From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mout.gmx.net (mout.gmx.net [212.227.17.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C75C714EC62 for ; Mon, 25 Aug 2025 10:10:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=212.227.17.22 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756116631; cv=none; b=tAK910LinEFgNOHRkiTbxXiR9IHeWRbXiaEZn6oEi7CkJRmUAP0s30xbXpILtRnjBGDA5L2UlmluMkctwIzXCtcT44y2nR5VV9oDzlmg7KhPtMMoHdeI/ZPIppkgiJXz+PLTlqMCTOukFp5Enb0r2upTInjo25sbWC9OIUwoqLw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756116631; c=relaxed/simple; bh=RkW1/PtgZt5XQuwMW5DRWPFu+neCHpj1FR2SPbTAWYg=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; 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Nm2P9DLS3fZUXJobz2RIrSukVeAqgwL1dm+ngGrpqKDUcxE4TrtoHkFYXXnWW+ljt2eDUojD9 rzZCRQV51ko3Qix+CkEdegyPVBB9BKGhW6rgDEhYkQL9cCYXGGj0jD54bijppqwenghkwo7eT hDBkCNI9REXDrJFlJwzhO1LSgSzbZ79iTWdwfX+o/TDRWFXsvbyVKVpqjB3xxKsn8l63Gvu0f pVcLHqs9IL8yf+pQozIpV27ZyJOnHeNwH9/bjS9AB4SAPjD+vWbgL+4GNwuVKnT4Dvt/sPehJ m95ipUGF9Yc3zN5zu7BhlX3PmxKhr2RWu4xjVJCAweHEBx4B5VQneIe2JvOEg1lbFxLQNQKZV LnxFJ+vatdspx0zWruYpe+64/7z0nrUnRFkr4cCtmPE3dVUPYfuQ5c3ISWBUGEpIel5i9KLlo pe2ujvq2rEXY9PbRJezByjrEJUtlwg4osaEB+TaKsr0XCh8hcLvdtu3DaIgk2tJJS0OLJXllC Lvx2W0/eDknb9ObD5g6QqgDTMbViSe3HbHljIpe0YLTnRMuTHRhmgWljFzmCwzifWknePBOi8 HN8dyURsZWl3KGYIlC1lrQlOfjwAFM4h9WANJI34Z7D2drVG0HqnG3AvL3gf+U3C7DADrKOf4 nhPi3FRoLGCuh5QySvMM+WLPkPZAT1NzjSV+vSLHf+UR/pQMrim51ulZNC9guO+nvVmvfl5+j QtiOhJmsvfDJS52KLq6fCDpzlYhutMVtu53vyAOqkKQfRbtpd9Z1mjldcdJkBccqd2MR8sBHL 151LS6NhRTzN6rRAieiT7CkzEYMn On Mon, 2025-08-25 at 07:53 +0200, Mike Galbraith wrote: >=20 > On the pi4, lockdep muttered about ring->lock in bcmgenet_xmit() and > bcmgenet_tx_poll() - switching to irqsave/restore spinlock variants > there silenced it. The deadlock splat below. [ 90.529661] =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D [ 90.535817] WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected [ 90.542508] 6.17.0-rc2-v8-lockdep #529 Tainted: G C =20 [ 90.548929] ----------------------------------------------------- [ 90.555092] swapper/0/0 [HC0[0]:SC1[1]:HE0:SE0] is trying to acquire: [ 90.561605] ffffff8102518d48 (&ring->lock){+.-.}-{3:3}, at: bcmgenet_xmi= t+0x78/0x860 [ 90.569439]=20 [ 90.569439] and this task is already holding: [ 90.575341] ffffffd6357c3298 (target_list_lock){..-.}-{3:3}, at: write_m= sg+0x60/0x1b0 [netconsole] [ 90.584408] which would create a new lock dependency: [ 90.589507] (target_list_lock){..-.}-{3:3} -> (&ring->lock){+.-.}-{3:3} [ 90.596283]=20 [ 90.596283] but this new dependency connects a HARDIRQ-irq-safe lock: [ 90.604305] (&host->lock){-.-.