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 X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9F195C433DF for ; Tue, 25 Aug 2020 08:30:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7FA9A20786 for ; Tue, 25 Aug 2020 08:30:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729125AbgHYIan (ORCPT ); Tue, 25 Aug 2020 04:30:43 -0400 Received: from mx2.suse.de ([195.135.220.15]:59538 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725936AbgHYIam (ORCPT ); Tue, 25 Aug 2020 04:30:42 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 75CBAB5FE; Tue, 25 Aug 2020 08:31:10 +0000 (UTC) Date: Tue, 25 Aug 2020 10:30:39 +0200 Message-ID: From: Takashi Iwai To: Tiezhu Yang Cc: Takashi Iwai , Jaroslav Kysela , alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, Xuefeng Li , Subject: Re: [PATCH] Revert "ALSA: hda: Add support for Loongson 7A1000 controller" In-Reply-To: <1598343903-2372-1-git-send-email-yangtiezhu@loongson.cn> References: <1598343903-2372-1-git-send-email-yangtiezhu@loongson.cn> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.8 Emacs/25.3 (x86_64-suse-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 25 Aug 2020 10:25:03 +0200, Tiezhu Yang wrote: > > This reverts commit 61eee4a7fc40 ("ALSA: hda: Add support for Loongson > 7A1000 controller"). > > With this patch, there exists the following error on the Loongson LS7A > platform: > > [ 216.639938] rcu: INFO: rcu_preempt self-detected stall on CPU > [ 216.645685] rcu: 0-....: (1 GPs behind) idle=d5a/1/0x4000000000000004 softirq=562/563 fqs=16476 > [ 216.654565] (t=53772 jiffies g=-463 q=11976) > [ 216.658923] NMI backtrace for cpu 0 > [ 216.662417] CPU: 0 PID: 68 Comm: kworker/0:2 Not tainted 5.8.0+ #3 > [ 216.668587] Hardware name: , BIOS > [ 216.672174] Workqueue: events azx_probe_work [snd_hda_intel] > [ 216.677829] Stack : 0000000000000000 0000000000000000 ffffffff95004ce0 d786f9efa2288403 > [ 216.685848] d786f9efa2288403 0000000000000000 98000001102638c8 ffffffff80cee270 > [ 216.693866] 0000000000000000 0000000000000000 0000000000000000 00000000000002b4 > [ 216.701883] 206b726f775f6562 0000000000000001 0000000000000000 ffffffff80f30000 > [ 216.709902] ffffffff80f30000 ffffffff80d90000 0000000000000000 0000000000000000 > [ 216.717919] 0000000000000000 0000000000000000 0000000000000000 ffffffff80d90000 > [ 216.725937] ffffffff80d90000 0000000000000007 ffffffff806aff18 0000000000000000 > [ 216.733955] ffffffff80f00000 9800000110cc4000 98000001102638c0 ffffffff80d9db80 > [ 216.741974] ffffffff8065a740 0000000000000000 0000000000000000 0000000000000000 > [ 216.749991] 000073746e657665 0000000000000000 ffffffff80211a64 d786f9efa2288403 > [ 216.758009] ... > [ 216.760464] Call Trace: > [ 216.762920] [] show_stack+0x9c/0x130 > [ 216.768058] [] dump_stack+0xb0/0xf0 > [ 216.773110] [] nmi_cpu_backtrace+0x134/0x140 > [ 216.778939] [] nmi_trigger_cpumask_backtrace+0x190/0x200 > [ 216.785805] [] rcu_dump_cpu_stacks+0x12c/0x190 > [ 216.791806] [] rcu_sched_clock_irq+0xa2c/0xfc8 > [ 216.797808] [] update_process_times+0x2c/0xb8 > [ 216.803724] [] tick_sched_timer+0x40/0xb8 > [ 216.809293] [] __hrtimer_run_queues+0x118/0x1d0 > [ 216.815380] [] hrtimer_interrupt+0x12c/0x2d8 > [ 216.821208] [] c0_compare_interrupt+0x74/0xa0 > [ 216.827124] [] __handle_irq_event_percpu+0xa8/0x198 > [ 216.833558] [] handle_irq_event_percpu+0x30/0x90 > [ 216.839732] [] handle_percpu_irq+0x88/0xb8 > [ 216.845388] [] generic_handle_irq+0x44/0x60 > [ 216.851131] [] do_IRQ+0x18/0x28 > [ 216.855838] [] plat_irq_dispatch+0x64/0x100 > [ 216.861579] [] handle_int+0x140/0x14c > [ 216.866802] [] irq_exit+0xf8/0x100 Could you edit the Oops message to drop unnecessary hex numbers, timestamps, and whatever redundant for readers? thanks, Takashi