Hi Kalle,
I am afraid you hit same issue of below patch, they looks similar, but I
am not sure they are the same root cause.
https://patchwork.kernel.org/project/linux-wireless/patch/1608617166-17180-1-git-send-email-wgong@xxxxxxxxxxxxxx/
[RFC] ath11k: fix blocked for more than 120 seconds caused by reg update
On 11/22/2021 8:28 PM, Kalle Valo wrote:
Wen Gong <quic_wgong@xxxxxxxxxxx> writes:
v2:
1. rebased to latest ath.git master ath-202111170737
2. add "ath11k: add configure country code for QCA6390 and WCN6855", it is needed for
patch "ath11k: add 11d scan offload support"
Wen Gong (2):
ath11k: add configure country code for QCA6390 and WCN6855
ath11k: add 11d scan offload support
drivers/net/wireless/ath/ath11k/core.c | 30 +++++
drivers/net/wireless/ath/ath11k/core.h | 9 ++
drivers/net/wireless/ath/ath11k/mac.c | 162 ++++++++++++++++++++++++-
drivers/net/wireless/ath/ath11k/mac.h | 7 ++
drivers/net/wireless/ath/ath11k/pci.c | 1 +
drivers/net/wireless/ath/ath11k/reg.c | 15 +++
drivers/net/wireless/ath/ath11k/wmi.c | 145 ++++++++++++++++++++++
drivers/net/wireless/ath/ath11k/wmi.h | 39 ++++++
8 files changed, 407 insertions(+), 1 deletion(-)
I suspect this patch adds a new lockdep warning on my NUC testbox.
Tag: ath-202111221111
[ 87.034989] ath11k_pci 0000:06:00.0: MSI vectors: 32
[ 87.035059] ath11k_pci 0000:06:00.0: qca6390 hw2.0
[ 87.684032] ath11k_pci 0000:06:00.0: chip_id 0x0 chip_family 0xb board_id 0xff soc_id 0xffffffff
[ 87.684277] ath11k_pci 0000:06:00.0: fw_version 0x101c06cc fw_build_timestamp 2020-06-24 19:50 fw_build
[...]
[ 527.024672] ======================================================
[ 527.024708] WARNING: possible circular locking dependency detected
[ 527.024746] 5.16.0-rc1-wt-ath+ #528 Not tainted
[ 527.024785] ------------------------------------------------------
[ 527.024819] wpa_supplicant/2309 is trying to acquire lock:
[ 527.024857] ffff88811fe6f148 ((wq_completion)phy0){+.+.}-{0:0}, at: flush_workqueue+0xd9/0x1340
[ 527.024901]
but task is already holding lock:
[ 527.024934] ffff8881563b07d0 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: ieee80211_stop+0xa0/0x680 [mac80211]
[ 527.025023]
which lock already depends on the new lock.
[ 527.025058]
the existing dependency chain (in reverse order) is:
[ 527.025091]
-> #3 (&rdev->wiphy.mtx){+.+.}-{3:3}:
[ 527.025129] __lock_acquire+0xb72/0x1870
[ 527.025166] lock_acquire.part.0+0x117/0x340
[ 527.025219] __mutex_lock+0x15a/0x1610
[ 527.025267] reg_process_self_managed_hints+0x5e/0x130 [cfg80211]
[ 527.025343] wiphy_register+0x1607/0x2640 [cfg80211]
[ 527.025409] ieee80211_register_hw+0x17d5/0x3150 [mac80211]
[ 527.025481] __ath11k_mac_register+0x1944/0x25c0 [ath11k]
[ 527.025530] ath11k_mac_register+0x2ee/0x610 [ath11k]
[ 527.025578] ath11k_core_qmi_firmware_ready.part.0+0x9e/0x2b0 [ath11k]
[ 527.025626] ath11k_qmi_driver_event_work+0x49c/0xa80 [ath11k]
[ 527.025674] process_one_work+0x866/0x1490
[ 527.026142] worker_thread+0x596/0x1010
[ 527.026180] kthread+0x35d/0x420
