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authorJohannes Berg <johannes.berg@intel.com>2012-11-29 01:25:20 +0100
committerJohannes Berg <johannes.berg@intel.com>2012-11-30 13:42:20 +0100
commit9caf03640279e64d0ba36539b42daa1b43a49486 (patch)
treecb094a4a577f61421d1b402e16f0e68f151d5726 /net/wireless/core.h
parentb9a9ada14aab17f08c1d9735601f1097cdcfc6de (diff)
cfg80211: fix BSS struct IE access races
When a BSS struct is updated, the IEs are currently overwritten or freed. This can lead to races if some other CPU is accessing the BSS struct and using the IEs concurrently. Fix this by always allocating the IEs in a new struct that holds the data and length and protecting access to this new struct with RCU. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/core.h')
-rw-r--r--net/wireless/core.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/net/wireless/core.h b/net/wireless/core.h
index 6183a0d25b8b..3563097169cb 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -138,8 +138,6 @@ struct cfg80211_internal_bss {
unsigned long ts;
struct kref ref;
atomic_t hold;
- bool beacon_ies_allocated;
- bool proberesp_ies_allocated;
/* must be last because of priv member */
struct cfg80211_bss pub;