linux-ext4 - ext4 errors on kernel 3.17.0

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Date:	Fri, 14 Nov 2014 17:52:37 +0100
From:	Angelo Dureghello <angelo70@...il.com>
To:	linux-ext4@...r.kernel.org
Subject: ext4 errors on kernel 3.17.0

Dear all,

i am running kernel 3.17.0 (migrating from 3.5.1) on an am1808 (arm)
based custom board, with a microsd card formatted ext4.

Strangely, starting from a new formatted ext4 partition (mkfs.ext4)
after some files are written from a running application, i getseveral
errors trying fsck.ext4 or trying to remove the files manually (rm):


[root@...ix media]# fsck.ext4 /dev/mmcblk0p1
e2fsck 1.42.4 (12-June-2012)
ext2fs_check_desc: Corrupt group descriptor: bad block for block bitmap
fsck.ext4: Group descriptors look bad... trying backup blocks...
/dev/mmcblk0p1 was not cleanly unmounted, check forced.
Resize inode not valid.  Recreate<y>? Automount: /dev/mmcblk0p1 inserted
Automount: DEVICE LOCK found quiting...

[root@...ix mmcsd0p1]# rm -r soundscape/
EXT4-fs error (device mmcblk0p1): ext4_lookup:1441: inode #260611: comm 
rm: 'streams' linked to parent dir
rm: can't stat 'EXT4-fs warning (device mmcblk0p1): empty_dir:2520: bad 
directory (dir #260611) - no `.' or `..'
soundscape/set_1/configuration/streams/streams': Input/output error
EXT4-fs warning (device mmcblk0p1): empty_dir:2520: bad directory (dir 
#260618) - no `.' or `..'
EXT4-fs warning (device mmcblk0p1): empty_dir:2520: bad directory (dir 
#260615) - no `.' or `..'
EXT4-fs warning (device mmcblk0p1): empty_dir:2520: bad directory (dir 
#260616) - no `.' or `..'
EXT4-fs error (device mmcblk0p1): ext4_lookup:1448: inode #260617: comm 
rm: deleted inode referenced: 260611
rm: can't stat 'EXT4-fs warning (device mmcblk0p1): empty_dir:2520: bad 
directory (dir #260617) - no `.' or `..'
soundscape/set_1/firmware/streams': Input/output error
EXT4-fs error (device mmcblk0p1): ext4_lookup:1448: inode #260619: comm 
rm: deleted inode referenced: 260611
rm: can't stat 'EXT4-fs warning (device mmcblk0p1): empty_dir:2520: bad 
directory (dir #260619) - no `.' or `..'
soundscape/set_1/schedule/streams': Input/output error
EXT4-fs error (device mmcblk0p1): ext4_lookup:1448: inode #260610: comm 
rm: deleted inode referenced: 260611
rm: can't stat 'soundscape/downloads/streams': Input/output error
rm: can't remove 'soundscape/downloads': Directory not empty
rm: can't remove 'soundscape': Directory not empty
[root@...ix mmcsd0p1]#

I cannot reproduce these errors on kernel 3.5.1.

Every help is very appreciated.
Angelo
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