* [PATCH] cfg80211: scan: drop entry from hidden_list on overflow
@ 2021-04-16 7:42 Johannes Berg
0 siblings, 0 replies; only message in thread
From: Johannes Berg @ 2021-04-16 7:42 UTC (permalink / raw)
To: linux-wireless; +Cc: Johannes Berg, Dan Carpenter
From: Johannes Berg <johannes.berg@intel.com>
If we overflow the maximum number of BSS entries and free the
new entry, drop it from any hidden_list that it may have been
added to in the code above or in cfg80211_combine_bsses().
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
net/wireless/scan.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 758eb7d2a706..caa8eafbd583 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -1751,6 +1751,8 @@ cfg80211_bss_update(struct cfg80211_registered_device *rdev,
if (rdev->bss_entries >= bss_entries_limit &&
!cfg80211_bss_expire_oldest(rdev)) {
+ if (!list_empty(&new->hidden_list))
+ list_del(&new->hidden_list);
kfree(new);
goto drop;
}
--
2.30.2
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2021-04-16 7:42 [PATCH] cfg80211: scan: drop entry from hidden_list on overflow Johannes Berg
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