From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Johannes Berg <johannes.berg@intel.com>,
Luca Coelho <luciano.coelho@intel.com>,
Sasha Levin <sashal@kernel.org>,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.2 065/123] iwlwifi: fix locking in delayed GTK setting
Date: Tue, 13 Aug 2019 22:09:49 -0400 [thread overview]
Message-ID: <20190814021047.14828-65-sashal@kernel.org> (raw)
In-Reply-To: <20190814021047.14828-1-sashal@kernel.org>
From: Johannes Berg <johannes.berg@intel.com>
[ Upstream commit 6569e7d36773956298ec1d5f4e6a2487913d2752 ]
This code clearly never could have worked, since it locks
while already locked. Add an unlocked __iwl_mvm_mac_set_key()
variant that doesn't do locking to fix that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../net/wireless/intel/iwlwifi/mvm/mac80211.c | 39 ++++++++++++-------
1 file changed, 26 insertions(+), 13 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index 964c7baabede3..edffae3741e00 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -207,11 +207,11 @@ static const struct cfg80211_pmsr_capabilities iwl_mvm_pmsr_capa = {
},
};
-static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
- enum set_key_cmd cmd,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta,
- struct ieee80211_key_conf *key);
+static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
+ enum set_key_cmd cmd,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *key);
void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
{
@@ -2725,7 +2725,7 @@ static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
mvmvif->ap_early_keys[i] = NULL;
- ret = iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key);
+ ret = __iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key);
if (ret)
goto out_quota_failed;
}
@@ -3493,11 +3493,11 @@ static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
return ret;
}
-static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
- enum set_key_cmd cmd,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta,
- struct ieee80211_key_conf *key)
+static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
+ enum set_key_cmd cmd,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *key)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
@@ -3552,8 +3552,6 @@ static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
return -EOPNOTSUPP;
}
- mutex_lock(&mvm->mutex);
-
switch (cmd) {
case SET_KEY:
if ((vif->type == NL80211_IFTYPE_ADHOC ||
@@ -3699,7 +3697,22 @@ static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
ret = -EINVAL;
}
+ return ret;
+}
+
+static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
+ enum set_key_cmd cmd,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *key)
+{
+ struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
+ int ret;
+
+ mutex_lock(&mvm->mutex);
+ ret = __iwl_mvm_mac_set_key(hw, cmd, vif, sta, key);
mutex_unlock(&mvm->mutex);
+
return ret;
}
--
2.20.1
next prev parent reply other threads:[~2019-08-14 2:13 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190814021047.14828-1-sashal@kernel.org>
2019-08-14 2:09 ` [PATCH AUTOSEL 5.2 045/123] {nl,mac}80211: fix interface combinations on crypto controlled devices Sasha Levin
2019-08-14 2:09 ` [PATCH AUTOSEL 5.2 053/123] mac80211_hwsim: Fix possible null-pointer dereferences in hwsim_dump_radio_nl() Sasha Levin
2019-08-14 2:09 ` [PATCH AUTOSEL 5.2 062/123] iwlwifi: mvm: avoid races in rate init and rate perform Sasha Levin
2019-08-14 2:09 ` [PATCH AUTOSEL 5.2 063/123] iwlwifi: dbg_ini: move iwl_dbg_tlv_load_bin out of debug override ifdef Sasha Levin
2019-08-14 2:09 ` [PATCH AUTOSEL 5.2 064/123] iwlwifi: dbg_ini: move iwl_dbg_tlv_free outside of debugfs ifdef Sasha Levin
2019-08-14 2:09 ` Sasha Levin [this message]
2019-08-14 2:09 ` [PATCH AUTOSEL 5.2 066/123] iwlwifi: mvm: send LQ command always ASYNC Sasha Levin
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