From: Ben Greear <greearb@candelatech.com>
To: Lorenzo Bianconi <lorenzo@kernel.org>
Cc: linux-wireless <linux-wireless@vger.kernel.org>,
Felix Fietkau <nbd@nbd.name>
Subject: Re: mtk7996 lockdep & rcu splat in upstream kernel.
Date: Thu, 13 Nov 2025 17:16:10 -0800 [thread overview]
Message-ID: <026fd8fc-1871-af93-4622-8d33a6039e47@candelatech.com> (raw)
In-Reply-To: <aRZp7RYn0p34CVWA@lore-desk>
On 11/13/25 15:29, Lorenzo Bianconi wrote:
> On Nov 13, Lorenzo Bianconi wrote:
>>> Hello Lorenzo & Felix,
>>
>> Hi Ben,
>>
>>>
>>> With the hack to fix the crash I just posted, the kernel can get far enough to
>>> show this lockdep splat. I cannot find any code that grabs the wiphy mtx
>>> in this path, and yet if I try to add an explicit mutex_lock lock in the scan code, then
>>> I get kernel deadlocks. Maybe I'm just putting the lock in the wrong place.
>>>
>>> Any idea how this is supposed to work with regards to wiphy locking?
>>>
>>> And in addition, there is RCU splat immediately after the key.c related
>>> splat.
>>>
>>> 315 Nov 12 10:40:51 ct523c-a0af kernel: ------------[ cut here ]------------
>>> 316 Nov 12 10:40:51 ct523c-a0af kernel: WARNING: CPU: 1 PID: 115 at net/mac80211/key.c:1029 ieee80211_iter_keys+0xe4/0x1a0 [mac80211]
>>> 317 Nov 12 10:40:51 ct523c-a0af kernel: Modules linked in: vrf
>>> nf_conntrack_netlink nf_conntrack nfnetlink nf_defrag_ipv6 nf_defrag_ipv4
>>> 8021q garp mrp stp llc macvlan pktgen rpcrdma rdma_cm iw_cm ib_cm ib_core
>>> qrtr bnep snd_hda_codec_intelhdmi intel_rapl_msr snd_hda_codec_hdmi
>>> iTCO_wdt coretemp ee1004 intel_pmc_bxt iTCO_vendor_support intel_rapl_common
>>> snd_hda_codec_alc662 intel_uncore_frequency snd_hda_codec_realtek_lib
>>> intel_uncore_frequency_common snd_hda_codec_generic iwlmld mt7996e
>>> intel_tcc_cooling snd_hda_intel mt76_connac_lib mt76
>>> x86_pkg_temp_thermal snd_intel_dspcfg snd_hda_codec intel_powerclamp pcspkr
>>> snd_hda_core mac80211 intel_wmi_thunderbolt iwlwifi
>>> snd_hwdep btusb snd_seq btbcm snd_seq_device btmtk btrtl btintel joydev
>>> bluetooth snd_pcm cfg80211 i2c_i801 snd_timer i2c_smbus bfq snd
>>> i2c_mux soundcore intel_pmc_core mei_pxp mei_hdcp intel_pch_thermal
>>> pmt_telemetry pmt_discovery pmt_class intel_pmc_ssram_telemetry
>>> intel_vsec acpi_pad nfsd auth_rpcgss nfs_acl lockd grace nfs_localio
>>> sch_fq_codel sunrpc fuse zram raid1 dm_raid
>>> 318 Nov 12 10:40:51 ct523c-a0af kernel: raid456 async_raid6_recov
>>> async_memcpy async_pq async_xor xor async_tx raid6_pq i915 drm_buddy
>>> intel_gtt drm_client_lib drm_display_helper drm_kms_helper cec rc_core igb
>>> ttm intel_oc_wdt agpgart i2c_algo_bit ixgbe mdio libie_fwlog dca drm hwmon
