ti/cpsw_priv.c
> index ecc2a6b7e28f..e9fdf60ba1a8 100644
> --- a/drivers/net/ethernet/ti/cpsw_priv.c
> +++ b/drivers/net/ethernet/ti/cpsw_priv.c
> @@ -1360,7 +1360,7 @@ int cpsw_run_xdp(struct cpsw_priv *priv, int ch, struct xdp_buff *xdp,
> xdp_do_flush_map();
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(ndev, prog, act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(ndev, prog, act);
> diff --git a/drivers/net/hyperv/netvsc_bpf.c b/drivers/net/hyperv/netvsc_bpf.c
> index aa877da113f8..7856905414eb 100644
> --- a/drivers/net/hyperv/netvsc_bpf.c
> +++ b/drivers/net/hyperv/netvsc_bpf.c
> @@ -68,7 +68,7 @@ u32 netvsc_run_xdp(struct net_device *ndev, struct netvsc_channel *nvchan,
> break;
>
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(ndev, prog, act);
> }
>
> out:
> diff --git a/drivers/net/tun.c b/drivers/net/tun.c
> index fecc9a1d293a..0d47d34ba4e7 100644
> --- a/drivers/net/tun.c
> +++ b/drivers/net/tun.c
> @@ -1546,7 +1546,7 @@ static int tun_xdp_act(struct tun_struct *tun, struct bpf_prog *xdp_prog,
> case XDP_PASS:
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(tun->dev, xdp_prog, act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(tun->dev, xdp_prog, act);
> diff --git a/drivers/net/veth.c b/drivers/net/veth.c
> index 50eb43e5bf45..f64dbd8b6403 100644
> --- a/drivers/net/veth.c
> +++ b/drivers/net/veth.c
> @@ -651,7 +651,7 @@ static struct xdp_frame *veth_xdp_rcv_one(struct veth_rq *rq,
> rcu_read_unlock();
> goto xdp_xmit;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(rq->dev, xdp_prog, act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(rq->dev, xdp_prog, act);
> @@ -801,7 +801,7 @@ static struct sk_buff *veth_xdp_rcv_skb(struct veth_rq *rq,
> rcu_read_unlock();
> goto xdp_xmit;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(rq->dev, xdp_prog, act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(rq->dev, xdp_prog, act);
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index 1771d6e5224f..105cd413df52 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -812,7 +812,7 @@ static struct sk_buff *receive_small(struct net_device *dev,
> rcu_read_unlock();
> goto xdp_xmit;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(vi->dev, xdp_prog, act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(vi->dev, xdp_prog, act);
> @@ -1025,7 +1025,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
> rcu_read_unlock();
> goto xdp_xmit;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(vi->dev, xdp_prog, act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(vi->dev, xdp_prog, act);
> diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
> index 911f43986a8c..7b7eb617051a 100644
> --- a/drivers/net/xen-netfront.c
> +++ b/drivers/net/xen-netfront.c
> @@ -930,7 +930,7 @@ static u32 xennet_run_xdp(struct netfront_queue *queue, struct page *pdata,
> break;
>
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(queue->info->netdev, prog, act);
> }
>
> return act;
> diff --git a/include/linux/filter.h b/include/linux/filter.h
> index 24b7ed2677af..c21d14fe0156 100644
> --- a/include/linux/filter.h
> +++ b/include/linux/filter.h
> @@ -1030,7 +1030,7 @@ void xdp_do_flush(void);
> */
> #define xdp_do_flush_map xdp_do_flush
>
> -void bpf_warn_invalid_xdp_action(u32 act);
> +void bpf_warn_invalid_xdp_action(struct net_device *dev, struct bpf_prog *prog, u32 act);
>
> #ifdef CONFIG_INET
> struct sock *bpf_run_sk_reuseport(struct sock_reuseport *reuse, struct sock *sk,
> diff --git a/kernel/bpf/cpumap.c b/kernel/bpf/cpumap.c
> index 585b2b77ccc4..f7359bcb8fa3 100644
> --- a/kernel/bpf/cpumap.c
> +++ b/kernel/bpf/cpumap.c
> @@ -195,7 +195,7 @@ static void cpu_map_bpf_prog_run_skb(struct bpf_cpu_map_entry *rcpu,
> }
> return;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(skb->dev,
> rcpu->prog, act);
I'm not sure if including the device from the map run points is the
right thing to do: the error message refers to "driver unsupported"
actions which is not the case for these instances. So I think it would
make more sense to not include the device for these, and adjust the
error message correspondingly.