}-{3:3} [ 90.604322]=20 [ 90.604322] ... which became HARDIRQ-irq-safe at: [ 90.614339] lock_acquire+0x1d4/0x368 [ 90.618124] _raw_spin_lock+0x50/0x70 [ 90.621899] bcm2835_mmc_irq+0x28/0x8c8 [ 90.625870] __handle_irq_event_percpu+0x94/0x318 [ 90.630699] handle_irq_event+0x54/0xb8 [ 90.634668] handle_fasteoi_irq+0x12c/0x270 [ 90.638980] handle_irq_desc+0x48/0x68 [ 90.642846] generic_handle_domain_irq+0x24/0x38 [ 90.647603] gic_handle_irq+0x48/0xd8 [ 90.651391] call_on_irq_stack+0x30/0x70 [ 90.655435] do_interrupt_handler+0xdc/0xe8 [ 90.659762] el1_interrupt+0x34/0x68 [ 90.663450] el1h_64_irq_handler+0x18/0x28 [ 90.667674] el1h_64_irq+0x6c/0x70 [ 90.671195] d_alloc_parallel+0x3dc/0x9e8 [ 90.675332] __lookup_slow+0x98/0x188 [ 90.679112] lookup_noperm+0x74/0x88 [ 90.682810] simple_start_creating+0x70/0xe8 [ 90.687209] start_creating+0x7c/0x110 [ 90.691082] __debugfs_create_file+0x54/0x230 [ 90.695577] debugfs_create_file_unsafe+0x28/0x40 [ 90.700413] debugfs_create_u32+0x78/0x90 [ 90.704562] link_and_create_debugfs+0x78/0xf8 [ 90.709127] _regulator_get_common+0x14c/0x398 [ 90.713716] _regulator_get+0x48/0xa0 [ 90.717489] _devm_regulator_get+0x60/0xb0 [ 90.721720] devm_regulator_get_optional+0x1c/0x30 [ 90.726649] mmc_regulator_get_supply+0x48/0x1c8 [ 90.731402] sdhci_setup_host+0x904/0xd30 [ 90.735534] sdhci_add_host+0x20/0x60 [ 90.739325] sdhci_iproc_probe+0xc8/0x108 [ 90.743462] platform_probe+0x64/0xa8 [ 90.747246] really_probe+0xc4/0x2a8 [ 90.750937] __driver_probe_device+0x80/0x140 [ 90.755432] driver_probe_device+0xe0/0x170 [ 90.759739] __device_attach_driver+0xc0/0x148 [ 90.764322] bus_for_each_drv+0x88/0xf0 [ 90.768282] __device_attach_async_helper+0xb8/0xe8 [ 90.773300] async_run_entry_fn+0x3c/0xf0 [ 90.777436] process_one_work+0x20c/0x5e8 [ 90.781573] worker_thread+0x1c8/0x378 [ 90.785448] kthread+0x168/0x230 [ 90.788792] ret_from_fork+0x10/0x20 [ 90.792488]=20 [ 90.792488] to a HARDIRQ-irq-unsafe lock: [ 90.798033] (&ring->lock){+.-.}-{3:3} [ 90.798051]=20 [ 90.798051] ... which became HARDIRQ-irq-unsafe at: [ 90.808240] ... [ 90.808245] lock_acquire+0x1d4/0x368 [ 90.813784] _raw_spin_lock+0x50/0x70 [ 90.817570] bcmgenet_xmit+0x78/0x860 [ 90.821359] dev_hard_start_xmit+0xc0/0x2d0 [ 90.825671] sch_direct_xmit+0x98/0x1e8 [ 90.829633] __dev_queue_xmit+0x5a0/0x13a8 [ 90.833856] packet_xmit+0xcc/0x150 [ 90.837465] packet_sendmsg+0x8e8/0x1328 [ 90.841515] __sock_sendmsg+0x64/0xc0 [ 90.845295] ____sys_sendmsg+0x270/0x2b0 [ 90.849343] ___sys_sendmsg+0x88/0xf0 [ 90.853133] __sys_sendmsg+0x88/0x100 [ 90.856913] __arm64_sys_sendmsg+0x2c/0x40 [ 90.861138] invoke_syscall+0x50/0x120 [ 90.865011] el0_svc_common.constprop.0+0x48/0xf0 [ 90.869851] do_el0_svc+0x24/0x38 [ 90.873290] el0_svc+0x4c/0x178 [ 90.876543] el0t_64_sync_handler+0xa0/0xe8 [ 90.880858] el0t_64_sync+0x198/0x1a0 [ 90.884644]=20 [ 90.884644] other info that might help us debug this: [ 90.884644]=20 [ 90.892742] Chain exists of: [ 90.892742] &host->lock --> target_list_lock --> &ring->lock [ 90.892742]=20 [ 90.903035] Possible interrupt unsafe locking scenario: [ 90.903035]=20 [ 90.909901] CPU0 CPU1 [ 90.914482] ---- ---- [ 90.919060] lock(&ring->lock); [ 90.922311] local_irq_disable(); [ 90.928297] lock(&host->lock); [ 90.934107] lock(target_list_lock); [ 90.940356] [ 90.943001] lock(&host->lock); [ 90.946430]=20 [ 90.946430] *** DEADLOCK *** [ 90.946430]=20 [ 90.952419] 12 locks held by swapper/0/0: [ 90.956468] #0: ffffff8100049948 ((wq_completion)events_bh_highpri){+.-= .}-{0:0}, at: process_one_work+0x190/0x5e8 [ 90.966944] #1: ffffffc080003e60 ((work_completion)(&bh->bh)){+.