From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757472AbaHZLrN (ORCPT ); Tue, 26 Aug 2014 07:47:13 -0400 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:36303 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751893AbaHZLrM (ORCPT ); Tue, 26 Aug 2014 07:47:12 -0400 Date: Tue, 26 Aug 2014 13:47:09 +0200 From: Pavel Machek To: Dinh Nguyen Cc: Jaehoon Chung , dinguyen@altera.com, khilman@linaro.org, olof@lixom.net, arnd@arndb.de, arm@kernel.org, linux-arm-kernel@lists.infradead.org, kernel list , akpm@linux-foundation.org Subject: 3.17-rc2: root=/dev/mmcblk0p2 command line parsing fails Message-ID: <20140826114707.GA16372@amd> References: <1405397216-909-1-git-send-email-dinguyen@altera.com> <53C4D874.2040206@samsung.com> <20140814184710.GA11558@amd.pavel.ucw.cz> <53ED2262.50604@gmail.com> <20140814210252.GB26857@amd.pavel.ucw.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140814210252.GB26857@amd.pavel.ucw.cz> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi! > > > mmc0: new SDHC card at address b368 > > > mmcblk0: mmc0:b368 USD 7.45 GiB > > > mmcblk0: p1 p2 p3 p4 > > > VFS: Cannot open root device "mmcblk0p2" or unknown-block(0,0): error > > > -6 > > > Please append a correct "root=" boot option; here are the available > > > partitions: > > > b300 7822336 mmcblk0 driver: mmcblk > > > b301 102400 mmcblk0p1 00082434-01 > > > b302 1048576 mmcblk0p2 00082434-02 > > > b303 1024 mmcblk0p3 00082434-03 > > > b304 6086656 mmcblk0p4 00082434-04 > > > Kernel panic - not syncing: VFS: Unable to mount root fs on > > > unknown-block(0,0) > > > CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.16.0-11208-gef74117-dirty > > > #2 > > > > Hmm...today's tip-top(899552d6) and ba36899 booted just fine for me. I > > noticed something, you must have commits on top of your ba36899? Mine > > shows 3.16.0-11149-gba36899. > > Ok, thanks for info. I went back to 3.16, and it worked in same > config, and went to 3.17, and it broke. The problem is still there in 3.17-rc2. 3.16 does not have the problem. Messages are still similar: mmc0: new high speed SDHC card at address b368 mmcblk0: mmc0:b368 USD 7.45 GiB mmcblk0: p1 p2 p3 p4 VFS: Cannot open root device "mmcblk0p2" or unknown-block(0,0): error -6 Please append a correct "root=" boot option; here are the available partitions: b300 7822336 mmcblk0 driver: mmcblk b301 102400 mmcblk0p1 00082434-01 b302 1048576 mmcblk0p2 00082434-02 b303 1024 mmcblk0p3 00082434-03 b304 6086656 mmcblk0p4 00082434-04 Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.17.0-rc2-00368-gec0400b-dirty #83 What is going on there? Clearly partition table was parsed and partitions are available; does the mention of unknown-block(0,0) mean that kernel failed to parse the command line? I replaced "root=/dev/mmcblk0p2" with "root=b302" and have a booting system. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html