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[23.128.96.18]) by mx.google.com with ESMTP id dp15si9049842ejc.221.2021.08.28.02.43.50; Sat, 28 Aug 2021 02:44:18 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@gmx.net header.s=badeba3b8450 header.b="hieB/koU"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=gmx.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233637AbhH1Jjr (ORCPT + 99 others); Sat, 28 Aug 2021 05:39:47 -0400 Received: from mout.gmx.net ([212.227.17.22]:53105 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230444AbhH1Jjr (ORCPT ); Sat, 28 Aug 2021 05:39:47 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1630143530; bh=/K2AIHPNi1ELUniy3IyZBfz60CCRq0L1+Owm4YQ9W4w=; h=X-UI-Sender-Class:Subject:From:To:Cc:Date; b=hieB/koUvkqLKt39cVlxsHI2b7pMPDfZ6fx5tREEPzXeg6ZKKm85BTjJReG9Ru5oa 1m6WnZd4+12ytFbMVSLpmDQoubIRGxZSFBe4OT/gB+FFrFTd/jCw6wRlmEFB8r5Gk9 ZwSyhwWHllPK4HnHRH/IaESQPAu/WTgROQJv+BVU= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from homer.fritz.box ([185.191.216.248]) by mail.gmx.net (mrgmx104 [212.227.17.168]) with ESMTPSA (Nemesis) id 1MHG8m-1mFZD02zHk-00DIQ9; Sat, 28 Aug 2021 11:38:50 +0200 Message-ID: Subject: dri, nouveau: BUG: KASAN: use-after-free in dma_fence_signal_timestamp_locked+0x399/0x430 From: Mike Galbraith To: lkml Cc: Ben Skeggs , dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org Date: Sat, 28 Aug 2021 11:38:49 +0200 Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.41.2 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:EqPrmtaK9Qdqi20jMWZ22Wxje/Z3WbHO2u3Xmbte/1rfzDVzT66 vzZ/OZS+keznbpdnCXySXp5Xs8tgYUT6H+fSfqa5Q8AmYc/lClfJE4QwyK4Hm4I2HORFJEG l0tB7s9FW3yLbJbmmCtZVytB8yaxA/tz/lh8qj3HDjsYtdX01Xt6xxZipjpCMlDQ9T+fca+ 58HduUfx9Fex54b4ap33A== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:IAhhfZe2M3k=:bUXKk/+3QMFq6+3MjozwZs UZFI4l+T5Xpdw8q25CxROIeWS/u/AavYfr4HUBtcFP0z6CcfbLi/8/kU26OOwBJsoZJmC8caj HpE8jsgzmDc5nw5vAL5h5IqSGMsaPx/RpbKQbyPDf0yiC3vNWoAA7IaJcvgIQnD4jD2Am/TQa Rq6Xt1ZWKuzdZRmYizPKSQb9L/CIJSZmFLhXTEb7PibA7WiSMTVZxrMm5xYP6tNwuVcSDIj48 M5eVlGBk4f7dvZtrPO7GxUSTpXuBo8qj0DoANJ2xDEYEiIueufM2MyQT1fZOkCLmw0PyviM3r P005vq1na5/l0tL/e1ro4KhdBNuNv99Hq5HWZvvLR61/dEQeu1p3lAB+KaHDUsY7To+WOFqZp H/HaGc46DmalOrO7vRzPlTXqVU9+797rYrtQCjVx8nbqbdCzpWZ69WZE7x2NJ5jkukTMfbgyu KOg3q01VHQyolOaj7wNYwQEvEgOdbwSmffsppJDx1MzX2SMI/ZOw2C/tENSDSn1jCRlAGv+LZ Hza1+AdMCcTPnWHqnc2Qc7H7slct+mgHP4NJrCMEPqGy05+xWTDopBtTmT05D/SBoReK88Vuq 4Lhwp88Ag41dhwHgJlsQN4xunkhesz+JH5GsK4sYRDjswrlfnX+eM2csH0uyM0vVvvIF6geUw uAYvX+S018mK4Pr9W8Da8RrulA6beboq8ZCxEQMxJgxoRhIzgArN9OAGTGazZ78CY6KkR5ppA 56AzsxN+uCjSuze0QJZDEQ/ExuKlVPu6Zy5Rkr2kQFsky3PTn0KG1ZQGRTK+teZa+FDcm1KNq