kernel_samsung_sm7125

jenna

History

Juuso Oikarinen 685429623f mac80211: Fix circular locking dependency in ARP filter handling There is a circular locking dependency when configuring the hardware ARP filters on association, occurring when flushing the mac80211 workqueue. This is what happens: [ 92.026800] ======================================================= [ 92.030507] [ INFO: possible circular locking dependency detected ] [ 92.030507] 2.6.34-04781-g2b2c009 #85 [ 92.030507] ------------------------------------------------------- [ 92.030507] modprobe/5225 is trying to acquire lock: [ 92.030507] ((wiphy_name(local->hw.wiphy))){+.+.+.}, at: [<ffffffff8105b5c0>] flush_workq ueue+0x0/0xb0 [ 92.030507] [ 92.030507] but task is already holding lock: [ 92.030507] (rtnl_mutex){+.+.+.}, at: [<ffffffff812b9ce2>] rtnl_lock+0x12/0x20 [ 92.030507] [ 92.030507] which lock already depends on the new lock. [ 92.030507] [ 92.030507] [ 92.030507] the existing dependency chain (in reverse order) is: [ 92.030507] [ 92.030507] -> #2 (rtnl_mutex){+.+.+.}: [ 92.030507] [<ffffffff810761fb>] lock_acquire+0xdb/0x110 [ 92.030507] [<ffffffff81341754>] mutex_lock_nested+0x44/0x300 [ 92.030507] [<ffffffff812b9ce2>] rtnl_lock+0x12/0x20 [ 92.030507] [<ffffffffa022d47c>] ieee80211_assoc_done+0x6c/0xe0 [mac80211] [ 92.030507] [<ffffffffa022f2ad>] ieee80211_work_work+0x31d/0x1280 [mac80211] [ 92.030507] -> #1 ((&local->work_work)){+.+.+.}: [ 92.030507] [<ffffffff810761fb>] lock_acquire+0xdb/0x110 [ 92.030507] [<ffffffff8105a51a>] worker_thread+0x22a/0x370 [ 92.030507] [<ffffffff8105ecc6>] kthread+0x96/0xb0 [ 92.030507] [<ffffffff81003a94>] kernel_thread_helper+0x4/0x10 [ 92.030507] [ 92.030507] -> #0 ((wiphy_name(local->hw.wiphy))){+.+.+.}: [ 92.030507] [<ffffffff81075fdc>] __lock_acquire+0x1c0c/0x1d50 [ 92.030507] [<ffffffff810761fb>] lock_acquire+0xdb/0x110 [ 92.030507] [<ffffffff8105b60e>] flush_workqueue+0x4e/0xb0 [ 92.030507] [<ffffffffa023ff7b>] ieee80211_stop_device+0x2b/0xb0 [mac80211] [ 92.030507] [<ffffffffa0231635>] ieee80211_stop+0x3e5/0x680 [mac80211] The locking in this case is quite complex. Fix the problem by rewriting the way the hardware ARP filter list is handled - i.e. make a copy of the address list to the bss_conf struct, and provide that list to the hardware driver when needed. The current patch will enable filtering also in promiscuous mode. This may need to be changed in the future. Reported-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>		15 years ago
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Kconfig	mac80211: add the minstrel_ht rate control algorithm	15 years ago
Makefile	mac80211: add the minstrel_ht rate control algorithm	15 years ago
aes_ccm.c	…
aes_ccm.h	…
aes_cmac.c	…
aes_cmac.h	…
agg-rx.c	mac80211: update aggregation documentation	15 years ago
agg-tx.c	mac80211: update aggregation documentation	15 years ago
cfg.c	cfg80211/mac80211: allow action frame TX/RX in IBSS	15 years ago
cfg.h	…
chan.c	mac80211: make a function static	15 years ago
debugfs.c	mac80211: reduce debugfs code size	15 years ago
debugfs.h	net: Remove unnecessary returns from void function()s	15 years ago
debugfs_key.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
debugfs_key.h	…
debugfs_netdev.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem	15 years ago
debugfs_netdev.h	mac80211: reduce reliance on netdev	15 years ago
debugfs_sta.c	mac80211: make TX aggregation start/stop request async	15 years ago
debugfs_sta.h	…
driver-ops.h	mac80211: Fix circular locking dependency in ARP filter handling	15 years ago
driver-trace.c	…
driver-trace.h	mac80211: Fix circular locking dependency in ARP filter handling	15 years ago
event.c	…
ht.c	mac80211: change TX aggregation locking	15 years ago
ibss.c	mac80211: remove BSS from cfg80211 list when leaving IBSS	15 years ago
ieee80211_i.h	mac80211: Fix circular locking dependency in ARP filter handling	15 years ago
iface.c	mac80211: Fix circular locking dependency in ARP filter handling	15 years ago
key.c	mac80211: simplify key locking	15 years ago
key.h	mac80211: simplify key locking	15 years ago
led.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
led.h	…
main.c	mac80211: Fix circular locking dependency in ARP filter handling	15 years ago
mesh.c	mac80211: pull mgmt frame rx into rx handler	15 years ago
mesh.h	mac80211: pull mgmt frame rx into rx handler	15 years ago
mesh_hwmp.c	mac80211: use common work struct	15 years ago
mesh_pathtbl.c	mac80211: use common work struct	15 years ago
mesh_plink.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem	15 years ago
michael.c	…
michael.h	…
mlme.c	mac80211: Fix circular locking dependency in ARP filter handling	15 years ago
offchannel.c	mac80211: Fixed netif_tx_wake_all_queues in IBSS mode	15 years ago
pm.c	mac80211: use common work struct	15 years ago
rate.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
rate.h	mac80211: add the minstrel_ht rate control algorithm	15 years ago
rc80211_minstrel.c	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	15 years ago
rc80211_minstrel.h	minstrel: make the rate control ops reusable from another rc implementation	15 years ago
rc80211_minstrel_debugfs.c	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	15 years ago
rc80211_minstrel_ht.c	mac80211: use RCU for TX aggregation	15 years ago
rc80211_minstrel_ht.h	mac80211: add the minstrel_ht rate control algorithm	15 years ago
rc80211_minstrel_ht_debugfs.c	mac80211: add the minstrel_ht rate control algorithm	15 years ago
rc80211_pid.h	…
rc80211_pid_algo.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
rc80211_pid_debugfs.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
rx.c	mac80211: fix mgmt frame accounting	15 years ago
scan.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6	15 years ago
spectmgmt.c	mac80211: reduce reliance on netdev	15 years ago
sta_info.c	mac80211: change RX aggregation locking	15 years ago
sta_info.h	mac80211: change RX aggregation locking	15 years ago
status.c	wireless: fix several minor description typos	15 years ago
tkip.c	mac80211: pass vif and station to update_tkip_key	15 years ago
tkip.h	…
tx.c	mac80211: make TX aggregation start/stop request async	15 years ago
util.c	mac80211: simplify station/aggregation code	15 years ago
wep.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
wep.h	…
wme.c	mac80211: fix-up build breakage in 2.6.33	15 years ago
wme.h	mac80211: fix skb buffering issue	15 years ago
work.c	wireless: fix several minor description typos	15 years ago
wpa.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
wpa.h	…