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(skb->dev, rcpu->prog, act);
> @@ -254,7 +254,7 @@ static int cpu_map_bpf_prog_run_xdp(struct bpf_cpu_map_entry *rcpu,
> }
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(xdpf->dev_rx, rcpu->prog, act);
> fallthrough;
> case XDP_DROP:
> xdp_return_frame(xdpf);
> diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c
> index f02d04540c0c..79bcf2169881 100644
> --- a/kernel/bpf/devmap.c
> +++ b/kernel/bpf/devmap.c
> @@ -348,7 +348,7 @@ static int dev_map_bpf_prog_run(struct bpf_prog *xdp_prog,
> frames[nframes++] = xdpf;
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(dev, xdp_prog, act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(dev, xdp_prog, act);
> @@ -507,7 +507,7 @@ static u32 dev_map_bpf_prog_run_skb(struct sk_buff *skb, struct bpf_dtab_netdev
> __skb_push(skb, skb->mac_len);
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(dst->dev, dst->xdp_prog, act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(dst->dev, dst->xdp_prog, act);
> diff --git a/net/core/dev.c b/net/core/dev.c
> index 15ac064b5562..cf2691d17dd2 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -4824,7 +4824,7 @@ static u32 netif_receive_generic_xdp(struct sk_buff *skb,
> case XDP_PASS:
> break;
> default:
> - bpf_warn_invalid_xdp_action(act);
> + bpf_warn_invalid_xdp_action(skb->dev, xdp_prog, act);
> fallthrough;
> case XDP_ABORTED:
> trace_xdp_exception(skb->dev, xdp_prog, act);
> diff --git a/net/core/filter.c b/net/core/filter.c
> index 3ba584bb23f8..348e392a337f 100644
> --- a/net/core/filter.c
> +++ b/net/core/filter.c
> @@ -8179,13 +8179,13 @@ static bool xdp_is_valid_access(int off, int size,
> return __is_valid_xdp_access(off, size);
> }
>
> -void bpf_warn_invalid_xdp_action(u32 act)
> +void bpf_warn_invalid_xdp_action(struct net_device *dev, struct bpf_prog *prog, u32 act)
> {
> const u32 act_max = XDP_REDIRECT;
>
> - pr_warn_once("%s XDP return value %u, expect packet loss!\n",
> + pr_warn_once("%s XDP return value %u on prog %d dev %s attach type %d, expect packet loss!\n",
> act > act_max ? "Illegal" : "Driver unsupported",
> - act);
> + act, prog->aux->id, dev->name, prog->expected_attach_type);
This will only ever trigger once per reboot even if the message differs,
right? Which makes it less useful as a debugging aid; so I'm not sure if
it's really worth it with this intrusive change unless we also do
something to add a proper debugging aid (like a tracepoint)...
-Toke
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [RFC PATCH 2/2] bpf: let bpf_warn_invalid_xdp_action() report more info
2021-11-15 16:24 ` Toke Høiland-Jørgensen
@ 2021-11-15 17:00 ` Paolo Abeni
2021-11-15 17:09 ` Toke Høiland-Jørgensen
0 siblings, 1 reply; 11+ messages in thread
From: Paolo Abeni @ 2021-11-15 17:00 UTC (permalink / raw)
To: Toke Høiland-Jørgensen, netdev
Cc: Alexei Starovoitov, Daniel Borkmann, bpf
On Mon, 2021-11-15 at 17:24 +0100, Toke Høiland-Jørgensen wrote:
> Paolo Abeni <pabeni@redhat.com> writes:
>
> > In non trivial scenarios, the single action id is not sufficient
> > to identify the program causing the warning. Let's additionally
> > include the program id, the attach type and the relevant device
> > name.
> >
> > Signed-off-by: Paolo Abeni <pabeni@redhat.com>
> > ---
> > drivers/net/ethernet/amazon/ena/ena_netdev.c | 2 +-
> > drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 2 +-
> > drivers/net/ethernet/cavium/thunder/nicvf_main.c | 2 +-
> > drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 2 +-
> > drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 2 +-
> > drivers/net/ethernet/freescale/enetc/enetc.c | 2 +-
> > drivers/net/ethernet/intel/i40e/i40e_txrx.c | 2 +-
> > drivers/net/ethernet/intel/i40e/i40e_xsk.c | 2 +-
> > drivers/net/ethernet/intel/ice/ice_txrx.c | 2 +-
> > drivers/net/ethernet/intel/ice/ice_xsk.c | 2 +-
> > drivers/net/ethernet/intel/igb/igb_main.c | 2 +-
> > drivers/net/ethernet/intel/igc/igc_main.c | 2 +-
> > drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 +-
> > drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c | 2 +-
> > drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 2 +-
> > drivers/net/ethernet/marvell/mvneta.c | 2 +-
> > drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 2 +-
> > drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c | 2 +-
> > drivers/net/ethernet/mellanox/mlx4/en_rx.c | 2 +-
> > drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c | 2 +-
> > drivers/net/ethernet/netronome/nfp/nfp_net_common.c | 2 +-
> > drivers/net/ethernet/qlogic/qede/qede_fp.c | 2 +-
> > drivers/net/ethernet/sfc/rx.c | 2 +-
> > drivers/net/ethernet/socionext/netsec.c | 2 +-
> > drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
> > drivers/net/ethernet/ti/cpsw_priv.c | 2 +-
> > drivers/net/hyperv/netvsc_bpf.c | 2 +-
> > drivers/net/tun.c | 2 +-
> > drivers/net/veth.c | 4 ++--
> > drivers/net/virtio_net.c | 4 ++--
> > drivers/net/xen-netfront.c | 2 +-
> > include/linux/filter.h | 2 +-
> > kernel/bpf/cpumap.c | 4 ++--
> > kernel/bpf/devmap.c | 4 ++--
> > net/core/dev.c | 2 +-
> > net/core/filter.c | 6 +++---
> > 36 files changed, 42 insertions(+), 42 deletions(-)
> >
> > diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c
> > index 7d5d885d85d5..3b46f1df5609 100644
> > --- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
> > +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c
> > @@ -434,7 +434,7 @@ static int ena_xdp_execute(struct ena_ring *rx_ring, struct xdp_buff *xdp)
> > xdp_stat = &rx_ring->rx_stats.xdp_pass;
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(verdict);
> > + bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, verdict);
> > xdp_stat = &rx_ring->rx_stats.xdp_invalid;
> > }
> >
> > diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
> > index c8083df5e0ab..52fad0fdeacf 100644
> > --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
> > +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
> > @@ -195,7 +195,7 @@ bool bnxt_rx_xdp(struct bnxt *bp, struct bnxt_rx_ring_info *rxr, u16 cons,
> > *event |= BNXT_REDIRECT_EVENT;
