Re: [PATCH] libata: reject passthrough WRITE SAME requests

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On Tue, Apr 25, 2017 at 01:39:54PM +0200, Christoph Hellwig wrote:
> The WRITE SAME to TRIM translation rewrites the DATA OUT buffer.  While
> the SCSI code accomodates for this by passing a read-writable buffer
> userspace applications don't cater for this behavior.  In fact it can
> be used to rewrite e.g. a readonly file through mmap and should be
> considered as a security fix.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx

Applied to libata/for-4.12, assuming we aren't doing rc9.

Thanks.

-- 
tejun
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