linux-kernel - Re: [PATCH v1 2/4] ata: libata-scsi: Generate ATA PT sense data when ATA ERR/DF are set

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Date: Thu, 20 Jun 2024 15:12:37 +0200
From: Niklas Cassel <cassel@...nel.org>
To: Igor Pylypiv <ipylypiv@...gle.com>
Cc: Damien Le Moal <dlemoal@...nel.org>, Tejun Heo <tj@...nel.org>,
	Hannes Reinecke <hare@...e.de>, linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 2/4] ata: libata-scsi: Generate ATA PT sense data when
 ATA ERR/DF are set

On Tue, Jun 18, 2024 at 01:13:24AM +0000, Igor Pylypiv wrote:
> 
> Any failed ATA PASS-THROUGH command with CK_COND=1 has this issue. For example,
> Sending READ SECTOR(S) EXT via ATA PASS-THROUGH with CK_COND=1 to an lba
> that was previously corrupted by WRITE UNCORRECTABLE EXT is supposed to
> return "READ ERROR - LBA MARKED BAD BY APPLICATION CLIENT" but instead it
> returns generated "UNRECOVERED READ ERROR - AUTO REALLOCATE FAILED".

I assume that the drive generated correct sense data, but that
ata_gen_passthru_sense() overwrites/overwrote the sense data with
generated sense data based on taskfile registers?


Kind regards,
Niklas