-.}-{0:= 0}, at: process_one_work+0x1b8/0x5e8 [ 90.976885] #2: ffffff81082f2230 (&dev->event_lock){..-.}-{3:3}, at: in= put_event+0x50/0xb8 [ 90.985339] #3: ffffffd6a169c3c8 (rcu_read_lock){....}-{1:3}, at: input= _pass_values+0x38/0x2e8 [ 90.994141] #4: ffffffd6a169c3c8 (rcu_read_lock){....}-{1:3}, at: __han= dle_sysrq+0x8/0x308 [ 91.002591] #5: ffffffd6a162a8e8 (console_lock){+.+.}-{0:0}, at: vprint= k_default+0x40/0x58 [ 91.011041] #6: ffffffd6a162a940 (console_srcu){....}-{0:0}, at: consol= e_flush_all+0x88/0x4a8 [ 91.019751] #7: ffffffd6a162ab00 (console_owner){..-.}-{0:0}, at: conso= le_lock_spinning_enable+0x50/0x90 [ 91.029437] #8: ffffffd6a162ab28 (printk_legacy_map-wait-type-override)= {....}-{4:4}, at: console_flush_all+0x2a0/0x4a8 [ 91.040346] #9: ffffffd6357c3298 (target_list_lock){..-.}-{3:3}, at: wr= ite_msg+0x60/0x1b0 [netconsole] [ 91.049854] #10: ffffffd6a169c3c8 (rcu_read_lock){....}-{1:3}, at: netp= oll_send_skb+0x4c/0x4b0 [ 91.058655] #11: ffffff8108050118 (_xmit_ETHER#2){+.-.}-{3:3}, at: netp= oll_send_skb+0x3e4/0x4b0 [ 91.067545]=20 [ 91.067545] the dependencies between HARDIRQ-irq-safe lock and the holdi= ng lock: [ 91.076524] -> (&host->lock){-.-.}-{3:3} { [ 91.080836] IN-HARDIRQ-W at: [ 91.084181] lock_acquire+0x1d4/0x368 [ 91.089907] _raw_spin_lock+0x50/0x70 [ 91.095623] bcm2835_mmc_irq+0x28/0x8c8 [ 91.101520] __handle_irq_event_percpu+0x94/0x318 [ 91.108301] handle_irq_event+0x54/0xb8 [ 91.114198] handle_fasteoi_irq+0x12c/0x270 [ 91.120450] handle_irq_desc+0x48/0x68 [ 91.126259] generic_handle_domain_irq+0x24/0x38 [ 91.132944] gic_handle_irq+0x48/0xd8 [ 91.138669] call_on_irq_stack+0x30/0x70 [ 91.144655] do_interrupt_handler+0xdc/0xe8 [ 91.150904] el1_interrupt+0x34/0x68 [ 91.156538] el1h_64_irq_handler+0x18/0x28 [ 91.162699] el1h_64_irq+0x6c/0x70 [ 91.168156] d_alloc_parallel+0x3dc/0x9e8 [ 91.174230] __lookup_slow+0x98/0x188 [ 91.179951] lookup_noperm+0x74/0x88 [ 91.185582] simple_start_creating+0x70/0xe8 [ 91.191919] start_creating+0x7c/0x110 [ 91.197739] __debugfs_create_file+0x54/0x230 [ 91.204164] debugfs_create_file_unsafe+0x28/0x40 [ 91.210927] debugfs_create_u32+0x78/0x90 [ 91.217009] link_and_create_debugfs+0x78/0xf8 [ 91.223517] _regulator_get_common+0x14c/0x398 [ 91.230028] _regulator_get+0x48/0xa0 [ 91.235752] _devm_regulator_get+0x60/0xb0 [ 91.241910] devm_regulator_get_optional+0x1c/0x3= 0 [ 91.248773] mmc_regulator_get_supply+0x48/0x1c8 [ 91.255461] sdhci_setup_host+0x904/0xd30 [ 91.261535] sdhci_add_host+0x20/0x60 [ 91.267260] sdhci_iproc_probe+0xc8/0x108 [ 91.273330] platform_probe+0x64/0xa8 [ 91.279058] really_probe+0xc4/0x2a8 [ 91.284684] __driver_probe_device+0x80/0x140 [ 91.291118] driver_probe_device+0xe0/0x170 [ 91.297367] __device_attach_driver+0xc0/0x148 [ 91.303881] bus_for_each_drv+0x88/0xf0 [ 91.309781] __device_attach_async_helper+0xb8/0x= e8 [ 91.316734] async_run_entry_fn+0x3c/0xf0 [ 91.322804] process_one_work+0x20c/0x5e8 [ 91.328878] worker_thread+0x1c8/0x378 [ 91.334686] kthread+0x168/0x230 [ 91.339969] ret_from_fork+0x10/0x20 [ 91.345605] IN-SOFTIRQ-W at: [ 91.348943] lock_acquire+0x1d4/0x368 [ 91.354671] _raw_spin_lock_irqsave+0x60/0x90 [ 91.361097] bcm2835_mmc_tasklet_finish+0x20/0x10= 0 [ 91.367962] tasklet_action_common+0x1a4/0x1c8 [ 91.374476] tasklet_action+0x48/0x60 [ 91.380187] handle_softirqs+0x144/0x528 [ 91.386175] __do_softirq+0x1c/0x28 [ 91.391725] ____do_softirq+0x18/0x30 [ 91.397444] call_on_irq_stack+0x30/0x70 [ 91.403434] do_softirq_own_stack+0x24/0x38 [ 91.409679] __irq_exit_rcu+0x100/0x1f8 [ 91.415580] irq_exit_rcu+0x18/0x58 [ 91.421126] el1_interrupt+0x38/0x68 [ 91.426759] el1h_64_irq_handler+0x18/0x28 [ 91.432921] el1h_64_irq+0x6c/0x70 [ 91.438377] _raw_spin_unlock_irqrestore+0x6c/0xa= 0 [ 91.445237] bcm2835_mmc_request+0x64/0xc8 [ 91.451405] __mmc_start_request+0x7c/0x158 [ 91.457654] mmc_start_request+0xa0/0xf0 [ 91.463640] mmc_wait_for_req+0x78/0x110 [ 91.469620] mmc_wait_for_cmd+0x6c/0xb0 [ 91.475522] sdio_reset+0x60/0x138 [ 91.480972] mmc_rescan+0x2bc/0x338 [ 91.486518] process_one_work+0x20c/0x5e8 [ 91.492594] worker_thread+0x1c8/0x378 [ 91.498402] kthread+0x168/0x230 [ 91.503683] ret_from_fork+0x10/0x20 [ 91.509316] INITIAL USE at: [ 91.512586] lock_acquire+0x1d4/0x368 [ 91.518205] _raw_spin_lock_irqsave+0x60/0x90 [ 91.524557] bcm2835_mmc_reset+0x34/0x238 [ 91.530529] bcm2835_mmc_probe+0x1a0/0x730 [ 91.536616] platform_probe+0x64/0xa8 [ 91.542248] really_probe+0xc4/0x2a8 [ 91.547794] __driver_probe_device+0x80/0x140 [ 91.554131] driver_probe_device+0xe0/0x170 [ 91.560293] __device_attach_driver+0xc0/0x148 [ 91.566719] bus_for_each_drv+0x88/0xf0 [ 91.572514] __device_attach+0xa4/0x198 [ 91.578336] device_initial_probe+0x1c/0x30 [ 91.584498] bus_probe_device+0xb4/0xc0 [ 91.590308] deferred_probe_work_func+0x90/0xd8 [ 91.596822] process_one_work+0x20c/0x5e8 [ 91.602793] worker_thread+0x1c8/0x378 [ 91.608528] kthread+0x168/0x230 [ 91.613721] ret_from_fork+0x10/0x20 [ 91.619253] } [ 91.621101] ... key at: [] __key.2+0x0/0x10 [ 91.627629] -> (console_owner){..-.}-{0:0} { [ 91.632029] IN-SOFTIRQ-W at: [ 91.635272] lock_acquire+0x1d4/0x368 [ 91.640831] console_lock_spinning_enable+0x74/0x90 [ 91.647609] console_flush_all+0x2ac/0x4a8 [ 91.653594] console_unlock+0x84/0x188 [ 91.659228] vprintk_emit+0x24c/0x450 [ 91.664772] vprintk_default+0x40/0x58 [ 91.670406] vprintk+0x3c/0x80 [ 91.675335] _printk+0x64/0x98 [ 91.680264] __handle_sysrq+0x1ec/0x308 [ 91.685985] sysrq_filter+0xcc/0x518 [ 91.691442] input_handle_events_filter+0x58/0xc0 [ 91.698030] input_pass_values+0x1fc/0x2e8 [ 91.704029] input_handle_event+0x450/0x558 [ 91.710090] input_event+0x6c/0xb8 [ 91.715384] hidinput_report_event+0x4c/0x78 [ 91.721545] hid_report_raw_event+0xb4/0x418 [ 91.727707] hid_input_report+0x138/0x1a0 [ 91.733604] hid_irq_in+0x180/0x308 [ 91.738959] __usb_hcd_giveback_urb+0x98/0x160 [ 91.745310] usb_giveback_urb_bh+0xb0/0x150 [ 91.751371] process_one_work+0x20c/0x5e8 [ 91.757281] bh_worker+0x1b0/0x218 [ 91.762563] workqueue_softirq_action+0x80/0x98 [ 91.768988] tasklet_hi_action+0x20/0x60 [ 91.774784] handle_softirqs+0x144/0x528 [ 91.780607] __do_softirq+0x1c/0x28 [ 91.785976] ____do_softirq+0x18/0x30 [ 91.791522] call_on_irq_stack+0x30/0x70 [ 