* rtw88: rtw8822cu: Kernel warning in cfg80211: disconnect_work at net/wireless/core.h:231 on CPU 0
@ 2024-09-24 7:06 petter
2024-09-25 3:30 ` Ping-Ke Shih
0 siblings, 1 reply; 5+ messages in thread
From: petter @ 2024-09-24 7:06 UTC (permalink / raw)
To: linux-wireless; +Cc: pkshih, rtl8821cerfe2, morrownr, s.hauer
Hi,
I have an issue with my 8822cu based usb device on >= 6.6 Linux with AP
mode. Using latest changes AP-mode seems to work fairly good. But when
enabling/disabling it I seems to always get below. It sometimes happens
without using AP-mode also, when for example disconnection happens due
to bad connection. Any ideas what might be causing this? Please also let
me know if you want additional debugging logs etc.
BR Petter
```
[ 1429.886683] WARNING: CPU: 0 PID: 9 at net/wireless/core.h:231
disconnect_work+0xb8/0x144 [cfg80211]
[ 1429.898367] Modules linked in: rtw88_8822cu rtw88_8822c rtw88_usb
rtw88_core mac80211 libarc4 cfg80211 btusb btrtl btintel btbcm btmtk
imx_sdma ip_tables x_tables
[ 1429.913362] CPU: 0 PID: 9 Comm: kworker/0:1 Not tainted
6.6.51-00141-ga1649b6f8ed6 #7
[ 1429.921228] Hardware name: Freescale i.MX6 SoloX (Device Tree)
[ 1429.927082] Workqueue: events disconnect_work [cfg80211]
[ 1429.933556] unwind_backtrace from show_stack+0x10/0x14
[ 1429.938833] show_stack from dump_stack_lvl+0x58/0x70
[ 1429.943922] dump_stack_lvl from __warn+0x70/0x1c0
[ 1429.948759] __warn from warn_slowpath_fmt+0x16c/0x294
[ 1429.953939] warn_slowpath_fmt from disconnect_work+0xb8/0x144
[cfg80211]
[ 1429.961935] disconnect_work [cfg80211] from
process_one_work+0x204/0x620
[ 1429.969851] process_one_work from worker_thread+0x1b0/0x474
[ 1429.975549] worker_thread from kthread+0x10c/0x12c
[ 1429.980461] kthread from ret_from_fork+0x14/0x24
[ 1429.985194] Exception stack(0xf0855fb0 to 0xf0855ff8)
[ 1429.990268] 5fa0: 00000000
00000000 00000000 00000000
[ 1429.998466] 5fc0: 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 1430.006662] 5fe0: 00000000 00000000 00000000 00000000 00000013
00000000
[ 1430.014300] irq event stamp: 1984773
[ 1430.017924] hardirqs last enabled at (1984781): [<c019e8e0>]
console_unlock+0x134/0x164
[ 1430.026190] hardirqs last disabled at (1984796): [<c019e8cc>]
console_unlock+0x120/0x164
[ 1430.034412] softirqs last enabled at (1984794): [<c012f3b4>]
handle_softirqs+0x2ac/0x49c
[ 1430.042695] softirqs last disabled at (1984789): [<c012f74c>]
__irq_exit_rcu+0x154/0x194
[ 1430.050941] ---[ end trace 0000000000000000 ]---
[ 1429.881452] ------------[ cut here ]------------
[ 1429.886683] WARNING: CPU: 0 PID: 9 at net/wireless/core.h:231
disconnect_work+0xb8/0x144 [cfg80211]
[ 1429.898367] Modules linked in: rtw88_8822cu rtw88_8822c rtw88_usb
rtw88_core mac80211 libarc4 cfg80211 btusb btrtl btintel btbcm btmtk
imx_sdma ip_tables x_tables
[ 1429.913362] CPU: 0 PID: 9 Comm: kworker/0:1 Not tainted
6.6.51-00141-ga1649b6f8ed6 #7
[ 1429.921228] Hardware name: Freescale i.MX6 SoloX (Device Tree)
[ 1429.927082] Workqueue: events disconnect_work [cfg80211]
[ 1429.933556] unwind_backtrace from show_stack+0x10/0x14
[ 1429.938833] show_stack from dump_stack_lvl+0x58/0x70
[ 1429.943922] dump_stack_lvl from __warn+0x70/0x1c0
[ 1429.948759] __warn from warn_slowpath_fmt+0x16c/0x294
[ 1429.953939] warn_slowpath_fmt from disconnect_work+0xb8/0x144
