[libvirt] [PATCH v2 5/6] qemu: Resolve Coverity FORWARD_NULL

[Peter Krempa]

On Wed, Oct 07, 2015 at 10:12:05 -0400, John Ferlan wrote:
> 
> 
> On 10/07/2015 02:32 AM, Peter Krempa wrote:
> > On Fri, Sep 25, 2015 at 12:31:44 -0400, John Ferlan wrote:
> >> Coverity notices that net->ifname is potentially referenced after a
> >> VIR_FREE().  Looking through history, the vport check code was added by
> >> commit id 'df8100463' and later augmented by commit id 'd490f47b'. The
> >> data is allocated via virNetDevMacVLanCreateWithVPortProfile, so it is
> >> reasonable that it's free'd after the virNetDevMacVLanDeleteWithVPortProfile
> >> call. Additionally, the virNetDevTapDelete call was added by commit id
> >> '075650ff4', but it doesn't seem there's a corresponding VIR_FREE of
> >> the ifname, so include that as well while we're at it.
> >>
> >> Signed-off-by: John Ferlan <jferlan at redhat.com>
> >> ---
> >>  src/qemu/qemu_process.c | 14 ++++++++++++--
> >>  1 file changed, 12 insertions(+), 2 deletions(-)
> >>
> >> diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
> >> index f2586a1..e3d1c62 100644
> >> --- a/src/qemu/qemu_process.c
> >> +++ b/src/qemu/qemu_process.c
> >> @@ -5321,6 +5321,7 @@ void qemuProcessStop(virQEMUDriverPtr driver,
> > 
> > Since we are in qemuProcessStop, which means that the whole active
> > definition will be nuked a few lines below this code ...
> > 
> 
> Just removing the VIR_FREE(net->ifname) works - that's fine as well.  Do
> you want to see the diff before pushing?
>

ACK to that, but it might need a better commit message.

Peter
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