On 07.04.2021 09:56, Johannes Berg wrote:
> On Wed, 2021-04-07 at 09:55 +0200, Johannes Berg wrote:
>> On Wed, 2021-04-07 at 09:51 +0200, Jiri Kosina wrote:
>>> On Wed, 7 Apr 2021, Heiner Kallweit wrote:
>>>
>>>> Same fix as in 2800aadc18a6 ("iwlwifi: Fix softirq/hardirq disabling in
>>>> iwl_pcie_enqueue_hcmd()") is needed for iwl_pcie_gen2_enqueue_hcmd.
>>>> I get the same lockdep warning on AX210.
>>>
>>> Makes sense, it's being called from exactly the same contexts.
>>
>> I'm guessing nobody saw this before because the LEDs stuff is not
>> supported/used on newer devices :)
>
> Eh, wait, Heiner said he sees the same warning? With LEDs? I was pretty
> sure that's not supported by the later firmware, but maybe some other
> path? Anyway this fix seems right.
>
> johannes
>
For your reference here the warning I got.
[ 27.645349] ------------[ cut here ]------------
[ 27.645453] WARNING: CPU: 1 PID: 2323 at kernel/softirq.c:364 __local_bh_enable_ip+0x85/0xc0
[ 27.645516] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio cmac bnep iwlmvm led_class vfat fat mac80211 libarc4 iwlwifi x86_pkg_temp_thermal coretemp i915 btusb btintel bluetooth snd_hda_intel snd_intel_dspcfg aesni_intel r8169 cfg80211 realtek ecdh_generic snd_hda_codec mdio_devres crypto_simd i2c_i801 rfkill intel_gtt ecc mei_me cryptd i2c_smbus snd_hda_core libphy mei i2c_algo_bit snd_pcm drm_kms_helper syscopyarea sysfillrect sysimgblt snd_timer fb_sys_fops snd sch_fq_codel crypto_user drm efivarfs ext4 mbcache jbd2 ums_realtek crc32c_intel ahci libahci libata
[ 27.645991] CPU: 1 PID: 2323 Comm: ip Not tainted 5.12.0-rc6-next-20210406+ #4
[ 27.646040] Hardware name: NA ZBOX-CI327NANO-GS-01/ZBOX-CI327NANO-GS-01, BIOS 5.12 04/28/2020
[ 27.646094] RIP: 0010:__local_bh_enable_ip+0x85/0xc0
[ 27.646132] Code: 8b 05 af c6 ba 47 a9 00 ff ff 00 74 32 65 ff 0d a1 c6 ba 47 e8 7c b4 0e 00 fb 5b 41 5c 5d c3 65 8b 05 6b cc ba 47 85 c0 75 ae <0f> 0b eb aa e8 92 b3 0e 00 eb ab 4c 89 e7 e8 18 ff 05 00 eb b4 65
[ 27.646275] RSP: 0018:ffffbb574062b1b8 EFLAGS: 00010046
[ 27.646311] RAX: 0000000000000000 RBX: 0000000000000201 RCX: 0000000000000000
[ 27.646355] RDX: 0000000000000003 RSI: 0000000000000201 RDI: ffffffffc051192b
[ 27.646401] RBP: ffffbb574062b1c8 R08: 0000000000000000 R09: 0000000000000001
[ 27.646444] R10: ffff9eec03243e00 R11: 0000000000000000 R12: ffffffffc051192b
[ 27.646488] R13: ffff9eec07e72b40 R14: 0000000000000001 R15: 0000000000000000
[ 27.646533] FS: 00007fce73f11740(0000) GS:ffff9eec7bc80000(0000) knlGS:0000000000000000
[ 27.646584] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 27.646622] CR2: 00005581ebf10cc0 CR3: 0000000102924000 CR4: 00000000003506e0
[ 27.646668] Call Trace:
[ 27.646687] _raw_spin_unlock_bh+0x2c/0x40
[ 27.646718] iwl_pcie_gen2_enqueue_hcmd+0x50b/0x890 [iwlwifi]
[ 27.646781] iwl_trans_txq_send_hcmd+0x68/0x3b0 [iwlwifi]
[ 27.646836] iwl_trans_send_cmd+0x7d/0x170 [iwlwifi]
[ 27.646888] iwl_mvm_send_cmd+0x29/0x80 [iwlmvm]
[ 27.646942] iwl_mvm_led_set+0xa5/0xd0 [iwlmvm]
[ 27.646995] iwl_led_brightness_set+0x1a/0x20 [iwlmvm]
[ 27.647050] led_set_brightness_nosleep+0x24/0x50
[ 27.647085] led_set_brightness+0x41/0x50
[ 27.647115] led_trigger_event+0x46/0x70
[ 27.647143] ieee80211_led_radio+0x24/0x30 [mac80211]
[ 27.647288] ieee80211_do_open+0x4c4/0x9a0 [mac80211]
[ 27.647379] ieee80211_open+0x69/0x90 [mac80211]
[ 27.647487] __dev_open+0xd6/0x190