[cfg80211]
[ 1429.961935] disconnect_work [cfg80211] from
process_one_work+0x204/0x620
[ 1429.969851] process_one_work from worker_thread+0x1b0/0x474
[ 1429.975549] worker_thread from kthread+0x10c/0x12c
[ 1429.980461] kthread from ret_from_fork+0x14/0x24
[ 1429.985194] Exception stack(0xf0855fb0 to 0xf0855ff8)
[ 1429.990268] 5fa0: 00000000
00000000 00000000 00000000
[ 1429.998466] 5fc0: 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 1430.006662] 5fe0: 00000000 00000000 00000000 00000000 00000013
00000000
[ 1430.014300] irq event stamp: 1984773
[ 1430.017924] hardirqs last enabled at (1984781): [<c019e8e0>]
console_unlock+0x134/0x164
[ 1430.026190] hardirqs last disabled at (1984796): [<c019e8cc>]
console_unlock+0x120/0x164
[ 1430.034412] softirqs last enabled at (1984794): [<c012f3b4>]
handle_softirqs+0x2ac/0x49c
[ 1430.042695] softirqs last disabled at (1984789): [<c012f74c>]
__irq_exit_rcu+0x154/0x194
[ 1430.050941] ---[ end trace 0000000000000000 ]---
[ 1430.305675] ------------[ cut here ]------------
[ 1430.310778] WARNING: CPU: 0 PID: 9 at net/wireless/core.h:246
cfg80211_beaconing_iface_active+0x124/0x144 [cfg80211]
[ 1430.322835] Modules linked in: rtw88_8822cu rtw88_8822c rtw88_usb
rtw88_core mac80211 libarc4 cfg80211 btusb btrtl btintel btbcm btmtk
imx_sdma ip_tables x_tables
[ 1430.338134] CPU: 0 PID: 9 Comm: kworker/0:1 Tainted: G W
6.6.51-00141-ga1649b6f8ed6 #7
[ 1430.347480] Hardware name: Freescale i.MX6 SoloX (Device Tree)
[ 1430.353333] Workqueue: events disconnect_work [cfg80211]
[ 1430.359806] unwind_backtrace from show_stack+0x10/0x14
[ 1430.365085] show_stack from dump_stack_lvl+0x58/0x70
[ 1430.370173] dump_stack_lvl from __warn+0x70/0x1c0
[ 1430.375009] __warn from warn_slowpath_fmt+0x16c/0x294
[ 1430.380190] warn_slowpath_fmt from
cfg80211_beaconing_iface_active+0x124/0x144 [cfg80211]
[ 1430.389659] cfg80211_beaconing_iface_active [cfg80211] from
disconnect_work+0x100/0x144 [cfg80211]
[ 1430.400855] disconnect_work [cfg80211] from
process_one_work+0x204/0x620
[ 1430.408749] process_one_work from worker_thread+0x1b0/0x474
[ 1430.414448] worker_thread from kthread+0x10c/0x12c
[ 1430.419361] kthread from ret_from_fork+0x14/0x24
[ 1430.424099] Exception stack(0xf0855fb0 to 0xf0855ff8)
[ 1430.429173] 5fa0: 00000000
00000000 00000000 00000000
[ 1430.437373] 5fc0: 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 1430.445571] 5fe0: 00000000 00000000 00000000 00000000 00000013
00000000
[ 1430.452992] irq event stamp: 1985081
[ 1430.456613] hardirqs last enabled at (1985089): [<c019e8e0>]
console_unlock+0x134/0x164
[ 1430.464878] hardirqs last disabled at (1985110): [<c019e8cc>]
console_unlock+0x120/0x164
[ 1430.473098] softirqs last enabled at (1985108): [<c012f3b4>]
handle_softirqs+0x2ac/0x49c
[ 1430.481324] softirqs last disabled at (1985097): [<c012f74c>]
__irq_exit_rcu+0x154/0x194
[ 1430.489554] ---[ end trace 0000000000000000 ]---
[ 1430.305675] ------------[ cut here ]------------
[ 1430.310778] WARNING: CPU: 0 PID: 9 at net/wireless/core.h:246
cfg80211_beaconing_iface_active+0x124/0x144 [cfg80211]
[ 1430.322835] Modules linked in: rtw88_8822cu rtw88_8822c rtw88_usb
rtw88_core mac80211 libarc4 cfg80211 btusb btrtl btintel btbcm btmtk
imx_sdma ip_tables x_tables
