From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp1.tecnico.ulisboa.pt (smtp1.tecnico.ulisboa.pt [193.136.128.21]) (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 0AA391FA1 for ; Mon, 16 Jan 2023 12:27:10 +0000 (UTC) Received: from localhost (localhost.localdomain [127.0.0.1]) by smtp1.tecnico.ulisboa.pt (Postfix) with ESMTP id 11F0E6008768; Mon, 16 Jan 2023 12:27:03 +0000 (WET) X-Virus-Scanned: by amavisd-new-2.11.0 (20160426) (Debian) at tecnico.ulisboa.pt Received: from smtp1.tecnico.ulisboa.pt ([127.0.0.1]) by localhost (smtp1.tecnico.ulisboa.pt [127.0.0.1]) (amavisd-new, port 10025) with LMTP id 7cdRpeg_D0dx; Mon, 16 Jan 2023 12:27:00 +0000 (WET) Received: from mail1.tecnico.ulisboa.pt (mail1.ist.utl.pt [IPv6:2001:690:2100:1::b3dd:b9ac]) by smtp1.tecnico.ulisboa.pt (Postfix) with ESMTPS id DB48C6008767; Mon, 16 Jan 2023 12:26:59 +0000 (WET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=tecnico.ulisboa.pt; s=mail; t=1673872020; bh=XkE1A2YnrbrU2WIxkcPZ+PORJqR8hAkePFOr8rxfZuE=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=a8Xo4bkmsvTuqonsY4ekcnc5dvWH3mlZRjabBlWJkbOAWhp3rdDaUNODmHarhe2TH H7Go9Ii3nCMaTd4Sd+q5JKYVxcOiaBrFMkQ2Lf5zBefVAuViUjOY0seSUGsOYEmhfx 7qpXOISRmKIcZZ9Ro8jMZa1ERBnEr5r0BQs6JiUo= Received: from wslaptop (unknown [IPv6:2001:818:dcb5:dc00:d990:b664:f16:4cb2]) (Authenticated sender: ist187313) by mail1.tecnico.ulisboa.pt (Postfix) with ESMTPSA id 4A87C360078; Mon, 16 Jan 2023 12:26:59 +0000 (WET) Date: Mon, 16 Jan 2023 12:24:37 +0000 From: Diogo Ivo To: David Airlie Cc: regressions@lists.linux.dev, bskeggs@redhat.com, dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org Subject: Re: [REGRESSION] GM20B probe fails after commit 2541626cfb79 Message-ID: <20230116122403.upk5ci4mbebw23m7@wslaptop> References: <20221228144914.z7t7a4fdwvbblnak@wslaptop> Precedence: bulk X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Mon, Jan 16, 2023 at 07:45:05AM +1000, David Airlie wrote: > On Thu, Dec 29, 2022 at 12:58 AM Diogo Ivo wrote: > As a quick check can you try changing > > drivers/gpu/drm/nouveau/nvkm/core/firmware.c:nvkm_firmware_mem_target > from NVKM_MEM_TARGET_HOST to NVKM_MEM_TARGET_NCOH ? Hello! Applying this change breaks probing in a different way, with a bad PC=0x0. From a quick look at nvkm_falcon_load_dmem it looks like this could happen due to the .load_dmem() callback not being properly initialized. This is the kernel log I got: [ 2.010601] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [ 2.019436] Mem abort info: [ 2.022273] ESR = 0x0000000086000005 [ 2.026066] EC = 0x21: IABT (current EL), IL = 32 bits [ 2.031429] SET = 0, FnV = 0 [ 2.034528] EA = 0, S1PTW = 0 [ 2.037694] FSC = 0x05: level 1 translation fault [ 2.042572] [0000000000000000] user address but active_mm