91.797331] do_softirq_own_stack+0x24/0x38 [ 91.803404] __irq_exit_rcu+0x100/0x1f8 [ 91.809113] irq_exit_rcu+0x18/0x58 [ 91.814494] el1_interrupt+0x38/0x68 [ 91.819951] el1h_64_irq_handler+0x18/0x28 [ 91.825938] el1h_64_irq+0x6c/0x70 [ 91.831219] default_idle_call+0x84/0x140 [ 91.837104] do_idle+0x22c/0x298 [ 91.842208] cpu_startup_entry+0x3c/0x50 [ 91.848030] rest_init+0x108/0x1a0 [ 91.853312] start_kernel+0x760/0x8c8 [ 91.858856] __primary_switched+0x88/0x98 [ 91.864742] INITIAL USE at: [ 91.867923] lock_acquire+0x1d4/0x368 [ 91.873368] console_lock_spinning_enable+0x74/0x90 [ 91.880063] console_flush_all+0x2ac/0x4a8 [ 91.885955] console_unlock+0x84/0x188 [ 91.891506] vprintk_emit+0x24c/0x450 [ 91.896963] vprintk_default+0x40/0x58 [ 91.902508] vprintk+0x3c/0x80 [ 91.907349] _printk+0x64/0x98 [ 91.912191] register_console+0x3a8/0x4e0 [ 91.918000] con_init+0x1c8/0x270 [ 91.923106] console_init+0x98/0x2a0 [ 91.928474] start_kernel+0x4e8/0x8c8 [ 91.933931] __primary_switched+0x88/0x98 [ 91.939741] } [ 91.941495] ... key at: [] console_owner_dep_ma= p+0x0/0x28 [ 91.949158] ... acquired at: [ 91.952233] console_lock_spinning_enable+0x74/0x90 [ 91.957345] console_flush_all+0x2ac/0x4a8 [ 91.961664] console_unlock+0x84/0x188 [ 91.965625] vprintk_emit+0x24c/0x450 [ 91.969485] vprintk_default+0x40/0x58 [ 91.973447] vprintk+0x3c/0x80 [ 91.976703] _printk+0x64/0x98 [ 91.979964] bcm2835_mmc_send_command+0x944/0xa08 [ 91.984894] bcm2835_mmc_request+0x58/0xc8 [ 91.989207] __mmc_start_request+0x7c/0x158 [ 91.993603] mmc_start_request+0xa0/0xf0 [ 91.997745] mmc_wait_for_req+0x78/0x110 [ 92.001876] mmc_wait_for_cmd+0x6c/0xb0 [ 92.005931] sdio_reset+0x60/0x138 [ 92.009547] mmc_rescan+0x2bc/0x338 [ 92.013231] process_one_work+0x20c/0x5e8 [ 92.017461] worker_thread+0x1c8/0x378 [ 92.021421] kthread+0x168/0x230 [ 92.024855] ret_from_fork+0x10/0x20 [ 92.028640]=20 [ 92.030136] -> (target_list_lock){..-.}-{3:3} { [ 92.034720] IN-SOFTIRQ-W at: [ 92.037882] lock_acquire+0x1d4/0x368 [ 92.043251] _raw_spin_lock_irqsave+0x60/0x90 [ 92.049324] write_msg+0x60/0x1b0 [netconsole] [ 92.055486] console_flush_all+0x2e4/0x4a8 [ 92.061296] console_unlock+0x84/0x188 [ 92.066753] vprintk_emit+0x24c/0x450 [ 92.072122] vprintk_default+0x40/0x58 [ 92.077579] vprintk+0x3c/0x80 [ 92.082332] _printk+0x64/0x98 [ 92.087091] __handle_sysrq+0x1ec/0x308 [ 92.092636] sysrq_filter+0xcc/0x518 [ 92.097911] input_handle_events_filter+0x58/0xc0 [ 92.104337] input_pass_values+0x1fc/0x2e8 [ 92.110152] input_handle_event+0x450/0x558 [ 92.116044] input_event+0x6c/0xb8 [ 92.121144] hidinput_report_event+0x4c/0x78 [ 92.127129] hid_report_raw_event+0xb4/0x418 [ 92.133120] hid_input_report+0x138/0x1a0 [ 92.138835] hid_irq_in+0x180/0x308 [ 92.144034] __usb_hcd_giveback_urb+0x98/0x160 [ 92.150189] usb_giveback_urb_bh+0xb0/0x150 [ 92.156093] process_one_work+0x20c/0x5e8 [ 92.161815] bh_worker+0x1b0/0x218 [ 92.166919] workqueue_softirq_action+0x80/0x98 [ 92.173168] tasklet_hi_action+0x20/0x60 [ 92.178802] handle_softirqs+0x144/0x528 [ 92.184435] __do_softirq+0x1c/0x28 [ 92.189629] ____do_softirq+0x18/0x30 [ 92.194993] call_on_irq_stack+0x30/0x70 [ 