[ 1430.338134] CPU: 0 PID: 9 Comm: kworker/0:1 Tai[ 1430.529638]
------------[ cut here ]------------
nted: G W 6.6.51-[ 1430.536236] WARNING: CPU: 0 PID: 9
at net/wireless/core.h:239 disconnect_work+0xe4/0x144 [cfg80211]
00141-ga1649b6f8ed6 #7
[ 1430.34[ 1430.548209] Modules linked in: rtw88_8822cu rtw88_8822c
rtw88_usb rtw88_core mac80211 libarc4 cfg80211 btusb btrtl btintel btbcm
btmtk imx_sdma ip_tables x_tables
7480] Hardware name: Freescale i.[ 1430.565496] CPU: 0 PID: 9 Comm:
kworker/0:1 Tainted: G W 6.6.51-00141-ga1649b6f8ed6 #7
[ 1430.577478] Hardware name: Freescale i.MX6 SoloX (Device Tree)
[ 1430.583331] Workqueue: events disconnect_work [cfg80211]
[ 1430.589790] unwind_backtrace from show_stack+0x10/0x14
[ 1430.595069] show_stack from dump_stack_lvl+0x58/0x70
[ 1430.600157] dump_stack_lvl from __warn+0x70/0x1c0
[ 1430.604994] __warn from warn_slowpath_fmt+0x16c/0x294
[ 1430.610177] warn_slowpath_fmt from disconnect_work+0xe4/0x144
[cfg80211]
[ 1430.618095] disconnect_work [cfg80211] from
process_one_work+0x204/0x620
[ 1430.625989] process_one_work from worker_thread+0x1b0/0x474
[ 1430.631687] worker_thread from kthread+0x10c/0x12c
[ 1430.636602] kthread from ret_from_fork+0x14/0x24
[ 1430.641335] Exception stack(0xf0855fb0 to 0xf0855ff8)
[ 1430.646412] 5fa0: 00000000
00000000 00000000 00000000
[ 1430.654610] 5fc0: 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 1430.662807] 5fe0: 00000000 00000000 00000000 00000000 00000013
00000000
MX6 SoloX (Device Tree)
[ 1430.3[ 1430.670230] irq event stamp: 1985387
53333] Workqueue: events disconne[ 1430.676059] hardirqs last enabled
at (1985407): [<c019e8e0>] console_unlock+0x134/0x164
ct_work [cfg80211]
[ 1430.359806[ 1430.686982] hardirqs last disabled at (1985416):
[<c019e8cc>] console_unlock+0x120/0x164
] unwind_backtrace from show_sta[ 1430.697999] softirqs last enabled
at (1985404): [<c012f3b4>] handle_softirqs+0x2ac/0x49c
ck+0x10/0x14
[ 1430.365085] sho[ 1430.709105] softirqs last disabled at (1985395):
[<c012f74c>] __irq_exit_rcu+0x154/0x194
w_stack from dump_stack_lvl+0x58/[ 1430.720445] ---[ end trace
0000000000000000 ]---
0x70
[ 1430.370173] dump_stack_lvl from __warn+0x70/0x1c0
[ 1430.375009] __warn from warn_slowpath_fmt+0x16c/0x294
[ 1430.380190] warn_slowpath_fmt from
cfg80211_beaconing_iface_active+0x124/0x144 [cfg80211]
[ 1430.389659] cfg80211_beaconing_iface_active [cfg80211] from
disconnect_work+0x100/0x144 [cfg80211]
[ 1430.400855] disconnect_work [cfg802[ 1430.757591] ------------[ cut
here ]------------
11] from process_one_work+0x204/0[ 1430.763348] WARNING: CPU: 0 PID: 9
at net/wireless/core.h:231 is_wiphy_all_set_reg_flag+0xb4/0x144
[cfg80211]
x620
[ 1430.408749] process_one[ 1430.776198] Modules linked in:
rtw88_8822cu rtw88_8822c rtw88_usb rtw88_core mac80211 libarc4 cfg80211
btusb btrtl btintel btbcm btmtk imx_sdma ip_tables x_tables
_work from worker_thread+0x1b0/0x[ 1430.793594] CPU: 0 PID: 9 Comm:
kworker/0:1 Tainted: G W 6.6.51-00141-ga1649b6f8ed6 #7
[ 1430.805471] Hardware name: Freescale i.MX6 SoloX (Device Tree)
[ 1430.811324] Workqueue: events disconnect_work [cfg80211]
[ 1430.817785] unwind_backtrace from show_stack+0x10/0x14
[ 1430.823062] show_stack from dump_stack_lvl+0x58/0x70
[ 1430.828150] dump_stack_lvl from __warn+0x70/0x1c0