is swapper [ 2.048961] Internal error: Oops: 0000000086000005 [#1] SMP [ 2.054529] Modules linked in: [ 2.057582] CPU: 0 PID: 36 Comm: kworker/u8:1 Not tainted 6.2.0-rc3+ #2 [ 2.064190] Hardware name: Google Pixel C (DT) [ 2.068628] Workqueue: events_unbound deferred_probe_work_func [ 2.074463] pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 2.081417] pc : 0x0 [ 2.083600] lr : nvkm_falcon_load_dmem+0x58/0x80 [ 2.088218] sp : ffffffc009ddb6f0 [ 2.091526] x29: ffffffc009ddb6f0 x28: ffffff808028a008 x27: ffffff8081e43c38 [ 2.098658] x26: 00000000000000ff x25: ffffff808028a0a0 x24: 0000000000000000 [ 2.105788] x23: ffffff8080c328f8 x22: 000000000000002c x21: 0000000000005fd4 [ 2.112917] x20: ffffffc009ddb76c x19: ffffff8080c328b8 x18: 0000000000000000 [ 2.120047] x17: 2e74696e695f646f x16: 6874656d5f77732f x15: 0000000000000000 [ 2.127176] x14: 0000000002f546c2 x13: 0000000000000000 x12: 00000000000001ce [ 2.134306] x11: 0000000000000001 x10: 0000000000000a90 x9 : ffffffc009ddb600 [ 2.141436] x8 : ffffff80803d19f0 x7 : ffffff80bf971180 x6 : 00000000000001b9 [ 2.148565] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 000000000000002c [ 2.155693] x2 : 0000000000005fd4 x1 : ffffffc009ddb76c x0 : ffffff8080c328b8 [ 2.162822] Call trace: [ 2.165264] 0x0 [ 2.167099] gm20b_pmu_init+0x78/0xb4 [ 2.170762] nvkm_pmu_init+0x20/0x34 [ 2.174334] nvkm_subdev_init_+0x60/0x12c [ 2.178339] nvkm_subdev_init+0x60/0xa0 [ 2.182171] nvkm_device_init+0x14c/0x2a0 [ 2.186178] nvkm_udevice_init+0x60/0x9c [ 2.190097] nvkm_object_init+0x48/0x1b0 [ 2.194013] nvkm_ioctl_new+0x168/0x254 [ 2.197843] nvkm_ioctl+0xd0/0x220 [ 2.201239] nvkm_client_ioctl+0x10/0x1c [ 2.205160] nvif_object_ctor+0xf4/0x22c [ 2.209079] nvif_device_ctor+0x28/0x70 [ 2.212910] nouveau_cli_init+0x150/0x590 [ 2.216916] nouveau_drm_device_init+0x60/0x2a0 [ 2.221442] nouveau_platform_device_create+0x90/0xd0 [ 2.226489] nouveau_platform_probe+0x3c/0x9c [ 2.230841] platform_probe+0x68/0xc0 [ 2.234500] really_probe+0xbc/0x2dc [ 2.238070] __driver_probe_device+0x78/0xe0 [ 2.242334] driver_probe_device+0xd8/0x160 [ 2.246511] __device_attach_driver+0xb8/0x134 [ 2.250948] bus_for_each_drv+0x78/0xd0 [ 2.254782] __device_attach+0x9c/0x1a0 [ 2.258612] device_initial_probe+0x14/0x20 [ 2.262789] bus_probe_device+0x98/0xa0 [ 2.266619] deferred_probe_work_func+0x88/0xc0 [ 2.271142] process_one_work+0x204/0x40c [ 2.275150] worker_thread+0x230/0x450 [ 2.278894] kthread+0xc8/0xcc [ 2.281946] ret_from_fork+0x10/0x20 [ 2.285525] Code: bad PC value [ 2.288576] ---[ end trace 0000000000000000 ]--- Diogo 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B30ACC54EBE for ; Mon, 16 Jan 2023 12:27:08 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C8DDF10E3F5; Mon, 16 Jan 2023 12:27:07 +0000 (UTC) Received: from smtp1.tecnico.ulisboa.pt (smtp1.tecnico.ulisboa.pt [193.136.128.21]) by gabe.freedesktop.org (Postfix) with ESMTPS id 75AF310E3F5; Mon, 16 Jan 2023 12:27:05 +0000 (UTC) Received: from localhost (localhost.localdomain [127.0.0.1]) by smtp1.tecnico.ulisboa.pt (Postfix) with ESMTP id 11F0E6008768; Mon, 16 Jan 2023 12:27:03 +0000 (WET) X-Virus-Scanned: by amavisd-new-2.11.0 (20160426) (Debian) at tecnico.ulisboa.pt Received: from smtp1.tecnico.ulisboa.pt ([127.0.0.1]) by localhost (smtp1.tecnico.ulisboa.pt [127.0.0.1]) (amavisd-new, port 10025) with LMTP id 7cdRpeg_D0dx; Mon, 16 Jan 2023 12:27:00 +0000 (WET) Received: from mail1.tecnico.ulisboa.pt (mail1.ist.utl.pt [IPv6:2001:690:2100:1::b3dd:b9ac]) by smtp1.tecnico.ulisboa.pt (Postfix) with ESMTPS id DB48C6008767; Mon, 16 Jan 2023 12:26:59 +0000 (WET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=tecnico.ulisboa.pt; s=mail; t=1673872020; bh=XkE1A2YnrbrU2WIxkcPZ+PORJqR8hAkePFOr8rxfZuE=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=a8Xo4bkmsvTuqonsY4ekcnc5dvWH3mlZRjabBlWJkbOAWhp3rdDaUNODmHarhe2TH H7Go9Ii3nCMaTd4Sd+q5JKYVxcOiaBrFMkQ2Lf5zBefVAuViUjOY0seSUGsOYEmhfx 7qpXOISRmKIcZZ9Ro8jMZa1ERBnEr5r0BQs6JiUo= Received: from wslaptop (unknown [IPv6:2001:818:dcb5:dc00:d990:b664:f16:4cb2]) (Authenticated sender: ist187313) by mail1.tecnico.ulisboa.pt (Postfix) with ESMTPSA id 4A87C360078; Mon, 16 Jan 2023 12:26:59 +0000 (WET) Date: Mon, 16 Jan 2023 12:24:37 +0000 From: Diogo Ivo To: David Airlie Subject: Re: [REGRESSION] GM20B probe fails after commit 2541626cfb79 Message-ID: <20230116122403.upk5ci4mbebw23m7@wslaptop> References: <20221228144914.z7t7a4fdwvbblnak@wslaptop> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: nouveau@lists.freedesktop.org, regressions@lists.linux.dev, dri-devel@lists.freedesktop.org, bskeggs@redhat.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Mon, Jan 16, 2023 at 07:45:05AM +1000, David Airlie wrote: > On Thu, Dec 29, 2022 at 12:58 AM Diogo Ivo wrote: > As a quick check can you try changing > > drivers/gpu/drm/nouveau/nvkm/core/firmware.c:nvkm_firmware_mem_target > from NVKM_MEM_TARGET_HOST to NVKM_MEM_TARGET_NCOH ? Hello! Applying this change breaks probing in a different way, with a bad PC=0x0. From a quick look at nvkm_falcon_load_dmem it looks like this could happen due to the .load_dmem() callback not being properly initialized. This is the kernel log I got: [ 2.010601] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [ 2.019436] Mem abort info: [ 2.022273] ESR = 0x0000000086000005 [ 2.026066] EC = 0x21: IABT (current EL), IL = 32 bits [ 2.031429] SET = 0, FnV = 0 [ 2.034528] EA = 0, S1PTW = 0 [ 2.037694] FSC = 0x05: level 1 translation fault [ 2.042572] [0000000000000000] user address but active_mm is swapper [ 2.048961] Internal error: Oops: 0000000086000005 [#1] SMP [ 2.054529] Modules linked in: [ 2.057582] CPU: 0 PID: 36 Comm: kworker/u8:1 Not tainted 6.2.0-rc3+ #2 [ 2.064190] Hardware name: Google Pixel C (DT) [ 2.068628] Workqueue: events_unbound deferred_probe_work_func [ 2.074463] pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 2.081417] pc : 0x0 [ 2.083600] lr : nvkm_falcon_load_dmem+0x58/0x80 [ 2.088218] sp : ffffffc009ddb6f0 [ 2.091526] x29: ffffffc009ddb6f0 x28: ffffff808028a008 x27: ffffff8081e43c38 [ 2.098658] x26: 00000000000000ff x25: ffffff808028a0a0 x24: 0000000000000000 [ 2.105788] x23: ffffff8080c328f8 x22: 000000000000002c x21: 0000000000005fd4 [ 2.112917] x20: ffffffc009ddb76c x19: ffffff8080c328b8 x18: 0000000000000000 [ 2.120047] x17: 2e74696e695f646f x16: 6874656d5f77732f x15: 0000000000000000 [ 2.127176] x14: 0000000002f546c2 x13: 0000000000000000 x12: 00000000000001ce [ 2.134306] x11: 0000000000000001 x10: 0000000000000a90 x9 : ffffffc009ddb600 [ 2.141436] x8 : ffffff80803d19f0 x7 : ffffff80bf971180 x6 : 00000000000001b9 [ 2.148565] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 000000000000002c [ 2.155693] x2 : 0000000000005fd4 x1 : ffffffc009ddb76c x0 : ffffff8080c328b8 [ 2.162822] Call trace: [ 2.165264] 0x0 [ 2.167099] gm20b_pmu_init+0x78/0xb4 [ 2.170762] nvkm_pmu_init+0x20/0x34 [ 2.174334] nvkm_subdev_init_+0x60/0x12c [ 2.178339] nvkm_subdev_init+0x60/0xa0 [ 2.182171] nvkm_device_init+0x14c/0x2a0 [ 2.186178] nvkm_udevice_init+0x60/0x9c [ 2.190097] nvkm_object_init+0x48/0x1b0 [ 2.194013] nvkm_ioctl_new+0x168/0x254 [ 2.197843] nvkm_ioctl+0xd0/0x220 [ 2.201239] nvkm_client_ioctl+0x10/0x1c [ 2.205160] nvif_object_ctor+0xf4/0x22c [ 2.209079] nvif_device_ctor+0x28/0x70 [ 2.212910] nouveau_cli_init+0x150/0x590 [ 2.216916] nouveau_drm_device_init+0x60/0x2a0 [ 2.221442] nouveau_platform_device_create+0x90/0xd0 [ 2.226489] nouveau_platform_probe+0x3c/0x9c [ 2.230841] platform_probe+0x68/0xc0 [ 2.234500] really_probe+0xbc/0x2dc [ 2.238070] __driver_probe_device+0x78/0xe0 [ 2.242334] driver_probe_device+0xd8/0x160 [ 2.246511] __device_attach_driver+0xb8/0x134 [ 2.250948] bus_for_each_drv+0x78/0xd0 [ 2.254782] __device_attach+0x9c/0x1a0 [ 2.258612] device_initial_probe+0x14/0x20 [ 2.262789] bus_probe_device+0x98/0xa0 [ 2.266619] deferred_probe_work_func+0x88/0xc0 [ 2.271142] process_one_work+0x204/0x40c [ 2.275150] worker_thread+0x230/0x450 [ 2.278894] kthread+0xc8/0xcc [ 2.281946] ret_from_fork+0x10/0x20 [ 2.285525] Code: bad PC value [ 2.288576] ---[ end trace 0000000000000000 ]--- Diogo 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2B1DEC7EE23 for ; Thu, 4 May 2023 12:33:02 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BA26A10E456; Thu, 4 May 2023 12:32:47 +0000 (UTC) Received: from