>>> mei_wdt i2c_core video wmi [last unloaded: nfnetlink]
>>> 319 Nov 12 10:40:51 ct523c-a0af kernel: CPU: 1 UID: 0 PID: 115 Comm: kworker/u32:4 Tainted: G S 6.18.0-rc5+ #25 PREEMPT(full)
>>> 320 Nov 12 10:40:51 ct523c-a0af kernel: Tainted: [S]=CPU_OUT_OF_SPEC
>>> 321 Nov 12 10:40:51 ct523c-a0af kernel: Hardware name: Default string Default string/SKYBAY, BIOS 5.12 02/15/2023
>>> 322 Nov 12 10:40:51 ct523c-a0af kernel: Workqueue: phy2 mt76_scan_work [mt76]
>>> 323 Nov 12 10:40:51 ct523c-a0af kernel: RIP: 0010:ieee80211_iter_keys+0xe4/0x1a0 [mac80211]
>>> 324 Nov 12 10:40:51 ct523c-a0af kernel: Code: 4c 48 83 c4 10 5b 5d 41 5c
>>> 41 5d 41 5e 41 5f c3 48 8b 47 48 be ff ff ff ff 48 8d 78 68 e8 04 ec fe
>>> e0 85 c0 0f 85 49 ff ff ff <0f> 0b 4d 85 ed 0f 85 47 ff ff ff 4c 8b ab 90 1a
>>> 00 00 48 8d 83 90
>>> 325 Nov 12 10:40:51 ct523c-a0af kernel: RSP: 0018:ffffc90000f1fcb0 EFLAGS: 00010246
>>> 326 Nov 12 10:40:51 ct523c-a0af kernel: RAX: 0000000000000000 RBX: ffff888132710ee0 RCX: 0000000000000000
>>> 327 Nov 12 10:40:51 ct523c-a0af kernel: RDX: 0000000000000000 RSI: ffff888132710788 RDI: ffff8881158435c8
>>> 328 Nov 12 10:40:51 ct523c-a0af kernel: RBP: ffffffffa0de5400 R08: 0000000000000001 R09: 00000000f9936176
>>> 329 Nov 12 10:40:51 ct523c-a0af kernel: R10: 0000000000000001 R11: ffff8881158435a0 R12: ffffc90000f1fd00
>>> 330 Nov 12 10:40:51 ct523c-a0af kernel: R13: ffff88811642aa80 R14: ffff88813271afc8 R15: 000000000000043f
>>> 331 Nov 12 10:40:51 ct523c-a0af kernel: FS: 0000000000000000(0000) GS:ffff8884da4c6000(0000) knlGS:0000000000000000
>>> 332 Nov 12 10:40:51 ct523c-a0af kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>>> 333 Nov 12 10:40:51 ct523c-a0af kernel: CR2: 0000000000422bcc CR3: 0000000002c52004 CR4: 00000000003706f0
>>> 334 Nov 12 10:40:51 ct523c-a0af kernel: Call Trace:
>>> 335 Nov 12 10:40:51 ct523c-a0af kernel: <TASK>
>>> 336 Nov 12 10:40:51 ct523c-a0af kernel: ? lock_acquire+0xc2/0x2c0
>>> 337 Nov 12 10:40:51 ct523c-a0af kernel: mt7996_vif_link_remove+0x66/0x290 [mt7996e]
>>> 338 Nov 12 10:40:51 ct523c-a0af kernel: mt76_put_vif_phy_link+0x41/0x50 [mt76]
>>> 339 Nov 12 10:40:51 ct523c-a0af kernel: mt76_scan_complete+0x77/0x100 [mt76]
>>> 340 Nov 12 10:40:51 ct523c-a0af kernel: mt76_scan_work+0x30a/0x440 [mt76]
>>> 341 Nov 12 10:40:51 ct523c-a0af kernel: ? process_one_work+0x1e5/0x6d0
>>> 342 Nov 12 10:40:51 ct523c-a0af kernel: process_one_work+0x221/0x6d0
>>> 343 Nov 12 10:40:51 ct523c-a0af kernel: worker_thread+0x19a/0x340
>>> 344 Nov 12 10:40:51 ct523c-a0af kernel: ? rescuer_thread+0x450/0x450
>>> 345 Nov 12 10:40:51 ct523c-a0af kernel: kthread+0x108/0x220