92.200630] do_softirq_own_stack+0x24/0x38 [ 92.206529] __irq_exit_rcu+0x100/0x1f8 [ 92.212074] irq_exit_rcu+0x18/0x58 [ 92.217267] el1_interrupt+0x38/0x68 [ 92.222548] el1h_64_irq_handler+0x18/0x28 [ 92.228357] el1h_64_irq+0x6c/0x70 [ 92.233462] default_idle_call+0x84/0x140 [ 92.239184] do_idle+0x22c/0x298 [ 92.244112] cpu_startup_entry+0x3c/0x50 [ 92.249746] rest_init+0x108/0x1a0 [ 92.254852] start_kernel+0x760/0x8c8 [ 92.260221] __primary_switched+0x88/0x98 [ 92.265942] INITIAL USE at: [ 92.269022] lock_acquire+0x1d4/0x368 [ 92.274303] _raw_spin_lock_irqsave+0x60/0x90 [ 92.280289] make_netconsole_target+0xe4/0x1d0 [netcon= sole] [ 92.287507] configfs_mkdir+0x184/0x4c0 [ 92.292964] vfs_mkdir+0x1a8/0x280 [ 92.297981] do_mkdirat+0x140/0x180 [ 92.303086] __arm64_sys_mkdirat+0x38/0x58 [ 92.308807] invoke_syscall+0x50/0x120 [ 92.314173] el0_svc_common.constprop.0+0x48/0xf0 [ 92.320514] do_el0_svc+0x24/0x38 [ 92.325444] el0_svc+0x4c/0x178 [ 92.330195] el0t_64_sync_handler+0xa0/0xe8 [ 92.336005] el0t_64_sync+0x198/0x1a0 [ 92.341282] } [ 92.342961] ... key at: [] target_list_lock+0x18= /0xffffffffffffed80 [netconsole] [ 92.352553] ... acquired at: [ 92.355542] _raw_spin_lock_irqsave+0x60/0x90 [ 92.360123] write_msg+0x60/0x1b0 [netconsole] [ 92.364789] console_flush_all+0x2e4/0x4a8 [ 92.369099] console_unlock+0x84/0x188 [ 92.373062] vprintk_emit+0x24c/0x450 [ 92.376932] vprintk_default+0x40/0x58 [ 92.380894] vprintk+0x3c/0x80 [ 92.384150] _printk+0x64/0x98 [ 92.387407] __handle_sysrq+0x1ec/0x308 [ 92.391458] sysrq_filter+0xcc/0x518 [ 92.395242] input_handle_events_filter+0x58/0xc0 [ 92.400172] input_pass_values+0x1fc/0x2e8 [ 92.404486] input_handle_event+0x450/0x558 [ 92.408885] input_event+0x6c/0xb8 [ 92.412495] hidinput_report_event+0x4c/0x78 [ 92.416984] hid_report_raw_event+0xb4/0x418 [ 92.421471] hid_input_report+0x138/0x1a0 [ 92.425697] hid_irq_in+0x180/0x308 [ 92.429394] __usb_hcd_giveback_urb+0x98/0x160 [ 92.434059] usb_giveback_urb_bh+0xb0/0x150 [ 92.438461] process_one_work+0x20c/0x5e8 [ 92.442687] bh_worker+0x1b0/0x218 [ 92.446294] workqueue_softirq_action+0x80/0x98 [ 92.451050] tasklet_hi_action+0x20/0x60 [ 92.455185] handle_softirqs+0x144/0x528 [ 92.459322] __do_softirq+0x1c/0x28 [ 92.463020] ____do_softirq+0x18/0x30 [ 92.466892] call_on_irq_stack+0x30/0x70 [ 92.471030] do_softirq_own_stack+0x24/0x38 [ 92.475429] __irq_exit_rcu+0x100/0x1f8 [ 92.479478] irq_exit_rcu+0x18/0x58 [ 92.483177] el1_interrupt+0x38/0x68 [ 92.486960] el1h_64_irq_handler+0x18/0x28 [ 92.491273] el1h_64_irq+0x6c/0x70 [ 92.494882] default_idle_call+0x84/0x140 [ 92.499107] do_idle+0x22c/0x298 [ 92.502541] cpu_startup_entry+0x3c/0x50 [ 92.506677] rest_init+0x108/0x1a0 [ 92.510287] start_kernel+0x760/0x8c8 [ 92.514160] __primary_switched+0x88/0x98 [ 92.518383]=20 [ 92.519881]=20 [ 92.519881] the dependencies between the lock to be acquired [ 92.519887] and HARDIRQ-irq-unsafe lock: [ 92.531155] -> (&ring->lock){+.-.