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(bp->dev, xdp_prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(bp->dev, xdp_prog, act);
> > diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
> > index bb45d5df2856..30450efccad7 100644
> > --- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c
> > +++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
> > @@ -590,7 +590,7 @@ static inline bool nicvf_xdp_rx(struct nicvf *nic, struct bpf_prog *prog,
> > nicvf_xdp_sq_append_pkt(nic, sq, (u64)xdp.data, dma_addr, len);
> > return true;
> > default:
> > - bpf_warn_invalid_xdp_action(action);
> > + bpf_warn_invalid_xdp_action(nic->netdev, prog, action);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(nic->netdev, prog, action);
> > diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
> > index 6b2927d863e2..39fafb7d43b2 100644
> > --- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
> > +++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
> > @@ -2623,7 +2623,7 @@ static u32 dpaa_run_xdp(struct dpaa_priv *priv, struct qm_fd *fd, void *vaddr,
> > }
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(xdp_act);
> > + bpf_warn_invalid_xdp_action(priv->net_dev, xdp_prog, xdp_act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(priv->net_dev, xdp_prog, xdp_act);
> > diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
> > index 714e961e7a77..f113469bd479 100644
> > --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
> > +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
> > @@ -374,7 +374,7 @@ static u32 dpaa2_eth_run_xdp(struct dpaa2_eth_priv *priv,
> > dpaa2_eth_xdp_enqueue(priv, ch, fd, vaddr, rx_fq->flowid);
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(xdp_act);
> > + bpf_warn_invalid_xdp_action(priv->net_dev, xdp_prog, xdp_act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(priv->net_dev, xdp_prog, xdp_act);
> > diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c
> > index 504e12554079..eacb41f86bdb 100644
> > --- a/drivers/net/ethernet/freescale/enetc/enetc.c
> > +++ b/drivers/net/ethernet/freescale/enetc/enetc.c
> > @@ -1547,7 +1547,7 @@ static int enetc_clean_rx_ring_xdp(struct enetc_bdr *rx_ring,
> >
> > switch (xdp_act) {
> > default:
> > - bpf_warn_invalid_xdp_action(xdp_act);
> > + bpf_warn_invalid_xdp_action(rx_ring->ndev, prog, xdp_act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(rx_ring->ndev, prog, xdp_act);
> > diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
> > index 10a83e5385c7..b399ca649f09 100644
> > --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
> > +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
> > @@ -2322,7 +2322,7 @@ static int i40e_run_xdp(struct i40e_ring *rx_ring, struct xdp_buff *xdp)
> > result = I40E_XDP_REDIR;
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > out_failure:
> > diff --git a/drivers/net/ethernet/intel/i40e/i40e_xsk.c b/drivers/net/ethernet/intel/i40e/i40e_xsk.c
> > index ea06e957393e..945b1bb9c6f4 100644
> > --- a/drivers/net/ethernet/intel/i40e/i40e_xsk.c
> > +++ b/drivers/net/ethernet/intel/i40e/i40e_xsk.c
> > @@ -176,7 +176,7 @@ static int i40e_run_xdp_zc(struct i40e_ring *rx_ring, struct xdp_buff *xdp)
> > goto out_failure;
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > out_failure:
> > diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c b/drivers/net/ethernet/intel/ice/ice_txrx.c
> > index bc3ba19dc88f..56940bb908bc 100644
> > --- a/drivers/net/ethernet/intel/ice/ice_txrx.c
> > +++ b/drivers/net/ethernet/intel/ice/ice_txrx.c
> > @@ -561,7 +561,7 @@ ice_run_xdp(struct ice_rx_ring *rx_ring, struct xdp_buff *xdp,
> > goto out_failure;
> > return ICE_XDP_REDIR;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > out_failure:
> > diff --git a/drivers/net/ethernet/intel/ice/ice_xsk.c b/drivers/net/ethernet/intel/ice/ice_xsk.c
> > index ff55cb415b11..eb68a5824e9a 100644
> > --- a/drivers/net/ethernet/intel/ice/ice_xsk.c
> > +++ b/drivers/net/ethernet/intel/ice/ice_xsk.c
> > @@ -482,7 +482,7 @@ ice_run_xdp_zc(struct ice_rx_ring *rx_ring, struct xdp_buff *xdp,
> > goto out_failure;
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > out_failure:
> > diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
> > index 836be0d3b291..bdce483d4c0e 100644
> > --- a/drivers/net/ethernet/intel/igb/igb_main.c
> > +++ b/drivers/net/ethernet/intel/igb/igb_main.c
> > @@ -8422,7 +8422,7 @@ static struct sk_buff *igb_run_xdp(struct igb_adapter *adapter,
> > result = IGB_XDP_REDIR;
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(adapter->netdev, xdp_prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > out_failure:
> > diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
> > index 8e448288ee26..4ea212ddcc9b 100644
> > --- a/drivers/net/ethernet/intel/igc/igc_main.c
> > +++ b/drivers/net/ethernet/intel/igc/igc_main.c
> > @@ -2231,7 +2231,7 @@ static int __igc_xdp_run_prog(struct igc_adapter *adapter,
> > return IGC_XDP_REDIRECT;
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(adapter->netdev, prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > out_failure:
> > diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> > index 0f9f022260d7..265bc52aacf8 100644
> > --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> > +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> > @@ -2235,7 +2235,7 @@ static struct sk_buff *ixgbe_run_xdp(struct ixgbe_adapter *adapter,
> > result = IXGBE_XDP_REDIR;
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > out_failure:
> > diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c
> > index db2bc58dfcfd..b3fd8e5cd85b 100644
> > --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c
> > +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c
> > @@ -131,7 +131,7 @@ static int ixgbe_run_xdp_zc(struct ixgbe_adapter *adapter,
> > goto out_failure;
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > out_failure:
> > diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
> > index d81811ab4ec4..757fe0dace88 100644
> > --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