[ 527.026247] ret_from_fork+0x22/0x30
[ 527.026282]
-> #2 (rtnl_mutex){+.+.}-{3:3}:
[ 527.026319] __lock_acquire+0xb72/0x1870
[ 527.026355] lock_acquire.part.0+0x117/0x340
[ 527.026388] __mutex_lock+0x15a/0x1610
[ 527.026423] ath11k_regd_update+0x1ce/0x580 [ath11k]
[ 527.026471] process_one_work+0x866/0x1490
[ 527.026505] worker_thread+0x596/0x1010
[ 527.026540] kthread+0x35d/0x420
[ 527.026574] ret_from_fork+0x22/0x30
[ 527.026608]
-> #1 ((work_completion)(&ar->regd_update_work)){+.+.}-{0:0}:
[ 527.026645] __lock_acquire+0xb72/0x1870
[ 527.026679] lock_acquire.part.0+0x117/0x340
[ 527.026714] process_one_work+0x7f6/0x1490
[ 527.026748] worker_thread+0x596/0x1010
[ 527.026782] kthread+0x35d/0x420
[ 527.026814] ret_from_fork+0x22/0x30
[ 527.026848]
-> #0 ((wq_completion)phy0){+.+.}-{0:0}:
[ 527.026883] check_prev_add+0x15e/0x20f0
[ 527.026917] validate_chain+0xf7f/0x1b30
[ 527.026957] __lock_acquire+0xb72/0x1870
[ 527.026992] lock_acquire.part.0+0x117/0x340
[ 527.027026] flush_workqueue+0xfc/0x1340
[ 527.027061] ieee80211_stop_device+0x50/0x60 [mac80211]
[ 527.027142] ieee80211_do_stop+0x11cf/0x1a20 [mac80211]
[ 527.027248] ieee80211_stop+0xad/0x680 [mac80211]
[ 527.027322] __dev_close_many+0x18f/0x2a0
[ 527.027357] __dev_change_flags+0x264/0x680
[ 527.027391] dev_change_flags+0x86/0x150
[ 527.027425] devinet_ioctl+0xfbb/0x18f0
[ 527.027460] inet_ioctl+0x2ae/0x2f0
[ 527.027493] sock_do_ioctl+0xd5/0x1d0
[ 527.027527] sock_ioctl+0x1c1/0x570
[ 527.027561] __x64_sys_ioctl+0x122/0x190
[ 527.027598] do_syscall_64+0x3b/0x90
[ 527.027631] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 527.027666]
other info that might help us debug this:
[ 527.027700] Chain exists of:
(wq_completion)phy0 --> rtnl_mutex --> &rdev->wiphy.mtx
[ 527.027739] Possible unsafe locking scenario:
[ 527.027772] CPU0 CPU1
[ 527.027808] ---- ----
[ 527.027841] lock(&rdev->wiphy.mtx);
[ 527.027880] lock(rtnl_mutex);
[ 527.027916] lock(&rdev->wiphy.mtx);
[ 527.027950] lock((wq_completion)phy0);
[ 527.027984]
*** DEADLOCK ***
[ 527.028017] 2 locks held by wpa_supplicant/2309:
[ 527.028051] #0: ffffffff8ff3cb70 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x182/0x18f0
[ 527.029006] #1: ffff8881563b07d0 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: ieee80211_stop+0xa0/0x680 [mac80211]
[ 527.029087]
stack backtrace:
[ 527.029121] CPU: 6 PID: 2309 Comm: wpa_supplicant Kdump: loaded Not tainted 5.16.0-rc1-wt-ath+ #528
[ 527.029158] Hardware name: Intel(R) Client Systems NUC8i7HVK/NUC8i7HVB, BIOS HNKBLi70.86A.0067.2021.0528.1339 05/28/2021
[ 527.029211] Call Trace:
[ 527.029246] <TASK>
[ 527.029292] dump_stack_lvl+0x57/0x7d
[ 527.029328] check_noncircular+0x26a/0x310
[ 527.029363] ? print_circular_bug+0x450/0x450
[ 527.029403] ? __kernel_text_address+0x9/0x30
[ 527.029439] ? alloc_chain_hlocks+0x1de/0x530
[ 527.029474] check_prev_add+0x15e/0x20f0
[ 527.029511] ? __lock_acquire+0xb72/0x1870
[ 527.029547] validate_chain+0xf7f/0x1b30
[ 527.029583] ? check_prev_add+0x20f0/0x20f0
