Bug#435054: linux-image-2.6.18-4-686: modprobe diskonchip unconditionally formatted my mtd device! :(
On Sun, Jul 29, 2007 at 12:46:51AM -0600, supaplex wrote:
> Package: linux-image-2.6.18-4-686
> Version: 2.6.18.dfsg.1-12etch2
> Severity: critical
> Justification: causes serious data loss
>
> # modprobe diskonchip
>
> syslog:
> Jul 28 23:52:02 pxe1 kernel: NFTL driver: nftlcore.c $Revision: 1.98 $, nftlmount.c $Revision: 1.41 $
> Jul 28 23:52:41 pxe1 kernel: DiskOnChip found at 0xd8000
> Jul 28 23:52:41 pxe1 kernel: DiskOnChip 2000 responds to DWORD access
> Jul 28 23:52:41 pxe1 kernel: Detected 1 chips per floor.
> Jul 28 23:52:41 pxe1 kernel: NAND device: Manufacturer ID: 0xec, Chip ID: 0x75 (Samsung NAND 32MiB 3,3V 8-bit)
> Jul 28 23:52:41 pxe1 kernel: ECC error scanning DOC at 0x10000
> Jul 28 23:52:41 pxe1 kernel: Found DiskOnChip ANAND Media Header at 0x10000
> Jul 28 23:52:41 pxe1 kernel: ECC error scanning DOC at 0x14000
> Jul 28 23:52:41 pxe1 kernel: Found DiskOnChip ANAND Media Header at 0x14000
> Jul 28 23:52:41 pxe1 kernel: DataOrgID = ANAND
> Jul 28 23:52:41 pxe1 kernel: NumEraseUnits = 2044
> Jul 28 23:52:41 pxe1 kernel: FirstPhysicalEUN = 4
> Jul 28 23:52:41 pxe1 kernel: FormattedSize = 32768000
> Jul 28 23:52:41 pxe1 kernel: UnitSizeFactor = 255
> Jul 28 23:52:41 pxe1 kernel: Bad block table at page 129, version 0x55
> Jul 28 23:52:41 pxe1 kernel: Bad block table at page 161, version 0x55
> Jul 28 23:52:41 pxe1 kernel: Formatting block 6
> Jul 28 23:52:41 pxe1 kernel: Formatting block 7
> Jul 28 23:52:41 pxe1 kernel: Formatting block 8
> Jul 28 23:52:41 pxe1 kernel: Formatting block 9
> Jul 28 23:52:41 pxe1 kernel: Formatting block 10
> Jul 28 23:52:41 pxe1 kernel: Formatting block 11
> and so on...
> Jul 28 23:53:53 pxe1 kernel: Formatting block 2045
> Jul 28 23:53:54 pxe1 kernel: Formatting block 2046
> Jul 28 23:53:54 pxe1 kernel: Formatting block 2047
> Jul 28 23:53:54 pxe1 kernel: nftla: unknown partition table
> Jul 28 23:53:54 pxe1 kernel: Creating 1 MTD partitions on "DiskOnChip 2000 (NFTL Model)":
> Jul 28 23:53:54 pxe1 kernel: 0x00018000-0x02000000 : " DiskOnChip BDTL partition"
> Jul 28 23:53:54 pxe1 kernel: Found alias of DOC at 0xd8000 to 0xda000
>
> I'd rather expect a kernel message like "Failed to load ... use modprobe
> diskonchip format=1 to format mtd" instead of it deciding on its own.
> My whole intention was to backup the mtd before working with it - but
> now it's trashed.
>
> The kernel I'm using is based on the same code+patches, but with static
> NFS+NIC and nfsroot support (so it'll pxeboot), otherwise it's identical
> to the package. (my money is on "upstream" anyway).
Does this still occur with later kernels, such as the one from Lenny?
Cheers,
Moritz
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