> > +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
> > @@ -1070,7 +1070,7 @@ static struct sk_buff *ixgbevf_run_xdp(struct ixgbevf_adapter *adapter,
> > goto out_failure;
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > out_failure:
> > diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
> > index 5a7bdca22a63..c457a765a828 100644
> > --- a/drivers/net/ethernet/marvell/mvneta.c
> > +++ b/drivers/net/ethernet/marvell/mvneta.c
> > @@ -2212,7 +2212,7 @@ mvneta_run_xdp(struct mvneta_port *pp, struct mvneta_rx_queue *rxq,
> > mvneta_xdp_put_buff(pp, rxq, xdp, sinfo, sync);
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(pp->dev, prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(pp->dev, prog, act);
> > diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> > index 2b18d89d9756..e7b7200af5c3 100644
> > --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> > +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
> > @@ -3820,7 +3820,7 @@ mvpp2_run_xdp(struct mvpp2_port *port, struct bpf_prog *prog,
> > }
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(port->dev, prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(port->dev, prog, act);
> > diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
> > index 0cc6353254bf..7c4068c5d1ac 100644
> > --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
> > +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
> > @@ -1198,7 +1198,7 @@ static bool otx2_xdp_rcv_pkt_handler(struct otx2_nic *pfvf,
> > put_page(page);
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(pfvf->netdev, prog, act);
> > break;
> > case XDP_ABORTED:
> > trace_xdp_exception(pfvf->netdev, prog, act);
> > diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
> > index 650e6a1844ae..8cfc649f226b 100644
> > --- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
> > +++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
> > @@ -812,7 +812,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
> > trace_xdp_exception(dev, xdp_prog, act);
> > goto xdp_drop_no_cnt; /* Drop on xmit failure */
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(dev, xdp_prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(dev, xdp_prog, act);
> > diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
> > index 2f0df5cc1a2d..338d65e2c9ce 100644
> > --- a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
> > +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
> > @@ -151,7 +151,7 @@ bool mlx5e_xdp_handle(struct mlx5e_rq *rq, struct mlx5e_dma_info *di,
> > rq->stats->xdp_redirect++;
> > return true;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(rq->netdev, prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > xdp_abort:
> > diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
> > index 850bfdf83d0a..56ef3d64e30d 100644
> > --- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
> > +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
> > @@ -1944,7 +1944,7 @@ static int nfp_net_rx(struct nfp_net_rx_ring *rx_ring, int budget)
> > xdp_prog, act);
> > continue;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(dp->netdev, xdp_prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(dp->netdev, xdp_prog, act);
> > diff --git a/drivers/net/ethernet/qlogic/qede/qede_fp.c b/drivers/net/ethernet/qlogic/qede/qede_fp.c
> > index 065e9004598e..32c6e14814bb 100644
> > --- a/drivers/net/ethernet/qlogic/qede/qede_fp.c
> > +++ b/drivers/net/ethernet/qlogic/qede/qede_fp.c
> > @@ -1152,7 +1152,7 @@ static bool qede_rx_xdp(struct qede_dev *edev,
> > qede_rx_bd_ring_consume(rxq);
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(edev->ndev, prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(edev->ndev, prog, act);
> > diff --git a/drivers/net/ethernet/sfc/rx.c b/drivers/net/ethernet/sfc/rx.c
> > index 606750938b89..2375cef577e4 100644
> > --- a/drivers/net/ethernet/sfc/rx.c
> > +++ b/drivers/net/ethernet/sfc/rx.c
> > @@ -338,7 +338,7 @@ static bool efx_do_xdp(struct efx_nic *efx, struct efx_channel *channel,
> > break;
> >
> > default:
> > - bpf_warn_invalid_xdp_action(xdp_act);
> > + bpf_warn_invalid_xdp_action(efx->net_dev, xdp_prog, xdp_act);
> > efx_free_rx_buffers(rx_queue, rx_buf, 1);
> > channel->n_rx_xdp_bad_drops++;
> > trace_xdp_exception(efx->net_dev, xdp_prog, xdp_act);
> > diff --git a/drivers/net/ethernet/socionext/netsec.c b/drivers/net/ethernet/socionext/netsec.c
> > index de7d8bf2c226..25dcd8eda5fc 100644
> > --- a/drivers/net/ethernet/socionext/netsec.c
> > +++ b/drivers/net/ethernet/socionext/netsec.c
> > @@ -933,7 +933,7 @@ static u32 netsec_run_xdp(struct netsec_priv *priv, struct bpf_prog *prog,
> > }
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(priv->ndev, prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(priv->ndev, prog, act);
> > diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> > index d3f350c25b9b..4cb34001c9ac 100644
> > --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> > +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> > @@ -4690,7 +4690,7 @@ static int __stmmac_xdp_run_prog(struct stmmac_priv *priv,
> > res = STMMAC_XDP_REDIRECT;
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(priv->dev, prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(priv->dev, prog, act);
> > diff --git a/drivers/net/ethernet/ti/cpsw_priv.c b/drivers/net/ethernet/ti/cpsw_priv.c
> > index ecc2a6b7e28f..e9fdf60ba1a8 100644
> > --- a/drivers/net/ethernet/ti/cpsw_priv.c
> > +++ b/drivers/net/ethernet/ti/cpsw_priv.c
> > @@ -1360,7 +1360,7 @@ int cpsw_run_xdp(struct cpsw_priv *priv, int ch, struct xdp_buff *xdp,
> > xdp_do_flush_map();
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(ndev, prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(ndev, prog, act);
> > diff --git a/drivers/net/hyperv/netvsc_bpf.c b/drivers/net/hyperv/netvsc_bpf.c
> > index aa877da113f8..7856905414eb 100644
> > --- a/drivers/net/hyperv/netvsc_bpf.c
> > +++ b/drivers/net/hyperv/netvsc_bpf.c
> > @@ -68,7 +68,7 @@ u32 netvsc_run_xdp(struct net_device *ndev, struct netvsc_channel *nvchan,
> > break;
> >
