Messages in this thread | | | Date | Tue, 26 Aug 2014 13:47:09 +0200 | From | Pavel Machek <> | Subject | 3.17-rc2: root=/dev/mmcblk0p2 command line parsing fails |
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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
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