wr7l3Ix3PznVXyAHZMjTjydUHQ07Z9c6kT90AvmYBL+YBx99LVw8wpXZ13F3p1211JcGHkRMV h6/hYlo6D0EvmO0tIe6IeaOVOPqP4+PPypwQUowo4Xcw/fDBvMpPTEpaX5nuL8F+1yxdKkbiI TAT1snHYOycE/6cWbgjo33QN8SD/xTvsITwQ5oNgXRPoIZ0zUTebcWL7dL5/lMswhjobJnfzm ejQVPuPMMGwS5sx/44gWlWarZLdkEXJ2CXydGC9AVLdXvVNKzgOg6QqBz6+oE3bhW5wSLhdHi myWNWizQUWnaCe4xJssiaKRjd7F3tAiYHN8 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Enabling kasan or kcsan in my GTX-980 equipped box will in fairly short order result in emission of a use-after-free detection gripe (no access assert in kcsan case.. same same), immediately followed by a small mushroom cloud as the kernel attempts to access the twilight zone. The below (brought to you by me forgetting to boot nomodeset despite knowing full well that nouveau WILL muck up any testing with either of these tools:) is x86-tip, with lockdep and kasan enabled. Branch isn't really irrelevant, it explodes just as readily in master. [ 604.071721] =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=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D [ 604.072204] BUG: KASAN: use-after-free in dma_fence_signal_timestamp_loc= ked+0x399/0x430 [ 604.072269] Read of size 8 at addr ffff8881fffa0b28 by task swapper/1/0 [ 604.072330]=20 [ 604.072351] CPU: 1 PID: 0 Comm: swapper/1 Kdump: loaded Tainted: G = E 5.14.0.g29fb75d-tip_debug #19 [ 604.072439] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/= 23/2013 [ 604.072502] Call Trace: [ 604.072530] [ 604.072563] dump_stack_lvl+0x45/0x59 [ 604.072605] print_address_description.constprop.0+0x1f/0x140 [ 604.072650] ? dma_fence_signal_timestamp_locked+0x399/0x430 [ 604.072708] kasan_report.cold+0x83/0xdf [ 604.072761] ? dma_fence_signal_timestamp_locked+0x399/0x430 [ 604.072820] dma_fence_signal_timestamp_locked+0x399/0x430 [ 604.072865] ? perf_trace_dma_fence+0x940/0x940 [ 604.072916] ? ktime_get+0x64/0x160 [ 604.072955] ? ktime_get+0x99/0x160 [ 604.072981] nouveau_fence_signal+0x11/0x210 [nouveau] [ 604.073161] nouveau_fence_wait_uevent_handler+0x116/0x220 [nouveau] [ 604.073333] ? __lock_release+0xec/0x4e0 [ 604.073367] nvif_notify+0x276/0x4f0 [nouveau] [ 604.073490] ? nvif_notify_get+0x170/0x170 [nouveau] [ 604.073623] ? nvkm_notify_send+0x195/0x510 [nouveau] [ 604.073760] ? do_raw_spin_unlock+0x55/0x1f0 [ 604.073814] nvkm_notify_send+0x238/0x510 [nouveau] [ 604.073903] ? do_raw_spin_unlock+0x55/0x1f0 [ 604.073934] nvkm_event_send+0x1e3/0x2d0 [nouveau] [ 604.074069] ? validate_chain+0x124/0xd50 [ 604.074096] nvkm_fifo_uevent+0x60/0x70 [nouveau] [ 604.074257] ? nvkm_fifo_cevent+0x20/0x20 [nouveau] [ 604.074367] ? check_prev_add+0x20c0/0x20c0 [ 