From: Johannes Berg <johannes.berg@xxxxxxxxx> 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: Johannes Berg <johannes.berg@xxxxxxxxx> --- net/mac80211/key.c | 7 ++++--- net/mac80211/mesh_pathtbl.c | 6 ++++-- net/mac80211/mesh_sync.c | 2 +- 3 files changed, 9 insertions(+), 6 deletions(-) diff --git a/net/mac80211/key.c b/net/mac80211/key.c index 6ff65a1ebaa9..16d97f044a20 100644 --- a/net/mac80211/key.c +++ b/net/mac80211/key.c @@ -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; diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c index 7d050ed6fe5a..cf032a8db9d7 100644 --- a/net/mac80211/mesh_pathtbl.c +++ b/net/mac80211/mesh_pathtbl.c @@ -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); diff --git a/net/mac80211/mesh_sync.c b/net/mac80211/mesh_sync.c index 2bc5dc25d5ad..09625d6205c3 100644 --- a/net/mac80211/mesh_sync.c +++ b/net/mac80211/mesh_sync.c @@ -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); -- 1.9.0 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
