diff options
Diffstat (limited to 'package/kernel')
3 files changed, 200 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/349-mac80211-fix-legacy-invalid-rxrate.patch b/package/kernel/mac80211/patches/349-mac80211-fix-legacy-invalid-rxrate.patch new file mode 100644 index 0000000000..c160515892 --- /dev/null +++ b/package/kernel/mac80211/patches/349-mac80211-fix-legacy-invalid-rxrate.patch @@ -0,0 +1,60 @@ +From a17d93ff3a950fefaea40e4a4bf3669b9137c533 Mon Sep 17 00:00:00 2001 +From: Ben Greear <greearb@candelatech.com> +Date: Wed, 14 Dec 2016 11:30:38 -0800 +Subject: [PATCH] mac80211: fix legacy and invalid rx-rate report + +This fixes obtaining the rate info via sta_set_sinfo +when the rx rate is invalid (for instance, on IBSS +interface that has received no frames from one of its +peers). + +Also initialize rinfo->flags for legacy rates, to not +rely on the whole sinfo being initialized to zero. + +Signed-off-by: Ben Greear <greearb@candelatech.com> +Signed-off-by: Johannes Berg <johannes.berg@intel.com> +--- + net/mac80211/sta_info.c | 14 ++++++++------ + 1 file changed, 8 insertions(+), 6 deletions(-) + +--- a/net/mac80211/sta_info.c ++++ b/net/mac80211/sta_info.c +@@ -1975,6 +1975,7 @@ static void sta_stats_decode_rate(struct + u16 brate; + unsigned int shift; + ++ rinfo->flags = 0; + sband = local->hw.wiphy->bands[(rate >> 4) & 0xf]; + brate = sband->bitrates[rate & 0xf].bitrate; + if (rinfo->bw == RATE_INFO_BW_5) +@@ -1990,14 +1991,15 @@ static void sta_stats_decode_rate(struct + rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; + } + +-static void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) ++static int sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) + { + u16 rate = ACCESS_ONCE(sta_get_last_rx_stats(sta)->last_rate); + + if (rate == STA_STATS_RATE_INVALID) +- rinfo->flags = 0; +- else +- sta_stats_decode_rate(sta->local, rate, rinfo); ++ return -EINVAL; ++ ++ sta_stats_decode_rate(sta->local, rate, rinfo); ++ return 0; + } + + static void sta_set_tidstats(struct sta_info *sta, +@@ -2202,8 +2204,8 @@ void sta_set_sinfo(struct sta_info *sta, + } + + if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE))) { +- sta_set_rate_info_rx(sta, &sinfo->rxrate); +- sinfo->filled |= BIT(NL80211_STA_INFO_RX_BITRATE); ++ if (sta_set_rate_info_rx(sta, &sinfo->rxrate) == 0) ++ sinfo->filled |= BIT(NL80211_STA_INFO_RX_BITRATE); + } + + sinfo->filled |= BIT(NL80211_STA_INFO_TID_STATS); diff --git a/package/kernel/mac80211/patches/350-mac80211-init-fastxmit-later.patch b/package/kernel/mac80211/patches/350-mac80211-init-fastxmit-later.patch new file mode 100644 index 0000000000..0b640efea9 --- /dev/null +++ b/package/kernel/mac80211/patches/350-mac80211-init-fastxmit-later.patch @@ -0,0 +1,41 @@ +From 35f432a03e41d3bf08c51ede917f94e2288fbe8c Mon Sep 17 00:00:00 2001 +From: Johannes Berg <johannes.berg@intel.com> +Date: Mon, 2 Jan 2017 11:19:29 +0100 +Subject: [PATCH] mac80211: initialize fast-xmit 'info' later + +In ieee80211_xmit_fast(), 'info' is initialized to point to the skb +that's passed in, but that skb may later be replaced by a clone (if +it was shared), leading to an invalid pointer. + +This can lead to use-after-free and also later crashes since the +real SKB's info->hw_queue doesn't get initialized properly. + +Fix this by assigning info only later, when it's needed, after the +skb replacement (may have) happened. + +Cc: stable@vger.kernel.org +Reported-by: Ben Greear <greearb@candelatech.com> +Signed-off-by: Johannes Berg <johannes.berg@intel.com> +--- + net/mac80211/tx.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +--- a/net/mac80211/tx.c ++++ b/net/mac80211/tx.c +@@ -3297,7 +3297,7 @@ static bool ieee80211_xmit_fast(struct i + int extra_head = fast_tx->hdr_len - (ETH_HLEN - 2); + int hw_headroom = sdata->local->hw.extra_tx_headroom; + struct ethhdr eth; +- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); ++ struct ieee80211_tx_info *info; + struct ieee80211_hdr *hdr = (void *)fast_tx->hdr; + struct ieee80211_tx_data tx; + ieee80211_tx_result r; +@@ -3361,6 +3361,7 @@ static bool ieee80211_xmit_fast(struct i + memcpy(skb->data + fast_tx->da_offs, eth.h_dest, ETH_ALEN); + memcpy(skb->data + fast_tx->sa_offs, eth.h_source, ETH_ALEN); + ++ info = IEEE80211_SKB_CB(skb); + memset(info, 0, sizeof(*info)); + info->band = fast_tx->band; + info->control.vif = &sdata->vif; diff --git