[ 527.029618] ? __lock_release+0x4bd/0x9f0
[ 527.029655] __lock_acquire+0xb72/0x1870
[ 527.029691] lock_acquire.part.0+0x117/0x340
[ 527.029727] ? flush_workqueue+0xd9/0x1340
[ 527.029763] ? rcu_read_unlock+0x40/0x40
[ 527.029799] ? rcu_read_lock_sched_held+0x3a/0x70
[ 527.029833] ? lock_acquire+0x1a8/0x210
[ 527.029868] ? flush_workqueue+0xd9/0x1340
[ 527.029903] flush_workqueue+0xfc/0x1340
[ 527.029936] ? flush_workqueue+0xd9/0x1340
[ 527.029970] ? mark_held_locks+0xa5/0xe0
[ 527.030009] ? lockdep_hardirqs_on_prepare.part.0+0x18c/0x370
[ 527.030044] ? check_flush_dependency+0x350/0x350
[ 527.030082] ? ath11k_mac_op_remove_interface+0x58b/0xa20 [ath11k]
[ 527.030131] ? ieee80211_stop_device+0x50/0x60 [mac80211]
[ 527.030241] ieee80211_stop_device+0x50/0x60 [mac80211]
[ 527.030321] ieee80211_do_stop+0x11cf/0x1a20 [mac80211]
[ 527.030397] ? mutex_lock_io_nested+0x1470/0x1470
[ 527.030436] ? lock_downgrade+0x130/0x130
[ 527.030473] ? ieee80211_adjust_monitor_flags+0x1f0/0x1f0 [mac80211]
[ 527.030547] ? mark_held_locks+0xa5/0xe0
[ 527.030583] ? lockdep_hardirqs_on_prepare.part.0+0x18c/0x370
[ 527.030618] ? __local_bh_enable_ip+0xa0/0x110
[ 527.030654] ieee80211_stop+0xad/0x680 [mac80211]
[ 527.030728] __dev_close_many+0x18f/0x2a0
[ 527.030764] ? unregister_netdevice_notifier+0x150/0x150
[ 527.030799] ? lockdep_hardirqs_on_prepare.part.0+0x18c/0x370
[ 527.030834] ? __local_bh_enable_ip+0xa0/0x110
[ 527.030869] __dev_change_flags+0x264/0x680
[ 527.030903] ? dev_set_allmulti+0x10/0x10
[ 527.030940] dev_change_flags+0x86/0x150
[ 527.030976] devinet_ioctl+0xfbb/0x18f0
[ 527.031011] inet_ioctl+0x2ae/0x2f0
[ 527.031048] ? inet_dgram_connect+0x220/0x220
[ 527.031087] ? lock_downgrade+0x130/0x130
[ 527.032054] ? __might_fault+0xb3/0x160
[ 527.032090] ? __might_fault+0xb3/0x160
[ 527.032124] ? _copy_to_user+0x94/0xb0
[ 527.032160] sock_do_ioctl+0xd5/0x1d0
[ 527.032216] ? put_user_ifreq+0x70/0x70
[ 527.032279] ? vfs_fileattr_set+0x930/0x930
[ 527.032314] ? selinux_file_ioctl+0x375/0x520
[ 527.032350] sock_ioctl+0x1c1/0x570
[ 527.032385] ? br_ioctl_call+0x90/0x90
[ 527.032420] ? __ia32_sys_sendmmsg+0xeb/0xf0
[ 527.032454] ? __sys_recvmsg_sock+0x10/0x10
[ 527.032492] __x64_sys_ioctl+0x122/0x190
[ 527.032527] do_syscall_64+0x3b/0x90
[ 527.032562] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 527.032597] RIP: 0033:0x7fd37113850b
[ 527.032636] Code: 0f 1e fa 48 8b 05 85 39 0d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 55 39 0d 00 f7 d8 64 89 01 48
[ 527.032679] RSP: 002b:00007ffd0174b258 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 527.032718] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd37113850b
[ 527.032755] RDX: 00007ffd0174b260 RSI: 0000000000008914 RDI: 0000000000000008
[ 527.032790] RBP: 0000000000000008 R08: 0000000000000007 R09: 00007fd37120cb80
[ 527.032824] R10: 0000000000000007 R11: 0000000000000246 R12: 0000000000000000
[ 527.032857] R13: 00005641e16bfa70 R14: 00007ffd0174b260 R15: 00005641e16b4840
[ 527.032894] </TASK>