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(ndev, prog, act);
> > }
> >
> > out:
> > diff --git a/drivers/net/tun.c b/drivers/net/tun.c
> > index fecc9a1d293a..0d47d34ba4e7 100644
> > --- a/drivers/net/tun.c
> > +++ b/drivers/net/tun.c
> > @@ -1546,7 +1546,7 @@ static int tun_xdp_act(struct tun_struct *tun, struct bpf_prog *xdp_prog,
> > case XDP_PASS:
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(tun->dev, xdp_prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(tun->dev, xdp_prog, act);
> > diff --git a/drivers/net/veth.c b/drivers/net/veth.c
> > index 50eb43e5bf45..f64dbd8b6403 100644
> > --- a/drivers/net/veth.c
> > +++ b/drivers/net/veth.c
> > @@ -651,7 +651,7 @@ static struct xdp_frame *veth_xdp_rcv_one(struct veth_rq *rq,
> > rcu_read_unlock();
> > goto xdp_xmit;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(rq->dev, xdp_prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(rq->dev, xdp_prog, act);
> > @@ -801,7 +801,7 @@ static struct sk_buff *veth_xdp_rcv_skb(struct veth_rq *rq,
> > rcu_read_unlock();
> > goto xdp_xmit;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(rq->dev, xdp_prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(rq->dev, xdp_prog, act);
> > diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> > index 1771d6e5224f..105cd413df52 100644
> > --- a/drivers/net/virtio_net.c
> > +++ b/drivers/net/virtio_net.c
> > @@ -812,7 +812,7 @@ static struct sk_buff *receive_small(struct net_device *dev,
> > rcu_read_unlock();
> > goto xdp_xmit;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(vi->dev, xdp_prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(vi->dev, xdp_prog, act);
> > @@ -1025,7 +1025,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
> > rcu_read_unlock();
> > goto xdp_xmit;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(vi->dev, xdp_prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(vi->dev, xdp_prog, act);
> > diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
> > index 911f43986a8c..7b7eb617051a 100644
> > --- a/drivers/net/xen-netfront.c
> > +++ b/drivers/net/xen-netfront.c
> > @@ -930,7 +930,7 @@ static u32 xennet_run_xdp(struct netfront_queue *queue, struct page *pdata,
> > break;
> >
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(queue->info->netdev, prog, act);
> > }
> >
> > return act;
> > diff --git a/include/linux/filter.h b/include/linux/filter.h
> > index 24b7ed2677af..c21d14fe0156 100644
> > --- a/include/linux/filter.h
> > +++ b/include/linux/filter.h
> > @@ -1030,7 +1030,7 @@ void xdp_do_flush(void);
> > */
> > #define xdp_do_flush_map xdp_do_flush
> >
> > -void bpf_warn_invalid_xdp_action(u32 act);
> > +void bpf_warn_invalid_xdp_action(struct net_device *dev, struct bpf_prog *prog, u32 act);
> >
> > #ifdef CONFIG_INET
> > struct sock *bpf_run_sk_reuseport(struct sock_reuseport *reuse, struct sock *sk,
> > diff --git a/kernel/bpf/cpumap.c b/kernel/bpf/cpumap.c
> > index 585b2b77ccc4..f7359bcb8fa3 100644
> > --- a/kernel/bpf/cpumap.c
> > +++ b/kernel/bpf/cpumap.c
> > @@ -195,7 +195,7 @@ static void cpu_map_bpf_prog_run_skb(struct bpf_cpu_map_entry *rcpu,
> > }
> > return;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(skb->dev,
> > rcpu->prog, act);
>
> I'm not sure if including the device from the map run points is the
> right thing to do: the error message refers to "driver unsupported"
> actions which is not the case for these instances. So I think it would
> make more sense to not include the device for these, and adjust the
> error message correspondingly.
>
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(skb->dev, rcpu->prog, act);
> > @@ -254,7 +254,7 @@ static int cpu_map_bpf_prog_run_xdp(struct bpf_cpu_map_entry *rcpu,
> > }
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(xdpf->dev_rx, rcpu->prog, act);
> > fallthrough;
> > case XDP_DROP:
> > xdp_return_frame(xdpf);
> > diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c
> > index f02d04540c0c..79bcf2169881 100644
> > --- a/kernel/bpf/devmap.c
> > +++ b/kernel/bpf/devmap.c
> > @@ -348,7 +348,7 @@ static int dev_map_bpf_prog_run(struct bpf_prog *xdp_prog,
> > frames[nframes++] = xdpf;
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(dev, xdp_prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(dev, xdp_prog, act);
> > @@ -507,7 +507,7 @@ static u32 dev_map_bpf_prog_run_skb(struct sk_buff *skb, struct bpf_dtab_netdev
> > __skb_push(skb, skb->mac_len);
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(dst->dev, dst->xdp_prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(dst->dev, dst->xdp_prog, act);
> > diff --git a/net/core/dev.c b/net/core/dev.c
> > index 15ac064b5562..cf2691d17dd2 100644
> > --- a/net/core/dev.c
> > +++ b/net/core/dev.c
> > @@ -4824,7 +4824,7 @@ static u32 netif_receive_generic_xdp(struct sk_buff *skb,
> > case XDP_PASS:
> > break;
> > default:
> > - bpf_warn_invalid_xdp_action(act);
> > + bpf_warn_invalid_xdp_action(skb->dev, xdp_prog, act);
> > fallthrough;
> > case XDP_ABORTED:
> > trace_xdp_exception(skb->dev, xdp_prog, act);
> > diff --git a/net/core/filter.c b/net/core/filter.c
> > index 3ba584bb23f8..348e392a337f 100644
> > --- a/net/core/filter.c
> > +++ b/net/core/filter.c
> > @@ -8179,13 +8179,13 @@ static bool xdp_is_valid_access(int off, int size,
> > return __is_valid_xdp_access(off, size);
> > }
> >
> > -void bpf_warn_invalid_xdp_action(u32 act)
> > +void bpf_warn_invalid_xdp_action(struct net_device *dev, struct bpf_prog *prog, u32 act)
> > {
> > const u32 act_max = XDP_REDIRECT;
> >
> > - pr_warn_once("%s XDP return value %u, expect packet loss!\n",
> > + pr_warn_once("%s XDP return value %u on prog %d dev %s attach type %d, expect packet loss!\n",
> > act > act_max ? "Illegal" : "Driver unsupported",
> > - act);
> > + act, prog->aux->id, dev->name, prog->expected_attach_type);
>
> This will only ever trigger once per reboot even if the message differs,
> right? Which makes it less useful as a debugging aid; so I'm not sure if
> it's really worth it with this intrusive change unless we also do
> something to add a proper debugging aid (like a tracepoint)...
