UBIFS corruption in empty space during mount

[Barak Adam]

Hi Richard,

It is detected as an empty area by UBIFS. Regarding bitflips, I am not sure. I am running it with debug printouts, to dump the corruption and analyze it.
Any other idea how to detect if the underlying corruption is bitflips or something else?
The returned error by the lower layer is -EBADMSG which I guess indicates an unrecoverable ECC error in the media.

Thanks,
Barak

-----Original Message-----
From: Richard Weinberger <richard at nod.at>
Sent: Thursday, October 29, 2020 11:19 PM
To: Barak Adam <BAdam at adva.com>
Cc: linux-mtd <linux-mtd at lists.infradead.org>
Subject: Re: UBIFS corruption in empty space during mount

External email: [richard at nod.at]

......................................................................
Barak,

----- Ursprüngliche Mail -----
>> Von: "Barak Adam" <BAdam at adva.com>
>> Thanks Richard.
>>
>> I already applied those patches, but the issue is not yet covered / resolved.
>>
>> What kind of a fix should I apply to the driver layer - raise ECC
>> errors for the upper layers even when ready empty / erased area ?

>Maybe you're facing something else. Did you verify that it is really flipped bits in empty space?

>Thanks,
>//richard
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