[libvirt] [PATCH 1/2] bhyve: fix crash in bhyveBuildNetArgStr

Roman Bogorodskiy bogorodskiy at gmail.com
Fri Jun 13 17:55:25 UTC 2014


  Eric Blake wrote:

> On 06/13/2014 10:48 AM, Roman Bogorodskiy wrote:
> > bhyveBuildNetArgStr() calls virNetDevTapCreateInBridgePort() and
> > passes tapfd = NULL, but tapfdSize = 1. That is wrong, because
> > if virNetDevTapCreateInBridgePort() crashes after successfully
> > creating a TAP device, it'll jump to 'error' label, that
> > loops over tapfd and calls VIR_FORCE_CLOSE:
> > 
> >    for (i = 0; i < tapfdSize && tapfd[i] >= 0; i++)
> > 
> > In that case we get a segfault.
> > 
> > As the bhyve code doesn't use tapfd, pass NULL and set tapfdSize to 0.
> > ---
> >  src/bhyve/bhyve_command.c | 3 +--
> >  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> ACK.

Thanks; pushed.

Roman Bogorodskiy
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