From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 13905EB64DC for ; Mon, 10 Jul 2023 07:22:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230034AbjGJHWX (ORCPT ); Mon, 10 Jul 2023 03:22:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33614 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230049AbjGJHWT (ORCPT ); Mon, 10 Jul 2023 03:22:19 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 06229EB for ; Mon, 10 Jul 2023 00:21:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1688973691; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=jEfNU3mvKWLTx66KLJD7IWl55ixvFZkA0OwvpmJNf9U=; b=JgOdHE3qIh/76z+1L8P3Flr+mr0Y2bAIa0bgGxJ2FDd+2tD8jAfsZH2NyAo4Kkslw0269m SDmZ5LEuVPO37S4xMJxeV7iPQ0WLXYlATL86UnrYcREN1hnjQTzwJ3c25mveOr8CTUleMY s3UxwvAgYt9nhSs9xAAI9ZAC1SwsYtQ= Received: from mail-qk1-f197.google.com (mail-qk1-f197.google.com [209.85.222.197]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-634-k9EclFEJO5WDU9nlY3T63Q-1; Mon, 10 Jul 2023 03:21:30 -0400 X-MC-Unique: k9EclFEJO5WDU9nlY3T63Q-1 Received: by mail-qk1-f197.google.com with SMTP id af79cd13be357-7659c6caeaeso555492885a.3 for ; Mon, 10 Jul 2023 00:21:30 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1688973690; x=1691565690; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=jEfNU3mvKWLTx66KLJD7IWl55ixvFZkA0OwvpmJNf9U=; b=HvcxEyB2Gho9F6DRXUJNDNXYZkB08jxUmpH6p1rKtCzR8TaVO/PGXhjhR8kq9l9Kph TdZQLsbrmeeDbBEXF+QczV3+wjXnncZY0WayXPnyffjDDQMBUtHwKFcTTxfwAKsUVI9f nSQZuExc6yd9wmNt6NxBwNCDLzQr4s9Z/KuAxERIbLYty6vKa5MUPoc83pQL4gOhgPcD 0tvZ9mqle4n7i/L/d/eVBCY4YClpGaYu7aMSm/2iV0RlbH+E9cECERAHFjcBVArT5Sbd B6B7UZ9hAmei/3N7QJqO+P2IHFSHyJGyfkBsTP+VtOc88cK9gqHFEfqgkIOKfR7ztvQT wZ9w== X-Gm-Message-State: ABy/qLadmWyx6kWZ8Z75oqj/zLI3BAsiXT2jNzxJV0Ehld1k+m67Dnt9 SFWtX5VMKPabaQ/kSLFbgKQvtMORDFAkTvICd4++lTEwCjE51bK3O8nKLI3TjYkV9ju79gH2Ue/ yFvCVk+yVBE7phCbh/7uysuwAu6E= X-Received: by 2002:a0c:df90:0:b0:636:b633:9fd6 with SMTP id w16-20020a0cdf90000000b00636b6339fd6mr10623075qvl.17.1688973689957; Mon, 10 Jul 2023 00:21:29 -0700 (PDT) X-Google-Smtp-Source: APBJJlFNfYcRBHjYhKj1QikGAcGRp5e+PzgD9u/dm5HHUeQoUMkiA2Pt/L3p+zDXfFFfx2A0gdEsTw== X-Received: by 2002:a0c:df90:0:b0:636:b633:9fd6 with SMTP id w16-20020a0cdf90000000b00636b6339fd6mr10623066qvl.17.1688973689613; Mon, 10 Jul 2023 00:21:29 -0700 (PDT) Received: from localhost.localdomain ([176.206.37.158]) by smtp.gmail.com with ESMTPSA id h11-20020a0cf40b000000b0062fffa42cc5sm5263903qvl.79.2023.07.10.00.21.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 Jul 2023 00:21:28 -0700 (PDT) Date: Mon, 10 Jul 2023 09:21:25 +0200 From: Juri Lelli To: Sebastian Andrzej Siewior Cc: linux-rt-users , LKML Subject: Re: [RT] i915 sleeping function from atomic in gen6_reset_engines() Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-rt-users@vger.kernel.org Hi! On 23/01/23 17:04, Juri Lelli wrote: > Hi, > > I've just noticed the following while testing v6.2-rc3-rt1. I'm still seeing the following on v6.4-rt6. I believe 20211006164628.s2mtsdd2jdbfyf7g@linutronix.de should cure it, but I don't think it did go anywhere? > # lspci -k | grep -EA3 'VGA|3D|Display' > 00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3 Processor Integrated Graphics Controller (rev 06) > DeviceName: Onboard IGD > Subsystem: Dell Device 0620 > Kernel driver in use: i915 > > --- > > [ 11.960670] BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:46 > [ 11.960672] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 429, name: systemd-udevd > [ 11.960673] preempt_count: 1, expected: 0 > [ 11.960674] RCU nest depth: 0, expected: 0 > [ 11.960674] 2 locks held by systemd-udevd/429: > [ 11.960675] #0: ffff8e1f022b71b0 (&dev->mutex){....