[ 27.647517] __dev_change_flags+0x1b2/0x230
[ 27.647548] dev_change_flags+0x21/0x60
[ 27.647577] do_setlink+0x289/0x1190
[ 27.647607] ? __nla_validate_parse+0x60/0xbd0
[ 27.647644] __rtnl_newlink+0x61c/0xa10
[ 27.647677] ? mark_lock+0x25/0x1110
[ 27.647709] ? rcu_read_lock_sched_held+0x41/0x80
[ 27.647744] ? kmem_cache_alloc_trace+0x21e/0x250
[ 27.647781] rtnl_newlink+0x44/0x70
[ 27.647808] rtnetlink_rcv_msg+0x17f/0x4b0
[ 27.647838] ? netlink_deliver_tap+0x10e/0x3f0
[ 27.647873] ? find_held_lock+0x31/0x90
[ 27.647902] ? netlink_deliver_tap+0x10e/0x3f0
[ 27.647934] ? rtnetlink_put_metrics+0x1d0/0x1d0
[ 27.647967] netlink_rcv_skb+0x50/0xf0
[ 27.648000] rtnetlink_rcv+0x10/0x20
[ 27.648027] netlink_unicast+0x1a3/0x270
[ 27.648056] netlink_sendmsg+0x22c/0x430
[ 27.648085] ? netlink_unicast+0x270/0x270
[ 27.648116] ____sys_sendmsg+0x2a6/0x2e0
[ 27.648147] ? import_iovec+0x1b/0x20
[ 27.648179] ? sendmsg_copy_msghdr+0x79/0xa0
[ 27.648211] ___sys_sendmsg+0x82/0xc0
[ 27.648240] __sys_sendmsg+0x62/0xb0
[ 27.648268] ? syscall_enter_from_user_mode+0x21/0x60
[ 27.648307] __x64_sys_sendmsg+0x1a/0x20
[ 27.648337] do_syscall_64+0x38/0x50
[ 27.648366] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 27.648403] RIP: 0033:0x7fce74030737
[ 27.648433] Code: 0c 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
[ 27.648547] RSP: 002b:00007ffdd61d1498 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 27.648600] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fce74030737
[ 27.648645] RDX: 0000000000000000 RSI: 00007ffdd61d1500 RDI: 0000000000000003
[ 27.648691] RBP: 00000000606d6d4f R08: 0000000000000001 R09: 00007fce740f1a60
[ 27.648736] R10: 0000000000000230 R11: 0000000000000246 R12: 0000000000000001
[ 27.648782] R13: 00007ffdd61d15d0 R14: 0000000000000000 R15: 00005581ebec6020
[ 27.648830] irq event stamp: 94495
[ 27.648855] hardirqs last enabled at (94493): [<ffffffffb846a864>] __local_bh_enable_ip+0x74/0xc0
[ 27.648917] hardirqs last disabled at (94494): [<ffffffffb8bf198f>] _raw_read_lock_irqsave+0x7f/0x90
[ 27.648977] softirqs last enabled at (94492): [<ffffffffc051192b>] iwl_pcie_gen2_enqueue_hcmd+0x50b/0x890 [iwlwifi]
[ 27.649064] softirqs last disabled at (94495): [<ffffffffc0511516>] iwl_pcie_gen2_enqueue_hcmd+0xf6/0x890 [iwlwifi]
[ 27.649151] ---[ end trace da6e11a6f99dba37 ]---
[ 27.649242] ------------[ cut here ]------------
[ 27.649326] raw_local_irq_restore() called with IRQs enabled
[ 27.649367] WARNING: CPU: 1 PID: 2323 at kernel/locking/irqflag-debug.c:10 warn_bogus_irq_restore+0x22/0x30
[ 27.649433] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio cmac bnep iwlmvm led_class vfat fat mac80211 libarc4 iwlwifi x86_pkg_temp_thermal coretemp i915 btusb btintel bluetooth snd_hda_intel snd_intel_dspcfg aesni_intel r8169 cfg80211 realtek ecdh_generic snd_hda_codec mdio_devres crypto_simd i2c_i801 rfkill intel_gtt ecc mei_me cryptd i2c_smbus snd_hda_core libphy mei i2c_algo_bit snd_pcm drm_kms_helper syscopyarea sysfillrect sysimgblt snd_timer fb_sys_fops snd sch_fq_codel crypto_user drm efivarfs ext4 mbcache jbd2 ums_realtek crc32c_intel ahci libahci libata
[ 27.649900] CPU: 1 PID: 2323 Comm: ip Tainted: G W 5.12.0-rc6-next-20210406+ #4
[ 27.649956] Hardware name: NA ZBOX-CI327NANO-GS-01/ZBOX-CI327NANO-GS-01, BIOS 5.12 04/28/2020
[ 27.650010] RIP: 0010:warn_bogus_irq_restore+0x22/0x30