[ 1430.832986] __warn from warn_slowpath_fmt+0x16c/0x294
[ 1430.838167] warn_slowpath_fmt from
is_wiphy_all_set_reg_flag+0xb4/0x144 [cfg80211]
[ 1430.846957] is_wiphy_all_set_reg_flag [cfg80211] from
regulatory_hint_disconnect+0xc/0xdc [cfg80211]
[ 1430.858313] regulatory_hint_disconnect [cfg80211] from
disconnect_work+0x130/0x144 [cfg80211]
[ 1430.869050] disconnect_work [cfg80211] from
process_one_work+0x204/0x620
[ 1430.876943] process_one_work from worker_thread+0x1b0/0x474
[ 1430.882642] worker_thread from kthread+0x10c/0x12c
[ 1430.887554] kthread from ret_from_fork+0x14/0x24
[ 1430.892290] Exception stack(0xf0855fb0 to 0xf0855ff8)
[ 1430.897364] 5fa0: 00000000
00000000 00000000 00000000
[ 1430.905561] 5fc0: 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 1430.913760] 5fe0: 00000000 00000000 00000000 00000000 00000013
00000000
474
[ 1430.414448] worker_threa[ 1430.921569] irq event stamp: 1985873
d from kthread+0x10c/0x12c
[ 143[ 1430.927055] hardirqs last enabled at (1985911): [<c019e8e0>]
console_unlock+0x134/0x164
0.419361] kthread from ret_from_[ 1430.938018] hardirqs last disabled
at (1985920): [<c019e8cc>] console_unlock+0x120/0x164
fork+0x14/0x24
[ 1430.424099] Ex[ 1430.949023] softirqs last enabled at (1985908):
[<c012f3b4>] handle_softirqs+0x2ac/0x49c
ception stack(0xf0855fb0 to 0xf08[ 1430.959991] softirqs last disabled
at (1985881): [<c012f74c>] __irq_exit_rcu+0x154/0x194
55ff8)
[ 1430.429173] 5fa0: [ 1430.970888] ---[ end trace 0000000000000000
]---
00000000 00000000 00000000 00000000
[ 1430.437373] 5fc0: 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 1430.445571] 5fe0: 00000000 00000000 00000000 00000000 00000013
00000000
[ 1430.452992] irq event stamp: 1985081
[ 1430.456613] hardirqs last enabled at (1985089): [<c019e8e0>]
console_unlock+0x134/0x164
[ 1430.464878] hardirqs last disabled a[ 1431.012846] ------------[ cut
here ]------------
t (1985110): [<c019e8cc>] console[ 1431.019064] WARNING: CPU: 0 PID: 9
at net/wireless/core.h:239 is_wiphy_all_set_reg_flag+0x134/0x144
[cfg80211]
_unlock+0x120/0x164
[ 1430.47309[ 1431.031956] Modules linked in: rtw88_8822cu rtw88_8822c
rtw88_usb rtw88_core mac80211 libarc4 cfg80211 btusb btrtl btintel btbcm
btmtk imx_sdma ip_tables x_tables
8] softirqs last enabled at (198[ 1431.049154] CPU: 0 PID: 9 Comm:
kworker/0:1 Tainted: G W 6.6.51-00141-ga1649b6f8ed6 #7
[ 1431.061186] Hardware name: Freescale i.MX6 SoloX (Device Tree)
[ 1431.067039] Workqueue: events disconnect_work [cfg80211]
[ 1431.073498] unwind_backtrace from show_stack+0x10/0x14
[ 1431.078776] show_stack from dump_stack_lvl+0x58/0x70
[ 1431.083865] dump_stack_lvl from __warn+0x70/0x1c0
[ 1431.088701] __warn from warn_slowpath_fmt+0x16c/0x294
[ 1431.093883] warn_slowpath_fmt from
is_wiphy_all_set_reg_flag+0x134/0x144 [cfg80211]
[ 1431.102757] is_wiphy_all_set_reg_flag [cfg80211] from
regulatory_hint_disconnect+0xc/0xdc [cfg80211]
[ 1431.114098] regulatory_hint_disconnect [cfg80211] from
disconnect_work+0x130/0x144 [cfg80211]
[ 1431.124831] disconnect_work [cfg80211] from
process_one_work+0x204/0x620
[ 1431.132724] process_one_work from worker_thread+0x1b0/0x474
[ 1431.138423] worker_thread from kthread+0x10c/0x12c
[ 1431.143335] kthread from ret_from_fork+0x14/0x24
[ 1431.148070] Exception stack(0xf0855fb0 to 0xf0855ff8)
