linux_dsm_epyc7002/net/mac80211
Michal Kazior a00f4f6e04 mac80211: fix chantype recalc warning
When a device driver is unloaded local->interfaces
list is cleared. If there was more than 1
interface running and connected (bound to a
chanctx) then chantype recalc was called and it
ended up with compat being NULL causing a call
trace warning.

Warn if compat becomes NULL as a result of
incompatible bss_conf.chandef of interfaces bound
to a given channel context only.

The call trace looked like this:

 WARNING: CPU: 2 PID: 2594 at /devel/src/linux/net/mac80211/chan.c:557 ieee80211_recalc_chanctx_chantype+0x2cd/0x2e0()
 Modules linked in: ath10k_pci(-) ath10k_core ath
 CPU: 2 PID: 2594 Comm: rmmod Tainted: G        W     3.16.0-rc1+ #150
 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
  0000000000000009 ffff88001ea279c0 ffffffff818dfa93 0000000000000000
  ffff88001ea279f8 ffffffff810514a8 ffff88001ce09cd0 ffff88001e03cc58
  0000000000000000 ffff88001ce08840 ffff88001ce09cd0 ffff88001ea27a08
 Call Trace:
  [<ffffffff818dfa93>] dump_stack+0x4d/0x66
  [<ffffffff810514a8>] warn_slowpath_common+0x78/0xa0
  [<ffffffff81051585>] warn_slowpath_null+0x15/0x20
  [<ffffffff818a407d>] ieee80211_recalc_chanctx_chantype+0x2cd/0x2e0
  [<ffffffff818a3dda>] ? ieee80211_recalc_chanctx_chantype+0x2a/0x2e0
  [<ffffffff818a4919>] ieee80211_assign_vif_chanctx+0x1a9/0x770
  [<ffffffff818a6220>] __ieee80211_vif_release_channel+0x70/0x130
  [<ffffffff818a6dd3>] ieee80211_vif_release_channel+0x43/0xb0
  [<ffffffff81885f4e>] ieee80211_stop_ap+0x21e/0x5a0
  [<ffffffff8184b9b5>] __cfg80211_stop_ap+0x85/0x520
  [<ffffffff8181c188>] __cfg80211_leave+0x68/0x120
  [<ffffffff8181c268>] cfg80211_leave+0x28/0x40
  [<ffffffff8181c5f3>] cfg80211_netdev_notifier_call+0x373/0x6b0
  [<ffffffff8107f965>] notifier_call_chain+0x55/0x110
  [<ffffffff8107fa41>] raw_notifier_call_chain+0x11/0x20
  [<ffffffff816a8dc0>] call_netdevice_notifiers_info+0x30/0x60
  [<ffffffff816a8eb9>] __dev_close_many+0x59/0xf0
  [<ffffffff816a9021>] dev_close_many+0x81/0x120
  [<ffffffff816aa1c5>] rollback_registered_many+0x115/0x2a0
  [<ffffffff816aa3a6>] unregister_netdevice_many+0x16/0xa0
  [<ffffffff8187d841>] ieee80211_remove_interfaces+0x121/0x1b0
  [<ffffffff8185e0e6>] ieee80211_unregister_hw+0x56/0x110
  [<ffffffffa0011ac4>] ath10k_mac_unregister+0x14/0x60 [ath10k_core]
  [<ffffffffa0014fe7>] ath10k_core_unregister+0x27/0x40 [ath10k_core]
  [<ffffffffa003b1f4>] ath10k_pci_remove+0x44/0xa0 [ath10k_pci]
  [<ffffffff81373138>] pci_device_remove+0x28/0x60
  [<ffffffff814cb534>] __device_release_driver+0x64/0xd0
  [<ffffffff814cbcc8>] driver_detach+0xb8/0xc0
  [<ffffffff814cb23a>] bus_remove_driver+0x4a/0xb0
  [<ffffffff814cc697>] driver_unregister+0x27/0x50