604.074409] ? mark_lock+0xc3/0xac0 [ 604.074448] gk104_fifo_intr+0x627/0x960 [nouveau] [ 604.074585] nvkm_mc_intr+0x407/0x5e0 [nouveau] [ 604.074715] ? __lock_acquire+0xad9/0x17b0 [ 604.074765] nvkm_pci_intr+0x12b/0x190 [nouveau] [ 604.074912] ? nvkm_pci_init+0x1d0/0x1d0 [nouveau] [ 604.075076] ? nvkm_pci_init+0x1d0/0x1d0 [nouveau] [ 604.075202] __handle_irq_event_percpu+0x24a/0x640 [ 604.075240] handle_irq_event+0xef/0x230 [ 604.075285] ? handle_irq_event_percpu+0x100/0x100 [ 604.075348] handle_edge_irq+0x20d/0xb70 [ 604.075408] __common_interrupt+0x94/0x1e0 [ 604.075459] common_interrupt+0x9f/0xd0 [ 604.075503] [ 604.075533] asm_common_interrupt+0x1e/0x40 [ 604.075576] RIP: 0010:cpuidle_enter_state+0x1f8/0x8d0 [ 604.075629] Code: 00 41 8b 77 04 bf ff ff ff ff e8 43 ef ff ff 31 ff e8 = 0c 15 fe fe 80 7c 24 08 00 0f 85 9e 01 00 00 e8 bc aa 22 ff fb 45 85 e4 <0f= > 88 8c 02 00 00 49 63 ec 48 8d 44 6d 00 48 8d 44 85 00 48 8d 7c [ 604.075781] RSP: 0018:ffff8881009bfdc8 EFLAGS: 00000206 [ 604.075835] RAX: 0000000000701531 RBX: ffffffff83a34520 RCX: 1ffffffff07= 8ba21 [ 604.075899] RDX: 0000000000000000 RSI: ffffffff82e83020 RDI: ffffffff82f= a1660 [ 604.075962] RBP: 0000000000000003 R08: 0000000000000001 R09: ffffffff83c= 5f617 [ 604.076025] R10: fffffbfff078bec2 R11: 0000000000000001 R12: 00000000000= 00003 [ 604.076088] R13: ffff8883ce8c564c R14: 0000008ca56ecfa2 R15: ffff8883ce8= c5648 [ 604.076179] ? cpuidle_enter_state+0x1f4/0x8d0 [ 604.076238] cpuidle_enter+0x4a/0xa0 [ 604.076283] cpuidle_idle_call+0x255/0x3c0 [ 604.076328] ? arch_cpu_idle_exit+0x40/0x40 [ 604.076372] ? tsc_verify_tsc_adjust+0x9c/0x2e0 [ 604.076418] ? lockdep_hardirqs_off+0x90/0xd0 [ 604.076472] do_idle+0xd7/0x140 [ 604.076513] cpu_startup_entry+0x19/0x20 [ 604.076554] start_secondary+0x250/0x2f0 [ 604.076598] ? set_cpu_sibling_map+0x1c20/0x1c20 [ 604.076657] secondary_startup_64_no_verify+0xb0/0xbb [ 604.076742]=20 [ 604.076762] Allocated by task 2004: [ 604.076796] kasan_save_stack+0x1b/0x40 [ 604.076836] __kasan_kmalloc+0x7c/0x90 [ 604.076873] nouveau_gem_object_close+0x300/0x7f0 [nouveau] [ 604.077060] drm_gem_object_release_handle+0x69/0xf0 [drm] [ 604.077171] drm_gem_handle_delete+0x5b/0xa0 [drm] [ 604.077260] drm_ioctl_kernel+0x1a7/0x240 [drm] [ 604.077349] drm_ioctl+0x400/0x8b0 [drm] [ 604.077453] nouveau_drm_ioctl+0xec/0x230 [nouveau] [ 604.077630] __x64_sys_ioctl+0x11c/0x170 [ 604.077671] do_syscall_64+0x38/0x90 [ 604.077707] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 604.077754]=20 [ 604.077772] Freed by task 4941: [ 604.077803] kasan_save_stack+0x1b/0x40 [ 604.077840] kasan_set_track+0x1c/0x30 [ 604.077877] kasan_set_free_info+0x20/0x30 [ 604.077917] __kasan_slab_free+0xec/0x130 [ 604.077955] slab_free_freelist_hook+0x90/0x1a0 [ 604.077999] kfree+0xcc/0x510 [ 604.078031] nouveau_gem_object_delete_work+0x7f/0xa0 [nouveau] [ 604.078215] nouveau_cli_work+0x1ec/0x330 [nouveau] [ 604.078390] process_one_work+0x89c/0x14d0 [ 604.078431] worker_thread+0x57d/0x1310 [ 604.078468] kthread+0x335/0x400 [ 604.078501] ret_from_fork+0x1f/0x30 [ 604.078537]=20 [ 604.078555] The buggy address belongs to the object at ffff8881fffa0b00 which belongs to the cache kmalloc-96 of size 96 [ 604.078654] The buggy address is located 40 bytes inside of 96-byte region [ffff8881fffa0b00, ffff8881fffa0b60) [ 604.078747] The buggy address belongs to the page: [ 604.078790] page:000000005085aa1b refcount:1 mapcount:0 mapping:00000000= 00000000 index:0x0 pfn:0x1fffa0 [ 604.078868] flags: 0x2ffe00000000200(slab|node=3D0|zone=3D2|lastcpupid= =3D0x7ff) [ 604.078931] raw: 02ffe00000000200 0000000000000000 dead000000000122 ffff= 888100042780 [ 604.078996] raw: 0000000000000000 0000000000200020 00000001ffffffff 0000= 000000000000 [ 604.079059] page dumped because: kasan: bad access detected [ 604.079107]=20 [ 604.079125] Memory state around the buggy address: [ 604.079168] ffff8881fffa0a00: fa fb fb fb fb fb fb fb fb fb fb fb fc fc= fc fc [ 604.079238] ffff8881fffa0a80: fa fb fb fb fb fb fb fb fb fb fb fb fc fc= fc fc [ 604.079299] >ffff8881fffa0b00: fa fb fb fb fb fb fb fb fb fb fb fb fc fc= fc fc [ 604.079360] ^ [ 604.079401] ffff8881fffa0b80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc= fc fc [ 604.079480] ffff8881fffa0c00: fa fb fb fb fb fb fb fb fb fb fb fb fc fc= fc fc [ 604.079553] =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=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D [ 604.079631] Disabling lock debugging due to kernel taint [ 604.079653] general protection fault, probably for non-canonical address= 0xaf600177000016b5: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 604.079675] CPU: 1 PID: 0 Comm: swapper/1 Kdump: loaded Tainted: G B = E 5.14.0.g29fb75d-tip_debug #19 [ 604.079696] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/= 23/2013 [ 604.079710] RIP: 0010:queue_work_on+0x2f/0x80 [ 604.079723] Code: 41 56 41 55 49 89 f5 41 54 49 89 d4 55 89 fd 53 9c 58 = fa 25 00 02 00 00 48 89 c3 75 33 be 08 00 00 00 4c 89 e7 e8 c1 dc 5b 00 49 0f ba 2c 24 00 41 be 00 00 00 00 73 1e 48 85 db 74 06 e8 58 [ 604.079752] RSP: 0018:ffff8883ce88fa88 EFLAGS: 00010002 [ 604.079767] RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff811= 90eff [ 604.079781] RDX: 0000000000000001 RSI: 0000000000000008 RDI: af600177000= 016b5 [ 604.079795] RBP: 0000000000000008 R08: 0000000000000001 R09: af600177000= 016bd [ 604.079809] R10: fffffbfff0723948 R11: 0000000000000001 R12: af600177000= 016b5 [ 604.079823] R13: ffff88810005b000 R14: 1ffff11079d11f58 R15: ffff8881fff= a0580 [ 604.079837] FS: 0000000000000000(0000) GS:ffff8883ce880000(0000) knlGS:= 0000000000000000 [ 604.079853] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 604.079866] CR2: 00007fd91d12000b CR3: 000000000782a001 CR4: 00000000001= 706e0 [ 604.079880] Call Trace: [ 604.079888] [ 604.079897] dma_fence_signal_timestamp_locked+0x213/0x430 [ 604.079915] ? perf_trace_dma_fence+0x940/0x940 [ 604.079929] ? ktime_get+0x64/0x160 [ 604.079941] ? ktime_get+0x99/0x160 [ 604.079955] nouveau_fence_signal+0x11/0x210 [nouveau] [ 604.080091] nouveau_fence_wait_uevent_handler+0x116/0x220 [nouveau] [ 604.080248] ? __lock_release+0xec/0x4e0 [ 604.080263] nvif_notify+0x276/0x4f0 [nouveau] [ 604.080398] ? nvif_notify_get+0x170/0x170 [nouveau] [ 604.080533] ? nvkm_notify_send+0x195/0x510 [nouveau] [ 604.080671] ? do_raw_spin_unlock+0x55/0x1f0 [ 604.080684] nvkm_notify_send+0x238/0x510 [nouveau] [ 604.080788] ? do_raw_spin_unlock+0x55/0x1f0 [ 604.080813] nvkm_event_send+0x1e3/0x2d0 [nouveau] [ 604.080926] ? validate_chain+0x124/0xd50 [ 604.080939] nvkm_fifo_uevent+0x60/0x70 [nouveau] [ 604.081080] ? nvkm_fifo_cevent+0x20/0x20 [nouveau] [ 604.081228] ? check_prev_add+0x20c0/0x20c0 [ 604.081239] ? mark_lock+0xc3/0xac0 [ 604.081250] gk104_fifo_intr+0x627/0x960 [nouveau] [ 604.081394] nvkm_mc_intr+0x407/0x5e0 [nouveau] [ 604.081525] ? __lock_acquire+0xad9/0x17b0 [ 604.081539] nvkm_pci_intr+0x12b/0x190 [nouveau] [ 604.081667] ? nvkm_pci_init+0x1d0/0x1d0 [nouveau] [ 604.081793] ? nvkm_pci_init+0x1d0/0x1d0 [nouveau] [ 604.081926] __handle_irq_event_percpu+0x24a/0x640 [ 604.081942] handle_irq_event+0xef/0x230 [ 604.081954] ? handle_irq_event_percpu+0x100/0x100 [ 604.081968] handle_edge_irq+0x20d/0xb70 [ 604.081982] __common_interrupt+0x94/0x1e0 [ 604.081996] common_interrupt+0x9f/0xd0 [ 604.082009] [ 604.082017] asm_common_interrupt+0x1e/0x40 [ 604.082028] RIP: 0010:cpuidle_enter_state+0x1f8/0x8d0 [ 604.082043] Code: 00 41 8b 77 04 bf ff ff ff ff e8 43 ef ff ff 31 ff e8 = 0c 15 fe fe 80 7c 24 08 00 0f 85 9e 01 00 00 e8 bc aa 22 ff fb 45 85 e4 <0f= > 88 8c 02 00 00 49 63 ec 48 8d 44 6d 00 48 8d 44 85 00 48 8d 7c [ 604.082070] RSP: 0018:ffff8881009bfdc8 EFLAGS: 00000206 [ 604.082083] RAX: 0000000000701531 RBX: ffffffff83a34520 RCX: 1ffffffff07= 8ba21 [ 604.082097] RDX: 0000000000000000 RSI: ffffffff82e83020 RDI: ffffffff82f= a1660 [ 604.082110] RBP: 0000000000000003 R08: 0000000000000001 