[ 1431.153144] 5fa0: 00000000
00000000 00000000 00000000
[ 1431.161341] 5fc0: 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 1431.169539] 5fe0: 00000000 00000000 00000000 00000000 00000013
00000000
5108): [<c012f3b4>] handle_softir[ 1431.176768] irq event stamp: 1986265
qs+0x2ac/0x49c
[ 1430.481324] so[ 1431.182674] hardirqs last enabled at (1986275):
[<c019e8e0>] console_unlock+0x134/0x164
ftirqs last disabled at (1985097)[ 1431.193819] hardirqs last disabled
at (1986284): [<c019e8cc>] console_unlock+0x120/0x164
: [<c012f74c>] __irq_exit_rcu+0x1[ 1431.205066] softirqs last enabled
at (1986314): [<c012f3b4>] handle_softirqs+0x2ac/0x49c
54/0x194
[ 1430.489554] ---[ end[ 1431.215769] softirqs last disabled at
(1986293): [<c012f74c>] __irq_exit_rcu+0x154/0x194
trace 0000000000000000 ]---
[ 1[ 1431.226678] ---[ end trace 0000000000000000 ]---
430.529638] ------------[ cut here ]------------
[ 1430.536236] WARNING: CPU: 0 PID: 9 at net/wireless/core.h:239
disconnect_work+0xe4/0x144 [cfg80211]
[ 1430.548209] Modules linked in: rtw88_8822cu rtw88_8822c rtw88_usb
rtw88_core mac80211 libarc4 cfg80211 btusb btrtl btintel btbcm btmtk
imx_sdma ip_tables x_tables
[ 1430.565496] CPU: 0 PID: 9 Comm: kworker/0:1 Tainted: G W
6.6.51-00141-ga1649b6f8ed6 #7
[ 1430.577478] Hardware name: Freescale i.MX6 SoloX (Device Tree)
[ 1430.583331] Workqueue: events disconnect_work [cfg80211]
[ 1430.589790] unwind_backtrace from show_stack+0x10/0x14
[ 1430.595069] show_stack from dump_stack_lvl+0x58/0x70
[ 1430.600157] dump_stack_lvl from __warn+0x70/0x1c0
[ 1430.604994] __warn from warn_slowpath_fmt+0x16c/0x294
[ 1430.610177] warn_slowpath_fmt from disconnect_work+0xe4/0x144
[cfg80211]
[ 1430.618095] disconnect_work [cfg80211] from
process_one_work+0x204/0x620
[ 1430.625989] process_one_work from worker_thread+0x1b0/0x474
[ 1430.631687] worker_thread from kthread+0x10c/0x12c
[ 1430.636602] kthread from ret_from_fork+0x14/0x24
[ 1430.641335] Exception stack(0xf0855fb0 to 0xf0855ff8)
[ 1430.646412] 5fa0: 00000000
00000000 00000000 00000000
[ 1430.654610] 5fc0: 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 1430.662807] 5fe0: 00000000 00000000 00000000 00000000 00000013
00000000
[ 1430.670230] irq event stamp: 1985387
[ 1430.676059] hardirqs last enabled at (1985407): [<c019e8e0>]
console_unlock+0x134/0x164
[ 1430.686982] hardirqs last disabled at (1985416): [<c019e8cc>]
console_unlock+0x120/0x164
[ 1430.697999] softirqs last enabled at (1985404): [<c012f3b4>]
handle_softirqs+0x2ac/0x49c
[ 1430.709105] softirqs last disabled at (1985395): [<c012f74c>]
__irq_exit_rcu+0x154/0x194
[ 1430.720445] ---[ end trace 0000000000000000 ]---
[ 1430.757591] ------------[ cut here ]------------
[ 1430.763348] WARNING: CPU: 0 PID: 9 at net/wireless/core.h:231
is_wiphy_all_set_reg_flag+0xb4/0x144 [cfg80211]
[ 1430.776198] Modules linked in: rtw88_8822cu rtw88_8822c rtw88_usb
rtw88_core mac80211 libarc4 cfg80211 btusb btrtl btintel btbcm btmtk
imx_sdma ip_tables x_tables
[ 1430.793594] CPU: 0 PID: 9 Comm: kworker/0:1 Tainted: G W
6.6.51-00141-ga1649b6f8ed6 #7
[ 1430.805471] Hardware name: Freescale i.MX6 SoloX (Device Tree)
[ 1430.811324] Workqueue: events disconnect_work [cfg80211]
[ 1430.817785] unwind_backtrace from show_stack+0x10/0x14
[ 1430.823062] show_stack from dump_stack_lvl+0x58/0x70
