From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg0-f71.google.com (mail-pg0-f71.google.com [74.125.83.71]) by kanga.kvack.org (Postfix) with ESMTP id 72CA06B0033 for ; Sun, 10 Dec 2017 22:48:38 -0500 (EST) Received: by mail-pg0-f71.google.com with SMTP id t9so11928039pgu.1 for ; Sun, 10 Dec 2017 19:48:38 -0800 (PST) Received: from www262.sakura.ne.jp (www262.sakura.ne.jp. [2001:e42:101:1:202:181:97:72]) by mx.google.com with ESMTPS id w69si10314679pfd.289.2017.12.10.19.48.33 for (version=TLS1 cipher=AES128-SHA bits=128/128); Sun, 10 Dec 2017 19:48:34 -0800 (PST) Message-Id: <201712110348.vBB3mSFZ068689@www262.sakura.ne.jp> Subject: Re: Google Chrome cause locks held in system (kernel 4.15 rc2) From: Tetsuo Handa MIME-Version: 1.0 Date: Mon, 11 Dec 2017 12:48:28 +0900 References: <201712110014.vBB0ENwU088603@www262.sakura.ne.jp> <1512963298.23718.15.camel@gmail.com> In-Reply-To: <1512963298.23718.15.camel@gmail.com> Content-Type: text/plain; charset="ISO-2022-JP" Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: mikhail Cc: mhocko@kernel.org, darrick.wong@oracle.com, linux-xfs@vger.kernel.org, linux-mm@kvack.org mikhail wrote: > > > netconsole works only within local network? destination ip may be from > > > another network? > > > > netconsole can work with another network. > > > > (step 1) Verify that UDP packets are reachable. You can test with > > > > # echo test > /dev/udp/213.136.82.171/6666 > > > > if you are using bash. > > After this on remote machine was created folder with name of router > external ip address. > Inside this folder was places one file with name of current day. This > file has size 0 of bytes and not contain "test" message inside. > That is how it should be? The message should be written to the log file. If not written, UDP packets are dropped somewhere. You need to solve this problem first. > > > > > (step 2) Verify that you specified gateway's MAC address rather than > > target host's MAC address. "ff:ff:ff:ff:ff:ff" suggests that > > netconsole is unable to resolve correct MAC address. > > > > I am not was specified MAC address when launch netconsole. The address > "ff:ff:ff:ff:ff:ff" was settled by default. > Anyway does it matter for remote machine placed behind router? > Ok, I also setted right MAC address for remote machine. But nothing is > changed. If remote machine is in a different network segment, you need to specify gateway's MAC address rather than remote machine's MAC address. For more information about netconsole, please see https://www.kernel.org/doc/Documentation/networking/netconsole.txt . -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org