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linux/net/mac80211
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Johannes Berg bde59c475e mac80211: fix deadlock in driver-managed RX BA session start 
When an RX BA session is started by the driver, and it has to tell
mac80211 about it, the corresponding bit in tid_rx_manage_offl gets
set and the BA session work is scheduled. Upon testing this bit, it
will call __ieee80211_start_rx_ba_session(), thus deadlocking as it
already holds the ampdu_mlme.mtx, which that acquires again.

Fix this by adding ___ieee80211_start_rx_ba_session(), a version of
the function that requires the mutex already held.

Cc: stable@vger.kernel.org
Fixes: 699cb58c8a ("mac80211: manage RX BA session offload without SKB queue")
Reported-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
 		2017-09-06 15:22:02 +02:00
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Kconfig
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Makefile
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aes_ccm.c
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aes_ccm.h
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aes_cmac.c
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aes_cmac.h
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aes_gcm.c
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aes_gcm.h
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aes_gmac.c
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aes_gmac.h
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agg-rx.c mac80211: fix deadlock in driver-managed RX BA session start 2017-09-06 15:22:02 +02:00
agg-tx.c mac80211: agg-tx: call drv_wake_tx_queue in proper context 2017-09-05 16:25:07 +02:00
cfg.c networking: make skb_put & friends return void pointers 2017-06-16 11:48:39 -04:00
chan.c
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debug.h
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debugfs.c
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debugfs.h
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debugfs_key.c
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debugfs_key.h
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debugfs_netdev.c networking: convert many more places to skb_put_zero() 2017-06-16 11:48:35 -04:00
debugfs_netdev.h
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debugfs_sta.c mac80211: Dynamically set CoDel parameters per station 2017-05-17 16:03:40 +02:00
debugfs_sta.h
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driver-ops.c
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driver-ops.h
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ethtool.c
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fils_aead.c
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fils_aead.h
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ht.c mac80211: fix deadlock in driver-managed RX BA session start 2017-09-06 15:22:02 +02:00
ibss.c networking: introduce and use skb_put_data() 2017-06-16 11:48:37 -04:00
ieee80211_i.h mac80211: fix deadlock in driver-managed RX BA session start 2017-09-06 15:22:02 +02:00
iface.c mac80211: Fix null pointer dereference with iTXQ support 2017-09-05 11:28:51 +02:00
key.c
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key.h
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led.c
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led.h
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main.c mac80211: disentangle iflist_mtx and chanctx_mtx 2017-04-26 23:17:44 +02:00
mesh.c networking: make skb_put & friends return void pointers 2017-06-16 11:48:39 -04:00
mesh.h
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mesh_hwmp.c networking: convert many more places to skb_put_zero() 2017-06-16 11:48:35 -04:00
mesh_pathtbl.c mac80211: Use setup_timer instead of init_timer for mesh path 2017-03-16 10:54:04 +01:00
mesh_plink.c networking: convert many more places to skb_put_zero() 2017-06-16 11:48:35 -04:00
mesh_ps.c networking: make skb_put & friends return void pointers 2017-06-16 11:48:39 -04:00
mesh_sync.c
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michael.c
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michael.h
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mlme.c mac80211: fix incorrect assignment of reassoc value 2017-09-05 09:04:20 +02:00
ocb.c
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offchannel.c mac80211: flush hw_roc_start work before cancelling the ROC 2017-09-05 16:25:07 +02:00
pm.c cfg80211: add request id to cfg80211_sched_scan_*() api 2017-04-28 14:51:43 +02:00
rate.c mac80211: Dynamically set CoDel parameters per station 2017-05-17 16:03:40 +02:00
rate.h mac80211: make rate control tx status API more extensible 2017-04-28 10:57:33 +02:00
rc80211_minstrel.c mac80211: make rate control tx status API more extensible 2017-04-28 10:57:33 +02:00
rc80211_minstrel.h
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rc80211_minstrel_debugfs.c
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rc80211_minstrel_ht.c mac80211: make rate control tx status API more extensible 2017-04-28 10:57:33 +02:00
rc80211_minstrel_ht.h
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rc80211_minstrel_ht_debugfs.c
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rx.c networking: make skb_push & __skb_push return void pointers 2017-06-16 11:48:40 -04:00
scan.c cfg80211: add request id to cfg80211_sched_scan_*() api 2017-04-28 14:51:43 +02:00
spectmgmt.c networking: convert many more places to skb_put_zero() 2017-06-16 11:48:35 -04:00
sta_info.c networking: make skb_put & friends return void pointers 2017-06-16 11:48:39 -04:00
sta_info.h mac80211: manage RX BA session offload without SKB queue 2017-06-08 14:16:29 +02:00
status.c networking: make skb_push & __skb_push return void pointers 2017-06-16 11:48:40 -04:00
tdls.c net: manual clean code which call skb_put_[data:zero] 2017-06-20 13:30:15 -04:00
tkip.c
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tkip.h
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trace.c
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trace.h mac80211: add the action to the drv_ampdu_action tracepoint 2017-06-13 11:06:39 +02:00
trace_msg.h
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tx.c mac80211: fix VLAN handling with TXQs 2017-09-05 11:28:43 +02:00
util.c mac80211: add MESH IE in the correct order 2017-09-05 11:28:51 +02:00
vht.c
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wep.c
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wep.h
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wme.c
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wme.h
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wpa.c networking: make skb_put & friends return void pointers 2017-06-16 11:48:39 -04:00
wpa.h
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