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iwlwifi: mvm: Fix possible NULL pointer dereference

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iwl_mvm_te_clear_data() is called for cleanup in case sending
the HOT_SPOT_CMD failed. However, in case sending the command
caused a fw error and restart (e.g. if the command is not supported)
then the te_data pointer may no longer be valid, which leads to
a NULL pointer dereference.

Fix it by checking that the te_data pointer is not NULL before
dereferencing it.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Avraham Stern 2018-12-24 10:59:13 +02:00 • committed by Luca Coelho
commit cee859fe9a
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/intel/iwlwifi/mvm/time-event.c
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@ -85,7 +85,7 @@ void iwl_mvm_te_clear_data(struct iwl_mvm *mvm,
{
lockdep_assert_held(&mvm->time_event_lock);
if (!te_data->vif)
if (!te_data || !te_data->vif)
return;
list_del(&te_data->list);