Re: kernel BUG at fs/ext4/extents.c:2738!

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Andreas Friedrich Berendsen wrote:
> I have no idea what information you guys will need. Let me know and I'll
> to gather it.
> 
> Feb 20 19:26:11 storage kernel: ------------[ cut here ]------------
> Feb 20 19:26:11 storage kernel: kernel BUG at fs/ext4/extents.c:2738!
> Feb 20 19:26:11 storage kernel: invalid opcode: 0000 [#1] SMP 
> Feb 20 19:26:11 storage kernel: last sysfs
> file: /sys/devices/pci0000:00/0000:00:04.0/host0/target0:0:0/0:0:0:0/block/sda/sda2/dev
> Feb 20 19:26:11 storage kernel: Dumping ftrace buffer:
> Feb 20 19:26:11 storage kernel:   (ftrace buffer empty)
> Feb 20 19:26:11 storage kernel: CPU 0 
> Feb 20 19:26:11 storage kernel: Modules linked in: vboxnetflt vboxdrv
> ext2 ext4 jbd2 crc16 fuse ipt_MASQUERADE iptable_nat nf_nat bridge stp
> nfsd lockd nfs_acl auth_rpcgss exportfs sunrpc bonding ipv6 dm_multipath
> raid456 async_xor async_memcpy async_tx xor kvm_amd kvm uinput usblp
> snd_hda_intel snd_seq_dummy cfi_cmdset_0002 jedec_probe snd_seq_oss
> snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss forcedeth
> snd_mixer_oss snd_pcm snd_timer snd_page_alloc snd_hwdep joydev sata_nv
> usb_storage cfi_probe gen_probe cfi_util serio_raw nvidia(P) snd
> firewire_ohci pcspkr k8temp hwmon ck804xrom soundcore firewire_core
> crc_itu_t mtd chipreg map_funcs i2c_nforce2 i2c_core ata_generic
> pata_acpi pata_amd [last unloaded: vboxdrv]
> Feb 20 19:26:11 storage kernel: Pid: 24313, comm: mv Tainted: P        W
> 2.6.28.5.afb.fc10.3.x86_amd64 #1

since this isn't a stock fc10 kernel (?) i'm nto exactly sure what the
BUG was, I assume it was:

        BUG_ON(path[depth].p_ext == NULL && depth != 0);

?

Can you reproduce this?  Perhaps we can reproduce it from an e2image as
well if so, then it could be investigated ....

(Or, if you can reproduce it, perhaps try a .29 kernel first)

- Eric
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