>>> 346 Nov 12 10:40:51 ct523c-a0af kernel: ? kthreads_online_cpu+0x110/0x110
>>> 347 Nov 12 10:40:51 ct523c-a0af kernel: ret_from_fork+0x1c6/0x220
>>> 348 Nov 12 10:40:51 ct523c-a0af kernel: ? kthreads_online_cpu+0x110/0x110
>>> 349 Nov 12 10:40:51 ct523c-a0af kernel: ret_from_fork_asm+0x11/0x20
>>> 350 Nov 12 10:40:51 ct523c-a0af kernel: </TASK>
>>> 351 Nov 12 10:40:51 ct523c-a0af kernel: irq event stamp: 27647
>>> 352 Nov 12 10:40:51 ct523c-a0af kernel: hardirqs last enabled at (27653): [<ffffffff813d447e>] __up_console_sem+0x5e/0x70
>>> 353 Nov 12 10:40:51 ct523c-a0af kernel: hardirqs last disabled at (27658): [<ffffffff813d4463>] __up_console_sem+0x43/0x70
>>> 354 Nov 12 10:40:51 ct523c-a0af kernel: softirqs last enabled at (26676): [<ffffffff81f2ad9c>] napi_pp_put_page+0xac/0xd0
>>> 355 Nov 12 10:40:51 ct523c-a0af kernel: softirqs last disabled at (26674): [<ffffffff81fa3230>] page_pool_put_unrefed_netmem+0x290/0x3d0
>>> 356 Nov 12 10:40:51 ct523c-a0af kernel: ---[ end trace 0000000000000000 ]---
>>> 357 Nov 12 10:40:51 ct523c-a0af kernel:
>>> 358 Nov 12 10:40:51 ct523c-a0af kernel: =============================
>>> 359 Nov 12 10:40:51 ct523c-a0af kernel: WARNING: suspicious RCU usage
>>> 360 Nov 12 10:40:51 ct523c-a0af kernel: 6.18.0-rc5+ #25 Tainted: G S W
>>> 361 Nov 12 10:40:51 ct523c-a0af kernel: -----------------------------
>>> 362 Nov 12 10:40:51 ct523c-a0af kernel: drivers/net/wireless/mediatek/mt76/mt7996/main.c:415 suspicious rcu_dereference_check() usage!
>>> 363 Nov 12 10:40:51 ct523c-a0af kernel:
>>> 364 other info that might help us debug this:
>>> 365 Nov 12 10:40:51 ct523c-a0af kernel:
>>> 366 rcu_scheduler_active = 2, debug_locks = 1
>>> 367 Nov 12 10:40:51 ct523c-a0af kernel: 2 locks held by kworker/u32:4/115:
>>> 368 Nov 12 10:40:51 ct523c-a0af kernel: #0: ffff888118ebdd48 ((wq_completion)phy2){+.+.}-{0:0}, at: process_one_work+0x41c/0x6d0
>>> 369 Nov 12 10:40:51 ct523c-a0af kernel: #1: ffffc90000f1fe38
>>> ((work_completion)(&(&dev->scan_work)->work)){+.+.}-{0:0}, at:
>>> process_one_work+ 0x1e5/0x6d0
>>> 370 Nov 12 10:40:51 ct523c-a0af kernel:
>>> 371 stack backtrace:
>>> 372 Nov 12 10:40:51 ct523c-a0af kernel: CPU: 1 UID: 0 PID: 115 Comm: kworker/u32:4 Tainted: G S W 6.18.0-rc5+ #25 PREEMPT(full)
>>> 373 Nov 12 10:40:51 ct523c-a0af kernel: Tainted: [S]=CPU_OUT_OF_SPEC, [W]=WARN
>>> 374 Nov 12 10:40:51 ct523c-a0af kernel: Hardware name: Default string Default string/SKYBAY, BIOS 5.12 02/15/2023
>>> 375 Nov 12 10:40:51 ct523c-a0af kernel: Workqueue: phy2 mt76_scan_work [mt76]
>>> 376 Nov 12 10:40:51 ct523c-a0af kernel: Call Trace:
>>> 377 Nov 12 10:40:51 ct523c-a0af kernel: <TASK>
>>> 378 Nov 12 10:40:51 ct523c-a0af kernel: dump_stack_lvl+0x8d/0xa0
