From: "Michael S. Tsirkin" <[email protected]>
Date: Fri, 18 Sep 2015 13:41:09 +0300
> Upon TUNSETSNDBUF, macvtap reads the requested sndbuf size into
> a local variable u.
> commit 39ec7de7092b ("macvtap: fix uninitialized access on
> TUNSETIFF") changed its type to u16 (which is the right thing to
> do for all other macvtap ioctls), breaking all values > 64k.
>
> The value of TUNSETSNDBUF is actually a signed 32 bit integer, so
> the right thing to do is to read it into an int.
>
> Cc: David S. Miller <[email protected]>
> Fixes: 39ec7de7092b ("macvtap: fix uninitialized access on TUNSETIFF")
> Reported-by: Mark A. Peloquin
> Bisected-by: Matthew Rosato <[email protected]>
> Reported-by: Christian Borntraeger <[email protected]>
> Signed-off-by: Michael S. Tsirkin <[email protected]>
Applied and queued up for -stable, thanks.
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