}-{3:3} { [ 92.535283] HARDIRQ-ON-W at: [ 92.538452] lock_acquire+0x1d4/0x368 [ 92.543821] _raw_spin_lock+0x50/0x70 [ 92.549190] bcmgenet_xmit+0x78/0x860 [ 92.554559] dev_hard_start_xmit+0xc0/0x2d0 [ 92.560458] sch_direct_xmit+0x98/0x1e8 [ 92.566001] __dev_queue_xmit+0x5a0/0x13a8 [ 92.571813] packet_xmit+0xcc/0x150 [ 92.577004] packet_sendmsg+0x8e8/0x1328 [ 92.582637] __sock_sendmsg+0x64/0xc0 [ 92.588006] ____sys_sendmsg+0x270/0x2b0 [ 92.593640] ___sys_sendmsg+0x88/0xf0 [ 92.599009] __sys_sendmsg+0x88/0x100 [ 92.604380] __arm64_sys_sendmsg+0x2c/0x40 [ 92.610188] invoke_syscall+0x50/0x120 [ 92.615644] el0_svc_common.constprop.0+0x48/0xf0 [ 92.622072] do_el0_svc+0x24/0x38 [ 92.627088] el0_svc+0x4c/0x178 [ 92.631929] el0t_64_sync_handler+0xa0/0xe8 [ 92.637827] el0t_64_sync+0x198/0x1a0 [ 92.643195] IN-SOFTIRQ-W at: [ 92.646364] lock_acquire+0x1d4/0x368 [ 92.651733] _raw_spin_lock+0x50/0x70 [ 92.657104] bcmgenet_tx_poll+0x30/0xe8 [ 92.662647] __napi_poll.constprop.0+0x44/0x268 [ 92.668898] net_rx_action+0x320/0x390 [ 92.674355] handle_softirqs+0x144/0x528 [ 92.679987] __do_softirq+0x1c/0x28 [ 92.685178] ____do_softirq+0x18/0x30 [ 92.690549] call_on_irq_stack+0x30/0x70 [ 92.696183] do_softirq_own_stack+0x24/0x38 [ 92.702079] __irq_exit_rcu+0x100/0x1f8 [ 92.707625] irq_exit_rcu+0x18/0x58 [ 92.712818] el0_interrupt+0x60/0x138 [ 92.718195] __el0_irq_handler_common+0x18/0x28 [ 92.724438] el0t_64_irq_handler+0x10/0x20 [ 92.730254] el0t_64_irq+0x198/0x1a0 [ 92.735529] INITIAL USE at: [ 92.738608] lock_acquire+0x1d4/0x368 [ 92.743890] _raw_spin_lock+0x50/0x70 [ 92.749171] bcmgenet_xmit+0x78/0x860 [ 92.754452] dev_hard_start_xmit+0xc0/0x2d0 [ 92.760262] sch_direct_xmit+0x98/0x1e8 [ 92.765720] __dev_queue_xmit+0x5a0/0x13a8 [ 92.771440] packet_xmit+0xcc/0x150 [ 92.776552] packet_sendmsg+0x8e8/0x1328 [ 92.782091] __sock_sendmsg+0x64/0xc0 [ 92.787374] ____sys_sendmsg+0x270/0x2b0 [ 92.792918] ___sys_sendmsg+0x88/0xf0 [ 92.798198] __sys_sendmsg+0x88/0x100 [ 92.803479] __arm64_sys_sendmsg+0x2c/0x40 [ 92.809201] invoke_syscall+0x50/0x120 [ 92.814570] el0_svc_common.constprop.0+0x48/0xf0 [ 92.820908] do_el0_svc+0x24/0x38 [ 92.825837] el0_svc+0x4c/0x178 [ 92.830591] el0t_64_sync_handler+0xa0/0xe8 [ 92.836399] el0t_64_sync+0x198/0x1a0 [ 92.841681] } [ 92.843353] ... key at: [] __key.6+0x0/0x10 [ 92.849690] ... acquired at: [ 92.852685] lock_acquire+0x1d4/0x368 [ 92.856555] _raw_spin_lock+0x50/0x70 [ 92.860428] bcmgenet_xmit+0x78/0x860 [ 92.864301] netpoll_start_xmit+0x118/0x1b0 [ 92.868702] netpoll_send_skb+0x3a8/0x4b0 [ 92.872928] netpoll_send_udp+0x2ac/0x418 [ 92.877153] write_msg+0x124/0x1b0 [netconsole] [ 92.881907] console_flush_all+0x2e4/0x4a8 [ 92.886220] console_unlock+0x84/0x188 [ 92.890181] vprintk_emit+0x24c/0x450 [ 92.894052] vprintk_default+0x40/0x58 [ 92.898013] vprintk+0x3c/0x80 [ 92.901270] _printk+0x64/0x98 [ 92.904527] __handle_sysrq+0x1ec/0x308 [ 92.908576] sysrq_filter+0xcc/0x518 [ 92.912363] input_handle_events_filter+0x58/0xc0 [ 92.917289] input_pass_values+0x1fc/0x2e8 [ 92.921604] input_handle_event+0x450/0x558 [ 92.926003] input_event+0x6c/0xb8 [ 92.929612] hidinput_report_event+0x4c/0x78 [ 92.934103] hid_report_raw_event+0xb4/0x418 [ 92.938592] hid_input_report+0x138/0x1a0 [ 92.942816] hid_irq_in+0x180/0x308 [ 92.946513] __usb_hcd_giveback_urb+0x98/0x160 [ 