[ 1430.828150] dump_stack_lvl from __warn+0x70/0x1c0
[ 1430.832986] __warn from warn_slowpath_fmt+0x16c/0x294
[ 1430.838167] warn_slowpath_fmt from
is_wiphy_all_set_reg_flag+0xb4/0x144 [cfg80211]
[ 1430.846957] is_wiphy_all_set_reg_flag [cfg80211] from
regulatory_hint_disconnect+0xc/0xdc [cfg80211]
[ 1430.858313] regulatory_hint_disconnect [cfg80211] from
disconnect_work+0x130/0x144 [cfg80211]
[ 1430.869050] disconnect_work [cfg80211] from
process_one_work+0x204/0x620
[ 1430.876943] process_one_work from worker_thread+0x1b0/0x474
[ 1430.882642] worker_thread from kthread+0x10c/0x12c
[ 1430.887554] kthread from ret_from_fork+0x14/0x24
[ 1430.892290] Exception stack(0xf0855fb0 to 0xf0855ff8)
[ 1430.897364] 5fa0: 00000000
00000000 00000000 00000000
[ 1430.905561] 5fc0: 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 1430.913760] 5fe0: 00000000 00000000 00000000 00000000 00000013
00000000
[ 1430.921569] irq event stamp: 1985873
[ 1430.927055] hardirqs last enabled at (1985911): [<c019e8e0>]
console_unlock+0x134/0x164
[ 1430.938018] hardirqs last disabled at (1985920): [<c019e8cc>]
console_unlock+0x120/0x164
[ 1430.949023] softirqs last enabled at (1985908): [<c012f3b4>]
handle_softirqs+0x2ac/0x49c
[ 1430.959991] softirqs last disabled at (1985881): [<c012f74c>]
__irq_exit_rcu+0x154/0x194
[ 1430.970888] ---[ end trace 0000000000000000 ]---
[ 1431.012846] ------------[ cut here ]------------
[ 1431.019064] WARNING: CPU: 0 PID: 9 at net/wireless/core.h:239
is_wiphy_all_set_reg_flag+0x134/0x144 [cfg80211]
[ 1431.031956] Modules linked in: rtw88_8822cu rtw88_8822c rtw88_usb
rtw88_core mac80211 libarc4 cfg80211 btusb btrtl btintel btbcm btmtk
imx_sdma ip_tables x_tables
[ 1431.049154] CPU: 0 PID: 9 Comm: kworker/0:1 Tainted: G W
6.6.51-00141-ga1649b6f8ed6 #7
[ 1431.061186] Hardware name: Freescale i.MX6 SoloX (Device Tree)
[ 1431.067039] Workqueue: events disconnect_work [cfg80211]
[ 1431.073498] unwind_backtrace from show_stack+0x10/0x14
[ 1431.078776] show_stack from dump_stack_lvl+0x58/0x70
[ 1431.083865] dump_stack_lvl from __warn+0x70/0x1c0
[ 1431.088701] __warn from warn_slowpath_fmt+0x16c/0x294
[ 1431.093883] warn_slowpath_fmt from
is_wiphy_all_set_reg_flag+0x134/0x144 [cfg80211]
[ 1431.102757] is_wiphy_all_set_reg_flag [cfg80211] from
regulatory_hint_disconnect+0xc/0xdc [cfg80211]
[ 1431.114098] regulatory_hint_disconnect [cfg80211] from
disconnect_work+0x130/0x144 [cfg80211]
[ 1431.124831] disconnect_work [cfg80211] from
process_one_work+0x204/0x620
[ 1431.132724] process_one_work from worker_thread+0x1b0/0x474
[ 1431.138423] worker_thread from kthread+0x10c/0x12c
[ 1431.143335] kthread from ret_from_fork+0x14/0x24
[ 1431.148070] Exception stack(0xf0855fb0 to 0xf0855ff8)
[ 1431.153144] 5fa0: 00000000
00000000 00000000 00000000
[ 1431.161341] 5fc0: 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 1431.169539] 5fe0: 00000000 00000000 00000000 00000000 00000013
00000000
[ 1431.176768] irq event stamp: 1986265
[ 1431.182674] hardirqs last enabled at (1986275): [<c019e8e0>]
console_unlock+0x134/0x164
[ 1431.193819] hardirqs last disabled at (1986284): [<c019e8cc>]
console_unlock+0x120/0x164
[ 1431.205066] softirqs last enabled at (1986314): [<c012f3b4>]
handle_softirqs+0x2ac/0x49c