Yes, the idea would be to add a tracepoint there, if there is general
agreement about this change.
I think this patch is needed because the WARN_ONCE splat gives
implicitly information about the related driver and attach type.
Replacing with a simple printk we lose them.
Cheers,
Paolo
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [RFC PATCH 2/2] bpf: let bpf_warn_invalid_xdp_action() report more info
2021-11-15 17:00 ` Paolo Abeni
@ 2021-11-15 17:09 ` Toke Høiland-Jørgensen
2021-11-18 0:48 ` Alexei Starovoitov
0 siblings, 1 reply; 11+ messages in thread
From: Toke Høiland-Jørgensen @ 2021-11-15 17:09 UTC (permalink / raw)
To: Paolo Abeni, netdev; +Cc: Alexei Starovoitov, Daniel Borkmann, bpf
Paolo Abeni <pabeni@redhat.com> writes:
>> > - pr_warn_once("%s XDP return value %u, expect packet loss!\n",
>> > + pr_warn_once("%s XDP return value %u on prog %d dev %s attach type %d, expect packet loss!\n",
>> > act > act_max ? "Illegal" : "Driver unsupported",
>> > - act);
>> > + act, prog->aux->id, dev->name, prog->expected_attach_type);
>>
>> This will only ever trigger once per reboot even if the message differs,
>> right? Which makes it less useful as a debugging aid; so I'm not sure if
>> it's really worth it with this intrusive change unless we also do
>> something to add a proper debugging aid (like a tracepoint)...
>
> Yes, the idea would be to add a tracepoint there, if there is general
> agreement about this change.
>
> I think this patch is needed because the WARN_ONCE splat gives
> implicitly information about the related driver and attach type.
> Replacing with a simple printk we lose them.
Ah, right, good point. Pointing that out in the commit message might be
a good idea; otherwise people may miss that ;)
-Toke
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [RFC PATCH 2/2] bpf: let bpf_warn_invalid_xdp_action() report more info
2021-11-15 17:09 ` Toke Høiland-Jørgensen
@ 2021-11-18 0:48 ` Alexei Starovoitov
2021-11-18 11:11 ` Paolo Abeni
0 siblings, 1 reply; 11+ messages in thread
From: Alexei Starovoitov @ 2021-11-18 0:48 UTC (permalink / raw)
To: Toke Høiland-Jørgensen
Cc: Paolo Abeni, netdev, Alexei Starovoitov, Daniel Borkmann, bpf
On Mon, Nov 15, 2021 at 06:09:28PM +0100, Toke Høiland-Jørgensen wrote:
> Paolo Abeni <pabeni@redhat.com> writes:
>
> >> > - pr_warn_once("%s XDP return value %u, expect packet loss!\n",
> >> > + pr_warn_once("%s XDP return value %u on prog %d dev %s attach type %d, expect packet loss!\n",
> >> > act > act_max ? "Illegal" : "Driver unsupported",
> >> > - act);
> >> > + act, prog->aux->id, dev->name, prog->expected_attach_type);
> >>
> >> This will only ever trigger once per reboot even if the message differs,
> >> right? Which makes it less useful as a debugging aid; so I'm not sure if
> >> it's really worth it with this intrusive change unless we also do
> >> something to add a proper debugging aid (like a tracepoint)...
> >
> > Yes, the idea would be to add a tracepoint there, if there is general
> > agreement about this change.
> >
> > I think this patch is needed because the WARN_ONCE splat gives
> > implicitly information about the related driver and attach type.
> > Replacing with a simple printk we lose them.
>
> Ah, right, good point. Pointing that out in the commit message might be
> a good idea; otherwise people may miss that ;)
Though it's quite a churn across the drivers I think extra verbosity here is justified.
I'd only suggest to print stable things. Like prog->aux->id probably has
little value for the person looking at the logs. That prog id is likely gone.
If it was prog->aux->name it would be more helpful.
Same with expected_attach_type. Why print it at all?
tracepoint is probably good idea too.