>>> 379 Nov 12 10:40:51 ct523c-a0af kernel: lockdep_rcu_suspicious+0x146/0x1a0
>>> 380 Nov 12 10:40:51 ct523c-a0af kernel: mt7996_vif_link_remove+0x279/0x290 [mt7996e]
>>> 381 Nov 12 10:40:51 ct523c-a0af kernel: mt76_put_vif_phy_link+0x41/0x50 [mt76]
>>> 382 Nov 12 10:40:51 ct523c-a0af kernel: mt76_scan_complete+0x77/0x100 [mt76]
>>> 383 Nov 12 10:40:51 ct523c-a0af kernel: mt76_scan_work+0x30a/0x440 [mt76]
>>> 384 Nov 12 10:40:51 ct523c-a0af kernel: ? process_one_work+0x1e5/0x6d0
>>> 385 Nov 12 10:40:51 ct523c-a0af kernel: process_one_work+0x221/0x6d0
>>> 386 Nov 12 10:40:51 ct523c-a0af kernel: worker_thread+0x19a/0x340
>>> 387 Nov 12 10:40:51 ct523c-a0af kernel: ? rescuer_thread+0x450/0x450
>>> 388 Nov 12 10:40:51 ct523c-a0af kernel: kthread+0x108/0x220
>>> 389 Nov 12 10:40:51 ct523c-a0af kernel: ? kthreads_online_cpu+0x110/0x110
>>> 390 Nov 12 10:40:51 ct523c-a0af kernel: ret_from_fork+0x1c6/0x220
>>> 391 Nov 12 10:40:51 ct523c-a0af kernel: ? kthreads_online_cpu+0x110/0x110
>>> 392 Nov 12 10:40:51 ct523c-a0af kernel: ret_from_fork_asm+0x11/0x20
>>> 393 Nov 12 10:40:51 ct523c-a0af kernel: </TASK>
>>> 394 Nov 12 10:40:54 ct523c-a0af kernel: ixgbe 0000:01:00.0 eth2: NIC Link is Up 10 Gbps, Flow Control: RX/TX
>>> 395 Nov 12 10:40:54 ct523c-a0af kernel: ------------[ cut here ]------------
>>>
>>> Thanks,
>>> Ben
>>
>> I think the problem here is mt76_put_vif_phy_link() runs without grabbing
>> wiphy mutex in mt76_scan_complete() so we cant' run for_each_vif_active_link().
>> I will work on a fix.
>>
>> Regards,
>> Lorenzo
>
> Hi Ben,
>
> Can you please try the following patch?
>
> Regards,
> Lorenzo
>
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/main.c b/drivers/net/wireless/mediatek/mt76/mt7996/main.c
> index d30fcedf121f..f63053068e54 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7996/main.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7996/main.c
> @@ -370,7 +370,8 @@ int mt7996_vif_link_add(struct mt76_phy *mphy, struct ieee80211_vif *vif,
>
> ieee80211_iter_keys(mphy->hw, vif, mt7996_key_iter, &it);
>
> - if (mvif->mt76.deflink_id == IEEE80211_LINK_UNSPECIFIED)
> + if (mvif->mt76.deflink_id == IEEE80211_LINK_UNSPECIFIED &&
> + !mlink->offchannel)
> mvif->mt76.deflink_id = link_conf->link_id;
>
> return 0;
> @@ -401,7 +402,8 @@ void mt7996_vif_link_remove(struct mt76_phy *mphy, struct ieee80211_vif *vif,
>
> rcu_assign_pointer(dev->mt76.wcid[idx], NULL);
>
> - if (mvif->mt76.deflink_id == link_conf->link_id) {
> + if (mvif->mt76.deflink_id == link_conf->link_id &&
> + !mlink->offchannel) {
> struct ieee80211_bss_conf *iter;
> unsigned int link_id;
Thanks for the patch.
