From: Ben Greear <greearb@xxxxxxxxxxxxxxx>
After that, print it out with net_ratelimit. We saw a system
continually hit this warning, for reasons unknown, and it
seems it bogged the system down enough to make it go OOM.
Signed-off-by: Ben Greear <greearb@xxxxxxxxxxxxxxx>
---
:100644 100644 e03a8e9... 2eab7d8... M net/mac80211/tx.c
net/mac80211/tx.c | 26 +++++++++++++++++++-------
1 files changed, 19 insertions(+), 7 deletions(-)
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index e03a8e9..2eab7d8 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -672,14 +672,26 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
* Lets not bother rate control if we're associated and cannot
* talk to the sta. This should not happen.
*/
- if (WARN(test_bit(SCAN_SW_SCANNING, &tx->local->scanning) && assoc &&
- !rate_usable_index_exists(sband, &tx->sta->sta),
- "%s: Dropped data frame as no usable bitrate found while "
- "scanning and associated. Target station: "
- "%pM on %d GHz band\n",
- tx->sdata->name, hdr->addr1,
- info->band ? 5 : 2))
+ if (test_bit(SCAN_SW_SCANNING, &tx->local->scanning) && assoc &&
+ !rate_usable_index_exists(sband, &tx->sta->sta)) {
+ static bool do_once = true;
+ if (do_once) {
+ WARN(1, "%s: Dropped data frame as no usable bitrate found while "
+ "scanning and associated. Target station: "
+ "%pM on %d GHz band\n",
+ tx->sdata->name, hdr->addr1,
+ info->band ? 5 : 2);
+ do_once = false;
+ }
+ else {
+ net_info_ratelimited("%s: Dropped data frame as no usable bitrate found while "
+ "scanning and associated. Target station: "
+ "%pM on %d GHz band\n",
+ tx->sdata->name, hdr->addr1,
+ info->band ? 5 : 2);
+ }
return TX_DROP;
+ }
/*
* If we're associated with the sta at this point we know we can at
--
1.7.3.4
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