[ 1431.215769] softirqs last disabled at (1986293): [<c012f74c>]
__irq_exit_rcu+0x154/0x194
[ 1431.226678] ---[ end trace 0000000000000000 ]---
```
^ permalink raw reply [flat|nested] 5+ messages in thread
* RE: rtw88: rtw8822cu: Kernel warning in cfg80211: disconnect_work at net/wireless/core.h:231 on CPU 0
2024-09-24 7:06 rtw88: rtw8822cu: Kernel warning in cfg80211: disconnect_work at net/wireless/core.h:231 on CPU 0 petter
@ 2024-09-25 3:30 ` Ping-Ke Shih
2024-09-25 6:19 ` Johannes Berg
0 siblings, 1 reply; 5+ messages in thread
From: Ping-Ke Shih @ 2024-09-25 3:30 UTC (permalink / raw)
To: petter@technux.se, linux-wireless@vger.kernel.org,
johannes@sipsolutions.net
Cc: rtl8821cerfe2@gmail.com, morrownr@gmail.com,
s.hauer@pengutronix.de
+ Johannes to comment wiphy_lock stuff
petter@technux.se <petter@technux.se> wrote:
> Hi,
>
> I have an issue with my 8822cu based usb device on >= 6.6 Linux with AP
> mode. Using latest changes AP-mode seems to work fairly good. But when
> enabling/disabling it I seems to always get below. It sometimes happens
> without using AP-mode also, when for example disconnection happens due
> to bad connection. Any ideas what might be causing this? Please also let
> me know if you want additional debugging logs etc.
>
> BR Petter
>
>
> ```
>
> [ 1429.886683] WARNING: CPU: 0 PID: 9 at net/wireless/core.h:231
> disconnect_work+0xb8/0x144 [cfg80211]
> [ 1429.898367] Modules linked in: rtw88_8822cu rtw88_8822c rtw88_usb
> rtw88_core mac80211 libarc4 cfg80211 btusb btrtl btintel btbcm btmtk
> imx_sdma ip_tables x_tables
> [ 1429.913362] CPU: 0 PID: 9 Comm: kworker/0:1 Not tainted
> 6.6.51-00141-ga1649b6f8ed6 #7
> [ 1429.921228] Hardware name: Freescale i.MX6 SoloX (Device Tree)
> [ 1429.927082] Workqueue: events disconnect_work [cfg80211]
> [ 1429.933556] unwind_backtrace from show_stack+0x10/0x14
> [ 1429.938833] show_stack from dump_stack_lvl+0x58/0x70
> [ 1429.943922] dump_stack_lvl from __warn+0x70/0x1c0
> [ 1429.948759] __warn from warn_slowpath_fmt+0x16c/0x294
> [ 1429.953939] warn_slowpath_fmt from disconnect_work+0xb8/0x144
> [cfg80211]
> [ 1429.961935] disconnect_work [cfg80211] from
I think the cause is picking commit 268f84a82753
("wifi: cfg80211: check wiphy mutex is held for wdev mutex"), and
cfg80211_is_all_idle() called by disconnect_work() uses wdev_lock()
but not wiphy_lock().
I'm not sure if we should simply revert the picked commit 268f84a82753
or should pick more commits.
By the way, I think the latest kernel will not throw these messages.
Could you try it?
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: rtw88: rtw8822cu: Kernel warning in cfg80211: disconnect_work at net/wireless/core.h:231 on CPU 0
2024-09-25 3:30 ` Ping-Ke Shih
@ 2024-09-25 6:19 ` Johannes Berg
2024-09-25 17:00 ` petter
0 siblings, 1 reply; 5+ messages in thread
From: Johannes Berg @ 2024-09-25 6:19 UTC (permalink / raw)
To: Ping-Ke Shih, petter@technux.se, linux-wireless@vger.kernel.org,
stable, Sasha Levin
Cc: rtl8821cerfe2@gmail.com, morrownr@gmail.com,
s.hauer@pengutronix.de
On Wed, 2024-09-25 at 03:30 +0000, Ping-Ke Shih wrote:
> I think the cause is picking commit 268f84a82753
> ("wifi: cfg80211: check wiphy mutex is held for wdev mutex"), and
> cfg80211_is_all_idle() called by disconnect_work() uses wdev_lock()
> but not wiphy_lock().