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [RFC PATCH 2/2] bpf: let bpf_warn_invalid_xdp_action() report more info
2021-11-18 0:48 ` Alexei Starovoitov
@ 2021-11-18 11:11 ` Paolo Abeni
2021-11-18 11:50 ` Toke Høiland-Jørgensen
0 siblings, 1 reply; 11+ messages in thread
From: Paolo Abeni @ 2021-11-18 11:11 UTC (permalink / raw)
To: Alexei Starovoitov, Toke Høiland-Jørgensen
Cc: netdev, Alexei Starovoitov, Daniel Borkmann, bpf
Hello,
On Wed, 2021-11-17 at 16:48 -0800, Alexei Starovoitov wrote:
> On Mon, Nov 15, 2021 at 06:09:28PM +0100, Toke Høiland-Jørgensen wrote:
> > Paolo Abeni <pabeni@redhat.com> writes:
> >
> > > > > - pr_warn_once("%s XDP return value %u, expect packet loss!\n",
> > > > > + pr_warn_once("%s XDP return value %u on prog %d dev %s attach type %d, expect packet loss!\n",
> > > > > act > act_max ? "Illegal" : "Driver unsupported",
> > > > > - act);
> > > > > + act, prog->aux->id, dev->name, prog->expected_attach_type);
> > > >
> > > > This will only ever trigger once per reboot even if the message differs,
> > > > right? Which makes it less useful as a debugging aid; so I'm not sure if
> > > > it's really worth it with this intrusive change unless we also do
> > > > something to add a proper debugging aid (like a tracepoint)...
> > >
> > > Yes, the idea would be to add a tracepoint there, if there is general
> > > agreement about this change.
> > >
> > > I think this patch is needed because the WARN_ONCE splat gives
> > > implicitly information about the related driver and attach type.
> > > Replacing with a simple printk we lose them.
> >
> > Ah, right, good point. Pointing that out in the commit message might be
> > a good idea; otherwise people may miss that ;)
>
> Though it's quite a churn across the drivers I think extra verbosity here is justified.
> I'd only suggest to print stable things. Like prog->aux->id probably has
> little value for the person looking at the logs. That prog id is likely gone.
> If it was prog->aux->name it would be more helpful.
> Same with expected_attach_type. Why print it at all?
> tracepoint is probably good idea too.
Thanks for the feedback.
I tried to select the additional arguments to allow the user/admin
tracking down which program is causing the issue and why. I'm a
complete newbe wrt XDP, so likely my choice were naive.
I thought the id identifies the program in an unambiguous manner. I
understand the program could be unloaded meanwhile, but if that is not
the case the id should be quite useful. Perhaps we could dump both the
id and the name?
I included the attach type as different types support/allow different
actions: the same program could cause the warning or not depending on
it. If that is not useful I can drop the attach type from the next
iteration.
Thanks!
Paolo
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [RFC PATCH 2/2] bpf: let bpf_warn_invalid_xdp_action() report more info
2021-11-18 11:11 ` Paolo Abeni
@ 2021-11-18 11:50 ` Toke Høiland-Jørgensen
2021-11-18 21:52 ` Alexei Starovoitov
0 siblings, 1 reply; 11+ messages in thread
From: Toke Høiland-Jørgensen @ 2021-11-18 11:50 UTC (permalink / raw)
To: Paolo Abeni, Alexei Starovoitov
Cc: netdev, Alexei Starovoitov, Daniel Borkmann, bpf
Paolo Abeni <pabeni@redhat.com> writes:
> Hello,
>
> On Wed, 2021-11-17 at 16:48 -0800, Alexei Starovoitov wrote:
>> On Mon, Nov 15, 2021 at 06:09:28PM +0100, Toke Høiland-Jørgensen wrote:
>> > Paolo Abeni <pabeni@redhat.com> writes:
>> >
>> > > > > - pr_warn_once("%s XDP return value %u, expect packet loss!\n",
>> > > > > + pr_warn_once("%s XDP return value %u on prog %d dev %s attach type %d, expect packet loss!\n",
>> > > > > act > act_max ? "Illegal" : "Driver unsupported",
>> > > > > - act);
>> > > > > + act, prog->aux->id, dev->name, prog->expected_attach_type);
>> > > >
>> > > > This will only ever trigger once per reboot even if the message differs,
>> > > > right? Which makes it less useful as a debugging aid; so I'm not sure if
>> > > > it's really worth it with this intrusive change unless we also do
>> > > > something to add a proper debugging aid (like a tracepoint)...
>> > >
>> > > Yes, the idea would be to add a tracepoint there, if there is general
>> > > agreement about this change.
>> > >
>> > > I think this patch is needed because the WARN_ONCE splat gives
>> > > implicitly information about the related driver and attach type.
>> > > Replacing with a simple printk we lose them.
>> >
>> > Ah, right, good point. Pointing that out in the commit message might be
>> > a good idea; otherwise people may miss that ;)
>>
>> Though it's quite a churn across the drivers I think extra verbosity here is justified.
>> I'd only suggest to print stable things. Like prog->aux->id probably has
>> little value for the person looking at the logs. That prog id is likely gone.
>> If it was prog->aux->name it would be more helpful.
>> Same with expected_attach_type. Why print it at all?
>> tracepoint is probably good idea too.
>
> Thanks for the feedback.
>
> I tried to select the additional arguments to allow the user/admin
> tracking down which program is causing the issue and why. I'm a
> complete newbe wrt XDP, so likely my choice were naive.
>
> I thought the id identifies the program in an unambiguous manner. I
> understand the program could be unloaded meanwhile, but if that is not
> the case the id should be quite useful. Perhaps we could dump both the
> id and the name?
>
> I included the attach type as different types support/allow different
> actions: the same program could cause the warning or not depending on
> it. If that is not useful I can drop the attach type from the next
> iteration.