I am still seeing these splats about the key.c logic being called w/out lock, and also
a RCU warning farther below. This was bringing up a single STA, which did in fact associate
and get DHCP address. This is a different RCU splat I think. Possibly first one is fixed.
Previous test was bringing up additional station vdevs though, so this test below was more
gentle.
Nov 13 16:14:37 ct523c-a0af kernel: ------------[ cut here ]------------
Nov 13 16:14:37 ct523c-a0af kernel: WARNING: CPU: 5 PID: 70 at net/mac80211/key.c:1029 ieee80211_iter_keys+0xe4/0x1a0 [mac80211]
Nov 13 16:14:37 ct523c-a0af kernel: Modules linked in: vrf nf_conntrack_netlink nf_conntrack nfnetlink nf_defrag_ipv6 nf_defrag_ipv4 8021q garp mrp stp llc
macvlan pktgen rpcrdma rdma_cm iw_cm ib_cm ib_core qrtr bnep intel_rapl_msr iTCO_wdt coretemp ee1004 intel_rapl_common intel_pmc_bxt iTCO_vendor_support
snd_hda_codec_intelhdmi intel_uncore_frequency intel_uncore_frequency_common snd_hda_codec_hdmi snd_hda_codec_alc662 snd_hda_codec_realtek_lib
snd_hda_codec_generic snd_hda_intel mt7996e snd_intel_dspcfg intel_tcc_cooling mt76_connac_lib x86_pkg_temp_thermal snd_hda_codec btusb intel_powerclamp iwlmld
mt76 btbcm snd_hda_core btmtk pcspkr intel_wmi_thunderbolt btrtl snd_hwdep btintel snd_seq mac80211 iwlwifi snd_seq_device bluetooth joydev snd_pcm i2c_i801
cfg80211 i2c_smbus bfq i2c_mux snd_timer mei_hdcp snd mei_pxp soundcore intel_pch_thermal intel_pmc_core pmt_telemetry pmt_discovery pmt_class
intel_pmc_ssram_telemetry intel_vsec acpi_pad nfsd auth_rpcgss nfs_acl lockd grace nfs_localio sch_fq_codel sunrpc fuse zram raid1 dm_raid
Nov 13 16:14:37 ct523c-a0af kernel: raid456 async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq i915 drm_buddy intel_gtt drm_client_lib
drm_display_helper drm_kms_helper cec rc_core igb ttm intel_oc_wdt i2c_algo_bit agpgart ixgbe mdio libie_fwlog dca drm hwmon mei_wdt i2c_core video wmi [last
unloaded: nfnetlink]
Nov 13 16:14:37 ct523c-a0af kernel: CPU: 5 UID: 0 PID: 70 Comm: kworker/u32:1 Tainted: G S W 6.18.0-rc5+ #26 PREEMPT(full)
Nov 13 16:14:37 ct523c-a0af kernel: Tainted: [S]=CPU_OUT_OF_SPEC, [W]=WARN
Nov 13 16:14:37 ct523c-a0af kernel: Hardware name: Default string Default string/SKYBAY, BIOS 5.12 02/15/2023
Nov 13 16:14:37 ct523c-a0af kernel: Workqueue: phy3 mt76_scan_work [mt76]
Nov 13 16:14:37 ct523c-a0af kernel: RIP: 0010:ieee80211_iter_keys+0xe4/0x1a0 [mac80211]
Nov 13 16:14:37 ct523c-a0af kernel: Code: 4c 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 8b 47 48 be ff ff ff ff 48 8d 78 68 e8 b4 eb fe e0 85 c0 0f 85 49
ff ff ff <0f> 0b 4d 85 ed 0f 85 47 ff ff ff 4c 8b ab 90 1a 00 00 48 8d 83 90
Nov 13 16:14:37 ct523c-a0af kernel: RSP: 0018:ffffc900002e7cb0 EFLAGS: 00010246
