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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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a00f4f6e04
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> |
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.. | ||
aes_ccm.c | ||
aes_ccm.h | ||
aes_cmac.c | ||
aes_cmac.h | ||
agg-rx.c | ||
agg-tx.c | ||
cfg.c | ||
cfg.h | ||
chan.c | ||
debug.h | ||
debugfs_key.c | ||
debugfs_key.h | ||
debugfs_netdev.c | ||
debugfs_netdev.h | ||
debugfs_sta.c | ||
debugfs_sta.h | ||
debugfs.c | ||
debugfs.h | ||
driver-ops.h | ||
ethtool.c | ||
event.c | ||
ht.c | ||
ibss.c | ||
ieee80211_i.h | ||
iface.c | ||
Kconfig | ||
key.c | ||
key.h | ||
led.c | ||
led.h | ||
main.c | ||
Makefile | ||
mesh_hwmp.c | ||
mesh_pathtbl.c | ||
mesh_plink.c | ||
mesh_ps.c | ||
mesh_sync.c | ||
mesh.c | ||
mesh.h | ||
michael.c | ||
michael.h | ||
mlme.c | ||
offchannel.c | ||
pm.c | ||
rate.c | ||
rate.h | ||
rc80211_minstrel_debugfs.c | ||
rc80211_minstrel_ht_debugfs.c | ||
rc80211_minstrel_ht.c | ||
rc80211_minstrel_ht.h | ||
rc80211_minstrel.c | ||
rc80211_minstrel.h | ||
rx.c | ||
scan.c | ||
spectmgmt.c | ||
sta_info.c | ||
sta_info.h | ||
status.c | ||
tdls.c | ||
tkip.c | ||
tkip.h | ||
trace.c | ||
trace.h | ||
tx.c | ||
util.c | ||
vht.c | ||
wep.c | ||
wep.h | ||
wme.c | ||
wme.h | ||
wpa.c | ||
wpa.h |