Re: [PATCH net V2] vhost: correctly check the return value of translate_desc() in log_used()

[David Miller]

From: Jason Wang <jasowang@xxxxxxxxxx>
Date: Tue, 19 Feb 2019 14:53:44 +0800

> When fail, translate_desc() returns negative value, otherwise the
> number of iovs. So we should fail when the return value is negative
> instead of a blindly check against zero.
> 
> Detected by CoverityScan, CID# 1442593:  Control flow issues  (DEADCODE)
> 
> Fixes: cc5e71075947 ("vhost: log dirty page correctly")
> Acked-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
> Reported-by: Stephen Hemminger <stephen@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>

Applied and queued up for -stable, thanks.