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Commit 8c5bb1fa authored by Johannes Berg's avatar Johannes Berg
Browse files

mac80211: remove BUG_ON usage 



These BUG_ON statements should never trigger, but in the unlikely
event that somebody does manage don't stop everything but simply
exit the code path with an error.

Leave the one BUG_ON where changing it would result in a NULL
pointer dereference.

Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 2fd05115

net/mac80211/key.c

+4 −3
Original line number Diff line number Diff line
@@ -325,7 +325,8 @@ ieee80211_key_alloc(u32 cipher, int idx, size_t key_len, 
	struct ieee80211_key *key;

	int i, j, err;



	BUG_ON(idx < 0 || idx >= NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS);

	if (WARN_ON(idx < 0 || idx >= NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS))

		return ERR_PTR(-EINVAL);



	key = kzalloc(sizeof(struct ieee80211_key) + key_len, GFP_KERNEL);

	if (!key)
@@ -481,8 +482,8 @@ int ieee80211_key_link(struct ieee80211_key *key, 
	int idx, ret;

	bool pairwise;



	BUG_ON(!sdata);

	BUG_ON(!key);

	if (WARN_ON(!sdata || !key))

		return -EINVAL;



	pairwise = key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE;

	idx = key->conf.keyidx;

net/mac80211/mesh_pathtbl.c

+4 −2
Original line number Diff line number Diff line
@@ -287,8 +287,10 @@ static void mesh_path_move_to_queue(struct mesh_path *gate_mpath, 
	struct sk_buff_head failq;

	unsigned long flags;



	BUG_ON(gate_mpath == from_mpath);

	BUG_ON(!gate_mpath->next_hop);

	if (WARN_ON(gate_mpath == from_mpath))

		return;

	if (WARN_ON(!gate_mpath->next_hop))

		return;



	__skb_queue_head_init(&failq);

net/mac80211/mesh_sync.c

+1 −1
Original line number Diff line number Diff line
@@ -171,7 +171,7 @@ static void mesh_sync_offset_adjust_tbtt(struct ieee80211_sub_if_data *sdata, 
	u8 cap;



	WARN_ON(ifmsh->mesh_sp_id != IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET);

	BUG_ON(!rcu_read_lock_held());

	WARN_ON(!rcu_read_lock_held());

	cap = beacon->meshconf->meshconf_cap;



	spin_lock_bh(&ifmsh->sync_offset_lock);