Re: [PATCH] SCSI: SD: set max_ws_blocks as max_unmap_blocks if it isn't provided

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On Fri, Dec 5, 2014 at 11:49 PM, Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote:
>
>
> On 05/12/2014 14:05, Ming Lei wrote:
>>
>> [   50.112885] sd 0:0:1:0: [sda] FAILED Result: hostbyte=DID_OK
>> driverbyte=DRIVER_SENSE
>> [   50.113859] sd 0:0:1:0: [sda] Sense Key : Illegal Request [current]
>> [   50.113859] sd 0:0:1:0: [sda] Add. Sense: Invalid field in cdb
>> [   50.113859] sd 0:0:1:0: [sda] CDB:
>> [   50.113859] Write same(16): 93 08 00 00 00 00 00 00 80 00 00 40 00 00 00 00
>> [   50.113859] blk_update_request: critical target error, dev sda, sector
>> 32768
>
> So this command is zeroing 2^22 sectors (2GB) starting from sector 128.
>  How did you run QEMU and what command produced this request?

It was found in xfstests, and turns out it is a QEMU INT_MAX bug.

Thanks
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