Smatch spot a possible NULL pointer dereference. Fix it.
__iwl_mvm_mac_set_key can be called with sta = NULL
Also add a NULL pointer check after memory allocation.
Reported-by: Dan Carpenter <[email protected]>
Signed-off-by: Emmanuel Grumbach <[email protected]>
---
drivers/net/wireless/intel/iwlwifi/mei/main.c | 2 ++
drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c | 11 ++++++-----
2 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/mei/main.c b/drivers/net/wireless/intel/iwlwifi/mei/main.c
index 112cc362e8e7..7fa42fd2ba16 100644
--- a/drivers/net/wireless/intel/iwlwifi/mei/main.c
+++ b/drivers/net/wireless/intel/iwlwifi/mei/main.c
@@ -627,6 +627,8 @@ static void iwl_mei_handle_csme_filters(struct mei_cl_device *cldev,
lockdep_is_held(&iwl_mei_mutex));
new_filters = kzalloc(sizeof(*new_filters), GFP_KERNEL);
+ if (!new_filters)
+ return;
/* Copy the OOB filters */
new_filters->filters = filters->filters;
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index c96a0ece8066..6356752a8a3c 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -3557,13 +3557,14 @@ static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct iwl_mvm_sta *mvmsta;
+ struct iwl_mvm_sta *mvmsta = NULL;
struct iwl_mvm_key_pn *ptk_pn;
int keyidx = key->keyidx;
int ret, i;
u8 key_offset;
- mvmsta = iwl_mvm_sta_from_mac80211(sta);
+ if (sta)
+ mvmsta = iwl_mvm_sta_from_mac80211(sta);
switch (key->cipher) {
case WLAN_CIPHER_SUITE_TKIP:
@@ -3665,7 +3666,7 @@ static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
}
if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
- sta && iwl_mvm_has_new_rx_api(mvm) &&
+ mvmsta && iwl_mvm_has_new_rx_api(mvm) &&
key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
(key->cipher == WLAN_CIPHER_SUITE_CCMP ||
key->cipher == WLAN_CIPHER_SUITE_GCMP ||
@@ -3699,7 +3700,7 @@ static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
else
key_offset = STA_KEY_IDX_INVALID;
- if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
+ if (mvmsta && key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
mvmsta->pairwise_cipher = key->cipher;
IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
@@ -3742,7 +3743,7 @@ static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
break;
}
- if (sta && iwl_mvm_has_new_rx_api(mvm) &&
+ if (mvmsta && iwl_mvm_has_new_rx_api(mvm) &&
key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
(key->cipher == WLAN_CIPHER_SUITE_CCMP ||
key->cipher == WLAN_CIPHER_SUITE_GCMP ||
--
2.25.1