}-{3:3}, at: __driver_attach+0xcb/0x1d0 > [ 11.960684] #1: ffff8e1e27d32ed8 (&uncore->lock){+.+.}-{2:2}, at: gen6_reset_engines+0x1b/0x50 [i915] > [ 11.960897] Preemption disabled at: > [ 11.960898] [] __intel_gt_reset+0x92/0x100 [i915] > [ 11.961024] CPU: 3 PID: 429 Comm: systemd-udevd Not tainted 6.2.0-rc3-rt1 #1 > [ 11.961025] Hardware name: Dell Inc. PowerEdge T20/0VD5HY, BIOS A03 11/25/2013 > [ 11.961026] Call Trace: > [ 11.961027] > [ 11.961029] ? __intel_gt_reset+0x92/0x100 [i915] > [ 11.961155] dump_stack_lvl+0x57/0x81 > [ 11.961160] __might_resched.cold+0xf4/0x12f > [ 11.961165] rt_spin_lock+0x4a/0xe0 > [ 11.961169] ? gen6_reset_engines+0x1b/0x50 [i915] > [ 11.961294] ? __pfx_gen6_reset_engines+0x10/0x10 [i915] > [ 11.961453] gen6_reset_engines+0x1b/0x50 [i915] > [ 11.961579] __intel_gt_reset+0xa0/0x100 [i915] > [ 11.961708] i915_driver_mmio_probe+0x126/0x220 [i915] > [ 11.961815] ? intel_gt_probe_all+0x70/0x280 [i915] > [ 11.961939] i915_driver_probe+0xd4/0x3c0 [i915] > [ 11.962047] ? i915_pci_probe+0x87/0x1b0 [i915] > [ 11.962160] local_pci_probe+0x45/0x80 > [ 11.962167] pci_call_probe+0x56/0x170 > [ 11.962173] pci_device_probe+0x79/0xf0 > [ 11.962175] ? driver_sysfs_add+0x73/0xd0 > [ 11.962179] really_probe+0xe1/0x390 > [ 11.962181] ? pm_runtime_barrier+0x50/0x90 > [ 11.962187] __driver_probe_device+0x78/0x180 > [ 11.962191] driver_probe_device+0x1e/0x90 > [ 11.962195] __driver_attach+0xd6/0x1d0 > [ 11.962197] ? __pfx___driver_attach+0x10/0x10 > [ 11.962201] bus_for_each_dev+0x7b/0xc0 > [ 11.962206] bus_add_driver+0x1b2/0x200 > [ 11.962212] driver_register+0x8f/0xf0 > [ 11.962215] i915_init+0x20/0x80 [i915] > [ 11.962337] ? __pfx_init_module+0x10/0x10 [i915] > [ 11.962461] do_one_initcall+0x47/0x190 > [ 11.962467] ? rcu_read_lock_sched_held+0x43/0x80 > [ 11.962471] ? trace_kmalloc+0x3c/0x160 > [ 11.962473] ? kmalloc_trace+0x44/0x60 > [ 11.962476] do_init_module+0x4c/0x200 > [ 11.962480] __do_sys_finit_module+0xb4/0x130 > [ 11.962497] do_syscall_64+0x5c/0x90 > [ 11.962505] ? do_syscall_64+0x69/0x90 > [ 11.962507] ? lockdep_hardirqs_on+0x79/0x100 > [ 11.962511] ? do_syscall_64+0x69/0x90 > [ 11.962513] ? do_syscall_64+0x69/0x90 > [ 11.962515] ? lockdep_hardirqs_on+0x79/0x100 > [ 11.962518] ? do_syscall_64+0x69/0x90 > [ 11.962520] ? lockdep_hardirqs_on+0x79/0x100 > [ 11.962523] entry_SYSCALL_64_after_hwframe+0x72/0xdc > [ 11.962526] RIP: 0033:0x7fa35d020e5d > [ 11.962529] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 > d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 > 01 c3 48 8b 0d 93 af 1b 00 f7 d8 64 89 01 48 > [ 11.962530] RSP: 002b:00007ffd62f23a78 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 > [ 11.962532] RAX: ffffffffffffffda RBX: 000056058a1429e0 RCX: 00007fa35d020e5d > [ 11.962533] RDX: 0000000000000000 RSI: 00007fa35d25232c RDI: 0000000000000017 > [ 11.962534] RBP: 0000000000020000 R08: 0000000000000000 R09: 0000000000000002 > [ 11.962534] R10: 0000000000000017 R11: 0000000000000246 R12: 00007fa35d25232c > [ 11.962535] R13: 000056058a147360 R14: 0000000000000007 R15: 000056058a12b790 > [ 11.962548] > [ 11.964024] i915 0000:00:02.0: vgaarb: deactivate vga console > [ 11.974095] Console: switching to colour dummy device 80x25 > [ 11.981308] i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem > [ 12.041808] [drm] Initialized i915 1.6.0 20201103 for 0000:00:02.0 on minor 0 > > --- Thanks, Juri