Nov 13 16:14:37 ct523c-a0af kernel: RAX: 0000000000000000 RBX: ffff88812d460ee0 RCX: 0000000000000000
Nov 13 16:14:37 ct523c-a0af kernel: RDX: 0000000000000000 RSI: ffff88812d460788 RDI: ffff8881113235c8
Nov 13 16:14:37 ct523c-a0af kernel: RBP: ffffffffa12da400 R08: 0000000000000001 R09: 0000000000000000
Nov 13 16:14:37 ct523c-a0af kernel: R10: 0000000000000001 R11: 0000000000000000 R12: ffffc900002e7d00
Nov 13 16:14:37 ct523c-a0af kernel: R13: ffff88812e4eaa80 R14: ffff88812d46afc8 R15: ffff888084863038
Nov 13 16:14:37 ct523c-a0af kernel: FS: 0000000000000000(0000) GS:ffff8884da5c6000(0000) knlGS:0000000000000000
Nov 13 16:14:37 ct523c-a0af kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Nov 13 16:14:37 ct523c-a0af kernel: CR2: 00005564731420a8 CR3: 0000000002c52001 CR4: 00000000003706f0
Nov 13 16:14:37 ct523c-a0af kernel: Call Trace:
Nov 13 16:14:37 ct523c-a0af kernel: <TASK>
Nov 13 16:14:37 ct523c-a0af kernel: mt7996_vif_link_remove+0x64/0x2a0 [mt7996e]
Nov 13 16:14:37 ct523c-a0af kernel: mt76_put_vif_phy_link+0x41/0x50 [mt76]
Nov 13 16:14:37 ct523c-a0af kernel: mt76_scan_complete+0x77/0x100 [mt76]
Nov 13 16:14:37 ct523c-a0af kernel: mt76_scan_work+0x2eb/0x3f0 [mt76]
Nov 13 16:14:37 ct523c-a0af kernel: ? process_one_work+0x1e5/0x6d0
Nov 13 16:14:37 ct523c-a0af kernel: process_one_work+0x221/0x6d0
Nov 13 16:14:37 ct523c-a0af kernel: worker_thread+0x19a/0x340
Nov 13 16:14:37 ct523c-a0af kernel: ? rescuer_thread+0x450/0x450
Nov 13 16:14:37 ct523c-a0af kernel: kthread+0x108/0x220
Nov 13 16:14:37 ct523c-a0af kernel: ? kthreads_online_cpu+0x110/0x110
Nov 13 16:14:37 ct523c-a0af kernel: ret_from_fork+0x1c6/0x220
Nov 13 16:14:37 ct523c-a0af kernel: ? kthreads_online_cpu+0x110/0x110
Nov 13 16:14:37 ct523c-a0af kernel: ret_from_fork_asm+0x11/0x20
Nov 13 16:14:37 ct523c-a0af kernel: </TASK>
Nov 13 16:14:37 ct523c-a0af kernel: irq event stamp: 153569
Nov 13 16:14:37 ct523c-a0af kernel: hardirqs last enabled at (153575): [<ffffffff813d447e>] __up_console_sem+0x5e/0x70
Nov 13 16:14:37 ct523c-a0af kernel: hardirqs last disabled at (153580): [<ffffffff813d4463>] __up_console_sem+0x43/0x70
Nov 13 16:14:37 ct523c-a0af kernel: softirqs last enabled at (152614): [<ffffffff81335ae5>] __irq_exit_rcu+0xa5/0xd0
Nov 13 16:14:37 ct523c-a0af kernel: softirqs last disabled at (152609): [<ffffffff81335ae5>] __irq_exit_rcu+0xa5/0xd0
Nov 13 16:14:37 ct523c-a0af kernel: ---[ end trace 0000000000000000 ]---
[ 107.081055] =============================
[ 107.081056] WARNING: suspicious RCU usage
[ 107.081058] 6.18.0-rc5+ #26 Tainted: G S W
[ 107.081061] -----------------------------
[ 107.081062] drivers/net/wireless/mediatek/mt76/mt7996/main.c:1180 suspicious rcu_dereference_protected() usage!