smtp1.tecnico.ulisboa.pt (smtp1.tecnico.ulisboa.pt [193.136.128.21]) by gabe.freedesktop.org (Postfix) with ESMTPS id 75AF310E3F5; Mon, 16 Jan 2023 12:27:05 +0000 (UTC) Received: from localhost (localhost.localdomain [127.0.0.1]) by smtp1.tecnico.ulisboa.pt (Postfix) with ESMTP id 11F0E6008768; Mon, 16 Jan 2023 12:27:03 +0000 (WET) X-Virus-Scanned: by amavisd-new-2.11.0 (20160426) (Debian) at tecnico.ulisboa.pt Received: from smtp1.tecnico.ulisboa.pt ([127.0.0.1]) by localhost (smtp1.tecnico.ulisboa.pt [127.0.0.1]) (amavisd-new, port 10025) with LMTP id 7cdRpeg_D0dx; Mon, 16 Jan 2023 12:27:00 +0000 (WET) Received: from mail1.tecnico.ulisboa.pt (mail1.ist.utl.pt [IPv6:2001:690:2100:1::b3dd:b9ac]) by smtp1.tecnico.ulisboa.pt (Postfix) with ESMTPS id DB48C6008767; Mon, 16 Jan 2023 12:26:59 +0000 (WET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=tecnico.ulisboa.pt; s=mail; t=1673872020; bh=XkE1A2YnrbrU2WIxkcPZ+PORJqR8hAkePFOr8rxfZuE=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=a8Xo4bkmsvTuqonsY4ekcnc5dvWH3mlZRjabBlWJkbOAWhp3rdDaUNODmHarhe2TH H7Go9Ii3nCMaTd4Sd+q5JKYVxcOiaBrFMkQ2Lf5zBefVAuViUjOY0seSUGsOYEmhfx 7qpXOISRmKIcZZ9Ro8jMZa1ERBnEr5r0BQs6JiUo= Received: from wslaptop (unknown [IPv6:2001:818:dcb5:dc00:d990:b664:f16:4cb2]) (Authenticated sender: ist187313) by mail1.tecnico.ulisboa.pt (Postfix) with ESMTPSA id 4A87C360078; Mon, 16 Jan 2023 12:26:59 +0000 (WET) Date: Mon, 16 Jan 2023 12:24:37 +0000 From: Diogo Ivo To: David Airlie Message-ID: <20230116122403.upk5ci4mbebw23m7@wslaptop> References: <20221228144914.z7t7a4fdwvbblnak@wslaptop> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Mailman-Approved-At: Thu, 04 May 2023 12:31:35 +0000 Subject: Re: [Nouveau] [REGRESSION] GM20B probe fails after commit 2541626cfb79 X-BeenThere: nouveau@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Nouveau development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: nouveau@lists.freedesktop.org, regressions@lists.linux.dev, dri-devel@lists.freedesktop.org, bskeggs@redhat.com Errors-To: nouveau-bounces@lists.freedesktop.org Sender: "Nouveau" On Mon, Jan 16, 2023 at 07:45:05AM +1000, David Airlie wrote: > On Thu, Dec 29, 2022 at 12:58 AM Diogo Ivo wrote: > As a quick check can you try changing > > drivers/gpu/drm/nouveau/nvkm/core/firmware.c:nvkm_firmware_mem_target > from NVKM_MEM_TARGET_HOST to NVKM_MEM_TARGET_NCOH ? Hello! Applying this change breaks probing in a different way, with a bad PC=0x0. From a quick look at nvkm_falcon_load_dmem it looks like this could happen due to the .load_dmem() callback not being properly initialized. This is the kernel log I got: [ 2.010601] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [ 2.019436] Mem abort info: [ 2.022273] ESR = 0x0000000086000005 [ 2.026066] EC = 