92.951179] usb_giveback_urb_bh+0xb0/0x150 [ 92.955580] process_one_work+0x20c/0x5e8 [ 92.959803] bh_worker+0x1b0/0x218 [ 92.963413] workqueue_softirq_action+0x80/0x98 [ 92.968166] tasklet_hi_action+0x20/0x60 [ 92.972304] handle_softirqs+0x144/0x528 [ 92.976438] __do_softirq+0x1c/0x28 [ 92.980142] ____do_softirq+0x18/0x30 [ 92.984008] call_on_irq_stack+0x30/0x70 [ 92.988145] do_softirq_own_stack+0x24/0x38 [ 92.992547] __irq_exit_rcu+0x100/0x1f8 [ 92.996595] irq_exit_rcu+0x18/0x58 [ 93.000293] el1_interrupt+0x38/0x68 [ 93.004077] el1h_64_irq_handler+0x18/0x28 [ 93.008390] el1h_64_irq+0x6c/0x70 [ 93.012005] default_idle_call+0x84/0x140 [ 93.016230] do_idle+0x22c/0x298 [ 93.019657] cpu_startup_entry+0x3c/0x50 [ 93.023794] rest_init+0x108/0x1a0 [ 93.027403] start_kernel+0x760/0x8c8 [ 93.031274] __primary_switched+0x88/0x98 [ 93.035500]=20 [ 93.036995]=20 [ 93.036995] stack backtrace: [ 93.041406] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G C = 6.17.0-rc2-v8-lockdep #529 PREEMPTLAZY=20 [ 93.052226] Tainted: [C]=3DCRAP [ 93.055218] Hardware name: Raspberry Pi 4 Model B Rev 1.4 (DT) [ 93.061114] Call trace: [ 93.063580] show_stack+0x20/0x38 (C) [ 93.067276] dump_stack_lvl+0x90/0xd0 [ 93.070973] dump_stack+0x18/0x28 [ 93.074317] check_irq_usage+0x720/0x9e8 [ 93.078277] __lock_acquire+0x1388/0x1fa0 [ 93.082327] lock_acquire+0x1d4/0x368 [ 93.086023] _raw_spin_lock+0x50/0x70 [ 93.089720] bcmgenet_xmit+0x78/0x860 [ 93.093418] netpoll_start_xmit+0x118/0x1b0 [ 93.097642] netpoll_send_skb+0x3a8/0x4b0 [ 93.101691] netpoll_send_udp+0x2ac/0x418 [ 93.105741] write_msg+0x124/0x1b0 [netconsole] [ 93.110320] console_flush_all+0x2e4/0x4a8 [ 93.114455] console_unlock+0x84/0x188 [ 93.118240] vprintk_emit+0x24c/0x450 [ 93.121935] vprintk_default+0x40/0x58 [ 93.125723] vprintk+0x3c/0x80 [ 93.128802] _printk+0x64/0x98 [ 93.131882] __handle_sysrq+0x1ec/0x308 [ 93.135756] sysrq_filter+0xcc/0x518 [ 93.139363] input_handle_events_filter+0x58/0xc0 [ 93.144118] input_pass_values+0x1fc/0x2e8 [ 93.148255] input_handle_event+0x450/0x558 [ 93.152478] input_event+0x6c/0xb8 [ 93.155912] hidinput_report_event+0x4c/0x78 [ 93.160225] hid_report_raw_event+0xb4/0x418 [ 93.164539] hid_input_report+0x138/0x1a0 [ 93.168586] hid_irq_in+0x180/0x308 [ 93.172107] __usb_hcd_giveback_urb+0x98/0x160 [ 93.176596] usb_giveback_urb_bh+0xb0/0x150 [ 93.180822] process_one_work+0x20c/0x5e8 [ 93.184870] bh_worker+0x1b0/0x218 [ 93.188303] workqueue_softirq_action+0x80/0x98 [ 93.192881] tasklet_hi_action+0x20/0x60 [ 93.196841] handle_softirqs+0x144/0x528 [ 93.200808] __do_softirq+0x1c/0x28 [ 93.204325] ____do_softirq+0x18/0x30 [ 93.208019] call_on_irq_stack+0x30/0x70 [ 93.211983] do_softirq_own_stack+0x24/0x38 [ 93.216205] __irq_exit_rcu+0x100/0x1f8 [ 93.220078] irq_exit_rcu+0x18/0x58 [ 93.223600] el1_interrupt+0x38/0x68 [ 93.227208] el1h_64_irq_handler+0x18/0x28 [ 93.231345] el1h_64_irq+0x6c/0x70 [ 93.234778] default_idle_call+0x84/0x140 (P) [ 93.239179] do_idle+0x22c/0x298 [ 93.242436] cpu_startup_entry+0x3c/0x50 [ 93.246403] rest_init+0x108/0x1a0 [ 93.249830] start_kernel+0x760/0x8c8 [ 93.253525] __primary_switched+0x88/0x98