[ 107.081064]
other info that might help us debug this:
[ 107.081065]
rcu_scheduler_active = 2, debug_locks = 1
[ 107.081067] 3 locks held by kworker/u32:2/72:
[ 107.081069] #0: ffff888110070948 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x41c/0x6d0
[ 107.081079] #1: ffffc900002f7e38 ((work_completion)(&rdev->wiphy_work)){+.+.}-{0:0}, at: process_one_work+0x1e5/0x6d0
[ 107.081086] #2: ffff88812fdd0788 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: cfg80211_wiphy_work+0x41/0x220 [cfg80211]
[ 107.081185]
stack backtrace:
[ 107.081188] CPU: 5 UID: 0 PID: 72 Comm: kworker/u32:2 Tainted: G S W 6.18.0-rc5+ #26 PREEMPT(full)
[ 107.081190] Tainted: [S]=CPU_OUT_OF_SPEC, [W]=WARN
[ 107.081191] Hardware name: Default string Default string/SKYBAY, BIOS 5.12 02/15/2023
[ 107.081192] Workqueue: events_unbound cfg80211_wiphy_work [cfg80211]
[ 107.081226] Call Trace:
[ 107.081227] <TASK>
[ 107.081229] dump_stack_lvl+0x8d/0xa0
[ 107.081234] lockdep_rcu_suspicious+0x146/0x1a0
[ 107.081240] mt7996_sta_state+0x3c5/0x5a0 [mt7996e]
[ 107.081256] drv_sta_state+0x11f/0x880 [mac80211]
[ 107.081375] _sta_info_move_state+0x32a/0x6a0 [mac80211]
[ 107.081425] ieee80211_rx_mgmt_assoc_resp+0x835/0x15f0 [mac80211]
[ 107.081505] ? lock_is_held_type+0xa5/0x110
[ 107.081512] ieee80211_iface_work+0x4d1/0x5f0 [mac80211]
[ 107.081565] cfg80211_wiphy_work+0xe3/0x220 [cfg80211]
[ 107.081603] process_one_work+0x221/0x6d0
[ 107.081611] worker_thread+0x19a/0x340
[ 107.081613] ? rescuer_thread+0x450/0x450
[ 107.081615] kthread+0x108/0x220
[ 107.081620] ? kthreads_online_cpu+0x110/0x110
[ 107.081623] ret_from_fork+0x1c6/0x220
[ 107.081626] ? kthreads_online_cpu+0x110/0x110
[ 107.081628] ret_from_fork_asm+0x11/0x20
[ 107.081641] </TASK>
Thanks,
Ben
--
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
prev parent reply other threads:[~2025-11-14 1:16 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-12 19:03 mtk7996 lockdep & rcu splat in upstream kernel Ben Greear
2025-11-13 8:58 ` Lorenzo Bianconi
2025-11-13 23:29 ` Lorenzo Bianconi
2025-11-14 1:16 ` Ben Greear [this message]
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--in-reply-to=026fd8fc-1871-af93-4622-8d33a6039e47@candelatech.com \
--to=greearb@candelatech.com \
--cc=linux-wireless@vger.kernel.org \
--cc=lorenzo@kernel.org \
--cc=nbd@nbd.name \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
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via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
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