From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oliver Neukum Subject: Hangs in r8152 connected to power management in kernels at least up v4.17-rc4 Date: Tue, 15 May 2018 14:43:08 +0200 Message-ID: <1526388188.2724.5.camel@suse.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org To: hayeswang@realtek.com Return-path: Received: from mx2.suse.de ([195.135.220.15]:43824 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752377AbeEOMnK (ORCPT ); Tue, 15 May 2018 08:43:10 -0400 Sender: netdev-owner@vger.kernel.org List-ID: Hi, I got reports about hangs with this trace: May 13 01:36:55 neroon kernel: INFO: task kworker/0:0:4 blocked for more than 60 seconds. May 13 01:36:55 neroon kernel: Tainted: G U 4.17.0-rc4-1.g8257a00-vanilla #1 May 13 01:36:55 neroon kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 13 01:36:55 neroon kernel: kworker/0:0 D 0 4 2 0x80000000 May 13 01:36:55 neroon kernel: Workqueue: events rtl_work_func_t [r8152] May 13 01:36:55 neroon kernel: Call Trace: May 13 01:36:55 neroon kernel: ? __schedule+0x289/0x880 May 13 01:36:55 neroon kernel: schedule+0x2f/0x90 May 13 01:36:55 neroon kernel: rpm_resume+0xf9/0x7a0 May 13 01:36:55 neroon kernel: ? wait_woken+0x80/0x80 May 13 01:36:55 neroon kernel: rpm_resume+0x547/0x7a0 May 13 01:36:55 neroon kernel: ? __switch_to_asm+0x40/0x70 May 13 01:36:55 neroon kernel: ? __switch_to_asm+0x34/0x70 May 13 01:36:55 neroon kernel: ? __switch_to_asm+0x40/0x70 May 13 01:36:55 neroon kernel: ? __switch_to_asm+0x34/0x70 May 13 01:36:55 neroon kernel: ? __switch_to_asm+0x40/0x70 May 13 01:36:55 neroon kernel: __pm_runtime_resume+0x3a/0x50 May 13 01:36:55 neroon kernel: usb_autopm_get_interface+0x1d/0x50 [usbcore] May 13 01:36:55 neroon kernel: rtl_work_func_t+0x3c/0x27c [r8152] May 13 01:36:55 neroon kernel: process_one_work+0x1d4/0x3f0 May 13 01:36:55 neroon kernel: worker_thread+0x2b/0x3d0 May 13 01:36:55 neroon kernel: ? process_one_work+0x3f0/0x3f0 May 13 01:36:55 neroon kernel: kthread+0x113/0x130 May 13 01:36:55 neroon kernel: ? kthread_create_worker_on_cpu+0x50/0x50 May 13 01:36:55 neroon kernel: ret_from_fork+0x3a/0x50 Any idea? Regards Oliver