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-08-29 13:06:01 +02:00
..
aes_ccm.c mac80211: remove VLAIS usage from mac80211 2014-04-09 10:55:27 +02:00
aes_ccm.h mac80211: port CCMP to cryptoapi's CCM driver 2013-10-11 15:38:20 +02:00
aes_cmac.c mac80211: fix checkpatch errors 2013-12-18 10:33:06 +01:00
aes_cmac.h mac80211: fix checkpatch errors 2013-12-18 10:33:06 +01:00
agg-rx.c mac80211: add support for Rx reordering offloading 2014-07-21 17:42:07 +02:00
agg-tx.c mac80211: introduce refcount for queue_stop_reasons 2014-06-23 14:22:25 +02:00
cfg.c mac80211: don't duplicate station QoS capability data 2014-08-15 14:38:08 +02:00
cfg.h mac80211: make cfg80211 ops and privid const 2014-02-04 21:48:21 +01:00
chan.c mac80211: fix chantype recalc warning 2014-08-29 13:06:01 +02:00
debug.h mac80211: process the CSA frame for mesh accordingly 2013-10-28 15:05:28 +01:00
debugfs_key.c mac80211: move sdata debugfs dir to vif 2013-03-18 20:10:04 +01:00
debugfs_key.h
debugfs_netdev.c mac80211: don't check netdev state for debugfs read/write 2014-05-28 16:22:48 +02:00
debugfs_netdev.h mac80211: fix some missing includes 2014-04-09 14:49:43 +02:00
debugfs_sta.c mac80211: don't duplicate station QoS capability data 2014-08-15 14:38:08 +02:00
debugfs_sta.h
debugfs.c mac80211: use RCU_INIT_POINTER 2014-04-09 10:55:30 +02:00
debugfs.h mac80211: fix some missing includes 2014-04-09 14:49:43 +02:00
driver-ops.h mac80211: split sched scan IEs 2014-06-25 09:10:43 +02:00
ethtool.c cfg80211: make ethtool the driver's responsibility 2014-06-23 11:05:33 +02:00
event.c
ht.c mac80211: set Rx highest rate in ht_cap 2014-07-21 12:14:04 +02:00
ibss.c mac80211: don't duplicate station QoS capability data 2014-08-15 14:38:08 +02:00
ieee80211_i.h mac80211: make ieee80211_vif_use_reserved_switch static 2014-08-26 11:15:35 +02:00
iface.c Merge tag 'master-2014-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next 2014-07-28 17:36:25 -07:00
Kconfig mac80211: remove PID rate control 2014-06-23 11:05:23 +02:00
key.c mac80211: Fix accounting of the tailroom-needed counter 2014-08-26 11:15:59 +02:00
key.h mac80211: free all AP/VLAN keys at once 2013-12-16 11:29:48 +01:00
led.c mac80211: use oneshot blink API for LED triggers 2013-08-01 10:48:49 +02:00
led.h mac80211: use oneshot blink API for LED triggers 2013-08-01 10:48:49 +02:00
main.c mac80211: introduce refcount for queue_stop_reasons 2014-06-23 14:22:25 +02:00
Makefile cfg80211: make ethtool the driver's responsibility 2014-06-23 11:05:33 +02:00
mesh_hwmp.c mac80211: remove unnecessary break after return 2014-07-15 16:27:00 -07:00
mesh_pathtbl.c mac80211: Replace rcu_dereference() with rcu_access_pointer() 2014-08-27 12:14:10 +02:00
mesh_plink.c mac80211: mesh_plink: use get_unaligned_le16 instead of memcpy 2014-08-26 11:15:34 +02:00
mesh_ps.c mac80211: clear sequence/fragment number in QoS-null frames 2014-03-05 15:49:54 +01:00
mesh_sync.c mac80211: remove BUG_ON usage 2014-04-29 17:59:27 +02:00
mesh.c mac80211: move csa counters from sdata to beacon/presp 2014-06-23 14:22:06 +02:00
mesh.h mac80211: use put_unaligned_le in mesh when necessary 2013-11-25 20:51:55 +01:00
michael.c
michael.h mac80211: fix some missing includes 2014-04-09 14:49:43 +02:00
mlme.c mac80211: disable 40MHz support in case of 20MHz AP 2014-08-15 14:38:08 +02:00
offchannel.c mac80211: introduce refcount for queue_stop_reasons 2014-06-23 14:22:25 +02:00
pm.c mac80211: introduce refcount for queue_stop_reasons 2014-06-23 14:22:25 +02:00
rate.c mac80211: remove module handling from rate control ops 2014-02-04 21:48:26 +01:00
rate.h mac80211: remove PID rate control 2014-06-23 11:05:23 +02:00
rc80211_minstrel_debugfs.c mac80211: cosmetics for minstrel_debugfs 2013-04-17 17:08:23 +02:00
rc80211_minstrel_ht_debugfs.c mac80211: minstrel_ht: replace some occurences of MCS_GROUP_RATES 2013-11-25 20:52:07 +01:00
rc80211_minstrel_ht.c mac80211: export the expected throughput 2014-05-21 09:15:16 +02:00
rc80211_minstrel_ht.h mac80211/minstrel_ht: use the new rate control API 2013-04-22 16:16:41 +02:00
rc80211_minstrel.c mac80211: export the expected throughput 2014-05-21 09:15:16 +02:00
rc80211_minstrel.h mac80211: make rate control ops const 2014-02-04 21:48:21 +01:00
rx.c cfg80211: remove @gfp parameter from cfg80211_rx_mgmt() 2014-08-26 11:15:58 +02:00
scan.c mac80211: scan: Replace rcu_assign_pointer() with RCU_INIT_POINTER() 2014-08-26 11:16:31 +02:00
spectmgmt.c mac80211: fix the mesh channel switch support 2013-11-25 16:50:13 +01:00
sta_info.c mac80211: don't duplicate station QoS capability data 2014-08-15 14:38:08 +02:00
sta_info.h mac80211: don't duplicate station QoS capability data 2014-08-15 14:38:08 +02:00
status.c net: Mac80211: Remove silly timespec dance 2014-06-23 14:22:21 +02:00
tdls.c mac80211: don't duplicate station QoS capability data 2014-08-15 14:38:08 +02:00
tkip.c mac80211: fix checkpatch errors 2013-12-18 10:33:06 +01:00
tkip.h
trace.c mac80211: trace debug messages 2012-06-24 11:33:18 +02:00
trace.h mac80211: protect TDLS discovery session 2014-06-23 14:28:19 +02:00
tx.c mac80211: don't resize skbs needlessly 2014-08-26 11:16:00 +02:00
util.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next 2014-07-22 13:49:34 -04:00
vht.c mac80211: disable VHT for TDLS 2014-07-21 12:14:04 +02:00
wep.c mac80211: remove weak WEP IV accounting 2014-06-23 11:05:31 +02:00
wep.h
wme.c mac80211: don't duplicate station QoS capability data 2014-08-15 14:38:08 +02:00
wme.h mac80211: save wmm_acm per sdata 2012-06-20 17:35:22 +02:00
wpa.c mac80211: fix a potential NULL access in ieee80211_crypto_hw_decrypt 2014-07-21 12:34:08 +02:00
wpa.h mac80211: add generic cipher scheme support 2013-11-25 20:50:52 +01:00