a/package/kernel/mac80211/patches/351-mac80211-fix-tid-agg-null.patch b/package/kernel/mac80211/patches/351-mac80211-fix-tid-agg-null.patch new file mode 100644 index 0000000000..9148cfa426 --- /dev/null +++ b/package/kernel/mac80211/patches/351-mac80211-fix-tid-agg-null.patch @@ -0,0 +1,99 @@ +From 1c3d185a9a0b136a58e73b02912d593d0303d1da Mon Sep 17 00:00:00 2001 +From: Johannes Berg <johannes.berg@intel.com> +Date: Tue, 18 Oct 2016 23:12:08 +0300 +Subject: [PATCH] mac80211: fix tid_agg_rx NULL dereference + +On drivers setting the SUPPORTS_REORDERING_BUFFER hardware flag, +we crash when the peer sends an AddBA request while we already +have a session open on the seame TID; this is because on those +drivers, the tid_agg_rx is left NULL even though the session is +valid, and the agg_session_valid bit is set. + +To fix this, store the dialog tokens outside the tid_agg_rx to +be able to compare them to the received AddBA request. + +Fixes: f89e07d4cf26 ("mac80211: agg-rx: refuse ADDBA Request with timeout update") +Reported-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> +Signed-off-by: Johannes Berg <johannes.berg@intel.com> +--- + net/mac80211/agg-rx.c | 8 ++------ + net/mac80211/debugfs_sta.c | 2 +- + net/mac80211/sta_info.h | 4 ++-- + 3 files changed, 5 insertions(+), 9 deletions(-) + +--- a/net/mac80211/agg-rx.c ++++ b/net/mac80211/agg-rx.c +@@ -315,11 +315,7 @@ void __ieee80211_start_rx_ba_session(str + mutex_lock(&sta->ampdu_mlme.mtx); + + if (test_bit(tid, sta->ampdu_mlme.agg_session_valid)) { +- tid_agg_rx = rcu_dereference_protected( +- sta->ampdu_mlme.tid_rx[tid], +- lockdep_is_held(&sta->ampdu_mlme.mtx)); +- +- if (tid_agg_rx->dialog_token == dialog_token) { ++ if (sta->ampdu_mlme.tid_rx_token[tid] == dialog_token) { + ht_dbg_ratelimited(sta->sdata, + "updated AddBA Req from %pM on tid %u\n", + sta->sta.addr, tid); +@@ -396,7 +392,6 @@ void __ieee80211_start_rx_ba_session(str + } + + /* update data */ +- tid_agg_rx->dialog_token = dialog_token; + tid_agg_rx->ssn = start_seq_num; + tid_agg_rx->head_seq_num = start_seq_num; + tid_agg_rx->buf_size = buf_size; +@@ -418,6 +413,7 @@ end: + if (status == WLAN_STATUS_SUCCESS) { + __set_bit(tid, sta->ampdu_mlme.agg_session_valid); + __clear_bit(tid, sta->ampdu_mlme.unexpected_agg); ++ sta->ampdu_mlme.tid_rx_token[tid] = dialog_token; + } + mutex_unlock(&sta->ampdu_mlme.mtx); + +--- a/net/mac80211/debugfs_sta.c ++++ b/net/mac80211/debugfs_sta.c +@@ -205,7 +205,7 @@ static ssize_t sta_agg_status_read(struc + p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i); + p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x", !!tid_rx); + p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x", +- tid_rx ? tid_rx->dialog_token : 0); ++ tid_rx ? sta->ampdu_mlme.tid_rx_token[i] : 0); + p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x", + tid_rx ? tid_rx->ssn : 0); + +--- a/net/mac80211/sta_info.h ++++ b/net/mac80211/sta_info.h +@@ -184,7 +184,6 @@ struct tid_ampdu_tx { + * @ssn: Starting Sequence Number expected to be aggregated. + * @buf_size: buffer size for incoming A-MPDUs + * @timeout: reset timer value (in TUs). +- * @dialog_token: dialog token for aggregation session + * @rcu_head: RCU head used for freeing this struct + * @reorder_lock: serializes access to reorder buffer, see below. + * @auto_seq: used for offloaded BA sessions to automatically pick head_seq_and +@@ -213,7 +212,6 @@ struct tid_ampdu_rx { + u16 ssn; + u16 buf_size; + u16 timeout; +- u8 dialog_token; + bool auto_seq; + bool removed; + }; +@@ -225,6 +223,7 @@ struct tid_ampdu_rx { + * to tid_tx[idx], which are protected by the sta spinlock) + * tid_start_tx is also protected by sta->lock. + * @tid_rx: aggregation info for Rx per TID -- RCU protected ++ * @tid_rx_token: dialog tokens for valid aggregation sessions + * @tid_rx_timer_expired: bitmap indicating on which TIDs the + * RX timer expired until the work for it runs + * @tid_rx_stop_requested: bitmap indicating which BA sessions per TID the +@@ -243,6 +242,7 @@ struct sta_ampdu_mlme { + struct mutex mtx; + /* rx */ + struct tid_ampdu_rx __rcu *tid_rx[IEEE80211_NUM_TIDS]; ++ u8 tid_rx_token[IEEE80211_NUM_TIDS]; + unsigned long tid_rx_timer_expired[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; + unsigned long tid_rx_stop_requested[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; + unsigned long agg_session_valid[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]; |