[PATCH 5.14 120/172] ionic: fix gathering of debug stats

Greg Kroah-Hartman
2021-10-04T13:37:30Z

From: Shannon Nelson <snelson@pensando.io>

[ Upstream commit c23bb54f28d61a48008428e8cd320c947993919b ]

Don't print stats for which we haven't reserved space as it can
cause nasty memory bashing and related bad behaviors.

Fixes: aa620993b1e5 ("ionic: pull per-q stats work out of queue loops")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/pensando/ionic/ionic_stats.c | 9 ---------
1 file changed, 9 deletions(-)

diff --git a/drivers/net/ethernet/pensando/ionic/ionic_stats.c b/drivers/net/ethernet/pensando/ionic/ionic_stats.c
index 58a854666c62..c14de5fcedea 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_stats.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_stats.c
@@ -380,15 +380,6 @@ static void ionic_sw_stats_get_txq_values(struct ionic_lif *lif, u64 **buf,
&ionic_dbg_intr_stats_desc[i]);
(*buf)++;
}
- for (i = 0; i < IONIC_NUM_DBG_NAPI_STATS; i++) {
- **buf = IONIC_READ_STAT64(&txqcq->napi_stats,
- &ionic_dbg_napi_stats_desc[i]);
- (*buf)++;
- }
- for (i = 0; i < IONIC_MAX_NUM_NAPI_CNTR; i++) {
- **buf = txqcq->napi_stats.work_done_cntr[i];
- (*buf)++;
- }
for (i = 0; i < IONIC_MAX_NUM_SG_CNTR; i++) {
**buf = txstats->sg_cntr[i];
(*buf)++;
--
2.33.0