The attach type identifies DEVMAP and CPUMAP programs, but just printing
it as a number probably doesn't make sense. So maybe something like:
switch(prog->expected_attach_type) {
case BPF_XDP_DEVMAP:
case BPF_XDP_CPUMAP:
pr_warn_once("Illegal XDP return value %u from prog %s(%d) in %s!\n",
act, prog->aux_name, prog->aux->id,
prog->expected_attach_type == BPF_XDP_DEVMAP ? "devmap" : "cpumap");
break;
default:
pr_warn_once("%s XDP return value %u on prog %s(%d) dev %s, expect packet loss!\n",
act > act_max ? "Illegal" : "Driver unsupported",
act, prog->aux->name, prog->aux->id, dev->name);
break;
}
-Toke
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [RFC PATCH 2/2] bpf: let bpf_warn_invalid_xdp_action() report more info
2021-11-18 11:50 ` Toke Høiland-Jørgensen
@ 2021-11-18 21:52 ` Alexei Starovoitov
0 siblings, 0 replies; 11+ messages in thread
From: Alexei Starovoitov @ 2021-11-18 21:52 UTC (permalink / raw)
To: Toke Høiland-Jørgensen
Cc: Paolo Abeni, netdev, Alexei Starovoitov, Daniel Borkmann, bpf
On Thu, Nov 18, 2021 at 12:50:58PM +0100, Toke Høiland-Jørgensen wrote:
> Paolo Abeni <pabeni@redhat.com> writes:
>
> > Hello,
> >
> > On Wed, 2021-11-17 at 16:48 -0800, Alexei Starovoitov wrote:
> >> On Mon, Nov 15, 2021 at 06:09:28PM +0100, Toke Høiland-Jørgensen wrote:
> >> > Paolo Abeni <pabeni@redhat.com> writes:
> >> >
> >> > > > > - pr_warn_once("%s XDP return value %u, expect packet loss!\n",
> >> > > > > + pr_warn_once("%s XDP return value %u on prog %d dev %s attach type %d, expect packet loss!\n",
> >> > > > > act > act_max ? "Illegal" : "Driver unsupported",
> >> > > > > - act);
> >> > > > > + act, prog->aux->id, dev->name, prog->expected_attach_type);
> >> > > >
> >> > > > This will only ever trigger once per reboot even if the message differs,
> >> > > > right? Which makes it less useful as a debugging aid; so I'm not sure if
> >> > > > it's really worth it with this intrusive change unless we also do
> >> > > > something to add a proper debugging aid (like a tracepoint)...
> >> > >
> >> > > Yes, the idea would be to add a tracepoint there, if there is general
> >> > > agreement about this change.
> >> > >
> >> > > I think this patch is needed because the WARN_ONCE splat gives
> >> > > implicitly information about the related driver and attach type.
> >> > > Replacing with a simple printk we lose them.
> >> >
> >> > Ah, right, good point. Pointing that out in the commit message might be
> >> > a good idea; otherwise people may miss that ;)
> >>
> >> Though it's quite a churn across the drivers I think extra verbosity here is justified.
> >> I'd only suggest to print stable things. Like prog->aux->id probably has
> >> little value for the person looking at the logs. That prog id is likely gone.
> >> If it was prog->aux->name it would be more helpful.
> >> Same with expected_attach_type. Why print it at all?
> >> tracepoint is probably good idea too.
> >
> > Thanks for the feedback.
> >
> > I tried to select the additional arguments to allow the user/admin
> > tracking down which program is causing the issue and why. I'm a
> > complete newbe wrt XDP, so likely my choice were naive.
> >
> > I thought the id identifies the program in an unambiguous manner. I
> > understand the program could be unloaded meanwhile, but if that is not
> > the case the id should be quite useful. Perhaps we could dump both the
> > id and the name?
> >
> > I included the attach type as different types support/allow different
> > actions: the same program could cause the warning or not depending on
> > it. If that is not useful I can drop the attach type from the next
> > iteration.
>
> The attach type identifies DEVMAP and CPUMAP programs, but just printing
> it as a number probably doesn't make sense. So maybe something like:
>
> switch(prog->expected_attach_type) {
> case BPF_XDP_DEVMAP:
> case BPF_XDP_CPUMAP:
> pr_warn_once("Illegal XDP return value %u from prog %s(%d) in %s!\n",
> act, prog->aux_name, prog->aux->id,
> prog->expected_attach_type == BPF_XDP_DEVMAP ? "devmap" : "cpumap");
> break;
> default:
> pr_warn_once("%s XDP return value %u on prog %s(%d) dev %s, expect packet loss!\n",
> act > act_max ? "Illegal" : "Driver unsupported",
> act, prog->aux->name, prog->aux->id, dev->name);
> break;
imo it's an overkill for a debug message that should not be seen.
Just attach bpf probe to this function and print whatever necessary.
Keep kernel message single line and short that is easily greppable.
^ permalink raw reply [flat|nested] 11+ messages in thread
end of thread, other threads:[~2021-11-18 21:52 UTC | newest]
Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed)
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2021-11-15 16:10 [RFC PATCH 0/2] bpf: do not WARN in bpf_warn_invalid_xdp_action() Paolo Abeni
2021-11-15 16:10 ` [RFC PATCH 1/2] " Paolo Abeni
2021-11-15 16:20 ` Toke Høiland-Jørgensen
2021-11-15 16:10 ` [RFC PATCH 2/2] bpf: let bpf_warn_invalid_xdp_action() report more info Paolo Abeni
2021-11-15 16:24 ` Toke Høiland-Jørgensen
2021-11-15 17:00 ` Paolo Abeni
2021-11-15 17:09 ` Toke Høiland-Jørgensen
2021-11-18 0:48 ` Alexei Starovoitov
2021-11-18 11:11 ` Paolo Abeni
2021-11-18 11:50 ` Toke Høiland-Jørgensen
2021-11-18 21:52 ` Alexei Starovoitov
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