Re: [PATCH v2] scsi: scsi_debug: fix one-partition tape setup bounds

["Kai Mäkisara (Kolumbus)"]

> On 4. Jun 2026, at 16.38, James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> wrote:
> 
> On Wed, 2026-06-03 at 23:55 +0000, Samuel Moelius wrote:
>> The tape setup path writes partition metadata one element past the
>> allocated tape_blocks array when a one-partition configuration is
>> selected.
>> 
>> That corrupts adjacent state during device initialization before any
>> command is issued.
> 
> I still don't get what the actual problem is.  For a single partition
> tape I can't see where scsi_debug would actually do anything with
> tape_blocks[1].  What is it that you're seeing when using scsi_debug
> that motivates this?
> 
The code marks partition 1 as EOD and does not corrupt anything. The tape has partitions
until either EOD partition is encountered or TAPE_MAX_PARTITIONS is reached. I would
be very hesitant to remove this initialization.

Thanks,
Kai