R09: ffffffff83c= 5f617 [ 604.082123] R10: fffffbfff078bec2 R11: 0000000000000001 R12: 00000000000= 00003 [ 604.082137] R13: ffff8883ce8c564c R14: 0000008ca56ecfa2 R15: ffff8883ce8= c5648 [ 604.082157] ? cpuidle_enter_state+0x1f4/0x8d0 [ 604.082172] cpuidle_enter+0x4a/0xa0 [ 604.082185] cpuidle_idle_call+0x255/0x3c0 [ 604.082198] ? arch_cpu_idle_exit+0x40/0x40 [ 604.082210] ? tsc_verify_tsc_adjust+0x9c/0x2e0 [ 604.082222] ? lockdep_hardirqs_off+0x90/0xd0 [ 604.082236] do_idle+0xd7/0x140 [ 604.082248] cpu_startup_entry+0x19/0x20 [ 604.082259] start_secondary+0x250/0x2f0 [ 604.082271] ? set_cpu_sibling_map+0x1c20/0x1c20 [ 604.082286] secondary_startup_64_no_verify+0xb0/0xbb [ 604.082305] Modules linked in: overlay(E) sr_mod(E) cdrom(E) btrfs(E) bl= ake2b_generic(E) xor(E) raid6_pq(E) xfs(E) libcrc32c(E) loop(E) af_packet(E= ) ip6table_mangle(E) ip6table_raw(E) iptable_raw(E) nfnetlink(E) bridge(E) = ebtable_filter(E) stp(E) llc(E) ebtables(E) iscsi_ibft(E) iscsi_boot_sysfs(= E) ip6table_filter(E) ip6_tables(E) rfkill(E) iptable_filter(E) ip_tables(E= ) x_tables(E) bpfilter(E) nls_iso8859_1(E) nls_cp437(E) usblp(E) joydev(E) = intel_rapl_msr(E) intel_rapl_common(E) x86_pkg_temp_thermal(E) intel_powerc= lamp(E) coretemp(E) kvm_intel(E) iTCO_wdt(E) intel_pmc_bxt(E) at24(E) mei_h= dcp(E) regmap_i2c(E) iTCO_vendor_support(E) kvm(E) snd_hda_codec_realtek(E)= snd_hda_codec_hdmi(E) snd_hda_codec_generic(E) ledtrig_audio(E) irqbypass(= E) crct10dif_pclmul(E) crc32_pclmul(E) ghash_clmulni_intel(E) snd_hda_intel= (E) snd_intel_dspcfg(E) aesni_intel(E) crypto_simd(E) cryptd(E) snd_hda_cod= ec(E) r8169(E) snd_hwdep(E) i2c_i801(E) snd_hda_core(E) i2c_smbus(E) pcspkr= (E) realtek(E) snd_pcm(E) [ 604.082429] mdio_devres(E) snd_timer(E) lpc_ich(E) snd(E) libphy(E) mei= _me(E) mfd_core(E) mei(E) soundcore(E) fan(E) thermal(E) intel_smartconnect= (E) sch_fq_codel(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) fus= e(E) configfs(E) sunrpc(E) hid_logitech_hidpp(E) hid_logitech_dj(E) uas(E) = usb_storage(E) hid_generic(E) usbhid(E) nouveau(E) drm_ttm_helper(E) ttm(E)= wmi(E) i2c_algo_bit(E) drm_kms_helper(E) syscopyarea(E) sysfillrect(E) sys= imgblt(E) fb_sys_fops(E) cec(E) rc_core(E) ahci(E) libahci(E) xhci_pci(E) d= rm(E) ehci_pci(E) libata(E) ehci_hcd(E) xhci_hcd(E) usbcore(E) video(E) but= ton(E) sd_mod(E) t10_pi(E) vfat(E) fat(E) virtio_blk(E) virtio_mmio(E) virt= io_ring(E) virtio(E) ext4(E) crc32c_intel(E) crc16(E) mbcache(E) jbd2(E) sg= (E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E= ) scsi_mod(E) msr(E) efivarfs(E) autofs4(E) [ 604.082768] Dumping ftrace buffer: [ 604.082781] (ftrace buffer empty)