linux-kernel - Re: [PATCH] storvsc: fix memory leak on ring buffer busy

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Message-ID: <20170830081101.5307095d@xeon-e3>
Date:   Wed, 30 Aug 2017 08:11:01 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     "Martin K. Petersen" <martin.petersen@...cle.com>
Cc:     Long Li <longli@...hange.microsoft.com>,
        linux-scsi@...r.kernel.org, Haiyang Zhang <haiyangz@...rosoft.com>,
        "James E . J . Bottomley" <JBottomley@...n.com>,
        linux-kernel@...r.kernel.org, devel@...uxdriverproject.org
Subject: Re: [PATCH] storvsc: fix memory leak on ring buffer busy

On Tue, 29 Aug 2017 21:31:11 -0400
"Martin K. Petersen" <martin.petersen@...cle.com> wrote:

> Long,
> 
> > When storvsc is sending I/O to Hyper-v, it may allocate a bigger
> > buffer descriptor for large data payload that can't fit into a
> > pre-allocated buffer descriptor. This bigger buffer is freed on return
> > path.
> >
> > If I/O request to Hyper-v fails due to ring buffer busy, the storvsc
> > allocated buffer descriptor should also be freed.  
> 
> Which kernel version is this patch aimed at?
> 

Looks like this an old issue. Probably should add

Fixes: be0cf6ca301c ("scsi: storvsc: Set the tablesize based on the information given by the host")