diff options
| author | Yinjun Zhang <yinjun.zhang@corigine.com> | 2021-10-29 13:29:02 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-10-29 13:25:32 +0100 |
| commit | f8d384a640dd32aaf0a05fec137ccbf0e986b09f (patch) | |
| tree | 844b589d6e182d4c8774c0c3c6ac3b3a23b20dc4 /drivers/net | |
| parent | e300a85db1f16a5805033feb56ec1861f02c7b1c (diff) | |
| download | linux-f8d384a640dd32aaf0a05fec137ccbf0e986b09f.tar.bz2 | |
nfp: fix NULL pointer access when scheduling dim work
Each rx/tx ring has a related dim work, when rx/tx ring number is
decreased by `ethtool -L`, the corresponding rx_ring or tx_ring is
assigned NULL, while its related work is not destroyed. When scheduled,
the work will access NULL pointer.
Fixes: 9d32e4e7e9e1 ("nfp: add support for coalesce adaptive feature")
Signed-off-by: Yinjun Zhang <yinjun.zhang@corigine.com>
Signed-off-by: Louis Peens <louis.peens@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/nfp_net_common.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c index 5bfa22accf2c..f8b880c8e514 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c @@ -2067,7 +2067,7 @@ static int nfp_net_poll(struct napi_struct *napi, int budget) if (napi_complete_done(napi, pkts_polled)) nfp_net_irq_unmask(r_vec->nfp_net, r_vec->irq_entry); - if (r_vec->nfp_net->rx_coalesce_adapt_on) { + if (r_vec->nfp_net->rx_coalesce_adapt_on && r_vec->rx_ring) { struct dim_sample dim_sample = {}; unsigned int start; u64 pkts, bytes; @@ -2082,7 +2082,7 @@ static int nfp_net_poll(struct napi_struct *napi, int budget) net_dim(&r_vec->rx_dim, dim_sample); } - if (r_vec->nfp_net->tx_coalesce_adapt_on) { + if (r_vec->nfp_net->tx_coalesce_adapt_on && r_vec->tx_ring) { struct dim_sample dim_sample = {}; unsigned int start; u64 pkts, bytes; |