Unfortunately it also happened with the upstream kernel:
[14081.450885] EXT4-fs error (device dm-1): ext4_mb_generate_buddy:741: group 904, 32254 clusters in bitmap, 32258 in gd [14081.450895] Aborting journal on device dm-1-8. [14081.451151] EXT4-fs (dm-1): Remounting filesystem read-only [14081.452467] EXT4-fs (dm-1): ext4_da_writepages: jbd2_start: 9223372036854775807 pages, ino 2408796; err -30
$ uname -a Linux foo 3.4.0-030400rc4-generic #201204230908 SMP Mon Apr 23 13:10:03 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
Unfortunately it also happened with the upstream kernel:
[14081.450885] EXT4-fs error (device dm-1): ext4_mb_ generate_ buddy:741: group 904, 32254 clusters in bitmap, 32258 in gd
[14081.450895] Aborting journal on device dm-1-8.
[14081.451151] EXT4-fs (dm-1): Remounting filesystem read-only
[14081.452467] EXT4-fs (dm-1): ext4_da_writepages: jbd2_start: 9223372036854775807 pages, ino 2408796; err -30
$ uname -a -generic #201204230908 SMP Mon Apr 23 13:10:03 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
Linux foo 3.4.0-030400rc4