0x21: IABT (current EL), IL = 32 bits [ 2.031429] SET = 0, FnV = 0 [ 2.034528] EA = 0, S1PTW = 0 [ 2.037694] FSC = 0x05: level 1 translation fault [ 2.042572] [0000000000000000] user address but active_mm is swapper [ 2.048961] Internal error: Oops: 0000000086000005 [#1] SMP [ 2.054529] Modules linked in: [ 2.057582] CPU: 0 PID: 36 Comm: kworker/u8:1 Not tainted 6.2.0-rc3+ #2 [ 2.064190] Hardware name: Google Pixel C (DT) [ 2.068628] Workqueue: events_unbound deferred_probe_work_func [ 2.074463] pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 2.081417] pc : 0x0 [ 2.083600] lr : nvkm_falcon_load_dmem+0x58/0x80 [ 2.088218] sp : ffffffc009ddb6f0 [ 2.091526] x29: ffffffc009ddb6f0 x28: ffffff808028a008 x27: ffffff8081e43c38 [ 2.098658] x26: 00000000000000ff x25: ffffff808028a0a0 x24: 0000000000000000 [ 2.105788] x23: ffffff8080c328f8 x22: 000000000000002c x21: 0000000000005fd4 [ 2.112917] x20: ffffffc009ddb76c x19: ffffff8080c328b8 x18: 0000000000000000 [ 2.120047] x17: 2e74696e695f646f x16: 6874656d5f77732f x15: 0000000000000000 [ 2.127176] x14: 0000000002f546c2 x13: 0000000000000000 x12: 00000000000001ce [ 2.134306] x11: 0000000000000001 x10: 0000000000000a90 x9 : ffffffc009ddb600 [ 2.141436] x8 : ffffff80803d19f0 x7 : ffffff80bf971180 x6 : 00000000000001b9 [ 2.148565] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 000000000000002c [ 2.155693] x2 : 0000000000005fd4 x1 : ffffffc009ddb76c x0 : ffffff8080c328b8 [ 2.162822] Call trace: [ 2.165264] 0x0 [ 2.167099] gm20b_pmu_init+0x78/0xb4 [ 2.170762] nvkm_pmu_init+0x20/0x34 [ 2.174334] nvkm_subdev_init_+0x60/0x12c [ 2.178339] nvkm_subdev_init+0x60/0xa0 [ 2.182171] nvkm_device_init+0x14c/0x2a0 [ 2.186178] nvkm_udevice_init+0x60/0x9c [ 2.190097] nvkm_object_init+0x48/0x1b0 [ 2.194013] nvkm_ioctl_new+0x168/0x254 [ 2.197843] nvkm_ioctl+0xd0/0x220 [ 2.201239] nvkm_client_ioctl+0x10/0x1c [ 2.205160] nvif_object_ctor+0xf4/0x22c [ 2.209079] nvif_device_ctor+0x28/0x70 [ 2.212910] nouveau_cli_init+0x150/0x590 [ 2.216916] nouveau_drm_device_init+0x60/0x2a0 [ 2.221442] nouveau_platform_device_create+0x90/0xd0 [ 2.226489] nouveau_platform_probe+0x3c/0x9c [ 2.230841] platform_probe+0x68/0xc0 [ 2.234500] really_probe+0xbc/0x2dc [ 2.238070] __driver_probe_device+0x78/0xe0 [ 2.242334] driver_probe_device+0xd8/0x160 [ 2.246511] __device_attach_driver+0xb8/0x134 [ 2.250948] bus_for_each_drv+0x78/0xd0 [ 2.254782] __device_attach+0x9c/0x1a0 [ 2.258612] device_initial_probe+0x14/0x20 [ 2.262789] bus_probe_device+0x98/0xa0 [ 2.266619] deferred_probe_work_func+0x88/0xc0 [ 2.271142] process_one_work+0x204/0x40c [ 2.275150] worker_thread+0x230/0x450 [ 2.278894] kthread+0xc8/0xcc [ 2.281946] ret_from_fork+0x10/0x20 [ 2.285525] Code: bad PC value [ 2.288576] ---[ end trace 0000000000000000 ]--- Diogo