From: Johannes Berg johannes.berg@intel.com
stable inclusion from stable-v6.6.2 commit 2c1d8b046866b653d55bd50e088335ee34760122 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8IW7G
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 5ea82df1f50e42416d0a8a7c42d37cc1df1545fe ]
In mesh_fast_tx_flush_addr() we already hold the lock, so don't need additional hashtable RCU protection. Use the rhashtable_lookup_fast() variant to avoid RCU protection warnings.
Fixes: d5edb9ae8d56 ("wifi: mac80211: mesh fast xmit support") Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- net/mac80211/mesh_pathtbl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c index d32e304eeb4b..3e52aaa57b1f 100644 --- a/net/mac80211/mesh_pathtbl.c +++ b/net/mac80211/mesh_pathtbl.c @@ -648,7 +648,7 @@ void mesh_fast_tx_flush_addr(struct ieee80211_sub_if_data *sdata,
cache = &sdata->u.mesh.tx_cache; spin_lock_bh(&cache->walk_lock); - entry = rhashtable_lookup(&cache->rht, addr, fast_tx_rht_params); + entry = rhashtable_lookup_fast(&cache->rht, addr, fast_tx_rht_params); if (entry) mesh_fast_tx_entry_free(cache, entry); spin_unlock_bh(&cache->walk_lock);