[ 27.650047] Code: cc cc cc cc cc cc cc cc 55 48 89 e5 80 3d ca 51 9f 00 00 74 02 5d c3 48 c7 c7 18 07 21 b9 c6 05 b8 51 9f 00 01 e8 12 f8 fc ff <0f> 0b 5d c3 cc cc cc cc cc cc cc cc cc cc 55 48 89 e5 41 54 53 44
[ 27.650177] RSP: 0018:ffffbb574062b3d0 EFLAGS: 00010286
[ 27.650216] RAX: 0000000000000000 RBX: 0000000000000200 RCX: ffff9eec7bc976f8
[ 27.650303] RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffff9eec7bc976f0
[ 27.650423] RBP: ffffbb574062b3d0 R08: 0000000000000001 R09: 0000000000000001
[ 27.650542] R10: 00000000ffffe000 R11: 3fffffffffffffff R12: ffff9eec08e9ac78
[ 27.650661] R13: 00000000000000ff R14: 0000000000000286 R15: ffff9eec08e9ac78
[ 27.650781] FS: 00007fce73f11740(0000) GS:ffff9eec7bc80000(0000) knlGS:0000000000000000
[ 27.650919] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 27.651070] CR2: 00005581ebf10cc0 CR3: 0000000102924000 CR4: 00000000003506e0
[ 27.651243] Call Trace:
[ 27.651298] _raw_read_unlock_irqrestore+0x4f/0x60
[ 27.651392] led_trigger_event+0x64/0x70
[ 27.651470] ieee80211_led_radio+0x24/0x30 [mac80211]
[ 27.651758] ieee80211_do_open+0x4c4/0x9a0 [mac80211]
[ 27.652006] ieee80211_open+0x69/0x90 [mac80211]
[ 27.652334] __dev_open+0xd6/0x190
[ 27.652407] __dev_change_flags+0x1b2/0x230
[ 27.652490] dev_change_flags+0x21/0x60
[ 27.652566] do_setlink+0x289/0x1190
[ 27.652641] ? __nla_validate_parse+0x60/0xbd0
[ 27.652729] __rtnl_newlink+0x61c/0xa10
[ 27.652809] ? mark_lock+0x25/0x1110
[ 27.652886] ? rcu_read_lock_sched_held+0x41/0x80
[ 27.652977] ? kmem_cache_alloc_trace+0x21e/0x250
[ 27.653068] rtnl_newlink+0x44/0x70
[ 27.653139] rtnetlink_rcv_msg+0x17f/0x4b0
[ 27.653257] ? netlink_deliver_tap+0x10e/0x3f0
[ 27.653343] ? find_held_lock+0x31/0x90
[ 27.653419] ? netlink_deliver_tap+0x10e/0x3f0
[ 27.653504] ? rtnetlink_put_metrics+0x1d0/0x1d0
[ 27.653591] netlink_rcv_skb+0x50/0xf0
[ 27.653667] rtnetlink_rcv+0x10/0x20
[ 27.653738] netlink_unicast+0x1a3/0x270
[ 27.653816] netlink_sendmsg+0x22c/0x430
[ 27.653893] ? netlink_unicast+0x270/0x270
[ 27.653973] ____sys_sendmsg+0x2a6/0x2e0
[ 27.654052] ? import_iovec+0x1b/0x20
[ 27.654127] ? sendmsg_copy_msghdr+0x79/0xa0
[ 27.654250] ___sys_sendmsg+0x82/0xc0
[ 27.654332] __sys_sendmsg+0x62/0xb0
[ 27.654407] ? syscall_enter_from_user_mode+0x21/0x60
[ 27.654502] __x64_sys_sendmsg+0x1a/0x20
[ 27.654581] do_syscall_64+0x38/0x50
[ 27.654654] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 27.654748] RIP: 0033:0x7fce74030737
[ 27.654819] Code: 0c 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
[ 27.655111] RSP: 002b:00007ffdd61d1498 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 27.655284] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fce74030737
[ 27.655405] RDX: 0000000000000000 RSI: 00007ffdd61d1500 RDI: 0000000000000003
[ 27.655523] RBP: 00000000606d6d4f R08: 0000000000000001 R09: 00007fce740f1a60
[ 27.655641] R10: 0000000000000230 R11: 0000000000000246 R12: 0000000000000001
[ 27.655759] R13: 00007ffdd61d15d0 R14: 0000000000000000 R15: 00005581ebec6020
[ 27.655879] irq event stamp: 95385
[ 27.655944] hardirqs last enabled at (95393): [<ffffffffb84d2270>] console_unlock+0x4a0/0x5c0
[ 27.656093] hardirqs last disabled at (95400): [<ffffffffb84d21e3>] console_unlock+0x413/0x5c0
[ 27.656275] softirqs last enabled at (95022): [<ffffffffb846a9ec>] irq_exit_rcu+0xac/0xe0
[ 27.656420] softirqs last disabled at (95017): [<ffffffffb846a9ec>] irq_exit_rcu+0xac/0xe0
[ 27.656561] ---[ end trace da6e11a6f99dba38 ]---