Yeah seems like a stable only problem (CC them), this is with kernel
version 6.6.51-00141-ga1649b6f8ed6 according to the warning.
> I'm not sure if we should simply revert the picked commit 268f84a82753
> or should pick more commits.
I don't see why it was picked up in the first place, so I guess I'd say
remove it. We won't want to redo the locking on a stable kernel, I'd
think.
> By the way, I think the latest kernel will not throw these messages.
Agree, that seems unlikely.
johannes
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: rtw88: rtw8822cu: Kernel warning in cfg80211: disconnect_work at net/wireless/core.h:231 on CPU 0
2024-09-25 6:19 ` Johannes Berg
@ 2024-09-25 17:00 ` petter
2024-09-26 0:35 ` Ping-Ke Shih
0 siblings, 1 reply; 5+ messages in thread
From: petter @ 2024-09-25 17:00 UTC (permalink / raw)
To: Johannes Berg, linux-wireless, Ping-Ke Shih
Cc: stable, Sasha Levin, rtl8821cerfe2, morrownr, s.hauer
On 2024-09-25 08:19, Johannes Berg wrote:
> On Wed, 2024-09-25 at 03:30 +0000, Ping-Ke Shih wrote:
>
>
>> I think the cause is picking commit 268f84a82753
>> ("wifi: cfg80211: check wiphy mutex is held for wdev mutex"), and
>> cfg80211_is_all_idle() called by disconnect_work() uses wdev_lock()
>> but not wiphy_lock().
>
> Yeah seems like a stable only problem (CC them), this is with kernel
> version 6.6.51-00141-ga1649b6f8ed6 according to the warning.
>
>> I'm not sure if we should simply revert the picked commit 268f84a82753
>> or should pick more commits.
>
> I don't see why it was picked up in the first place, so I guess I'd say
> remove it. We won't want to redo the locking on a stable kernel, I'd
> think.
>
Thanks! I tried reverting 268f84a82753, then as you guys expected the
issue is gone. So will continue to run with this commit reverted. But
would be good if we can decide
how to handle this for stable releases (such as 6.6) and see if we can
revert it their also in upcoming 6.6.53.
>> By the way, I think the latest kernel will not throw these messages.
>
> Agree, that seems unlikely.
>
> johannes
Sounds good. I will see if I can give it a try on later kernel also, to
verify. It will require some work to get my device up and running on a
later version so might take some time until I can give feedback. I was a
bit fooled that I got the issue when moving from 6.6.30 to 6.6.51 +
cherry-picking all latest rtw88 related changes for my LM842 (8822cu)
usb dongle, but great that you guys figured it out so quickly.
^ permalink raw reply [flat|nested] 5+ messages in thread
* RE: rtw88: rtw8822cu: Kernel warning in cfg80211: disconnect_work at net/wireless/core.h:231 on CPU 0
2024-09-25 17:00 ` petter
@ 2024-09-26 0:35 ` Ping-Ke Shih
0 siblings, 0 replies; 5+ messages in thread
From: Ping-Ke Shih @ 2024-09-26 0:35 UTC (permalink / raw)
To: petter@technux.se, Johannes Berg, linux-wireless@vger.kernel.org
Cc: stable@vger.kernel.org, Sasha Levin, rtl8821cerfe2@gmail.com,
morrownr@gmail.com, s.hauer@pengutronix.de
> Thanks! I tried reverting 268f84a82753, then as you guys expected the
> issue is gone. So will continue to run with this commit reverted. But
> would be good if we can decide
> how to handle this for stable releases (such as 6.6) and see if we can
> revert it their also in upcoming 6.6.53.
>
I sent a patch [1] to revert it.
[1] https://lore.kernel.org/stable/20240926003017.5427-1-pkshih@realtek.com/T/#u
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2024-09-26 0:35 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
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2024-09-24 7:06 rtw88: rtw8822cu: Kernel warning in cfg80211: disconnect_work at net/wireless/core.h:231 on CPU 0 petter
2024-09-25 3:30 ` Ping-Ke Shih
2024-09-25 6:19 ` Johannes Berg
2024-09-25 17:00 ` petter
2024-09-26 0:35 ` Ping-Ke Shih
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