On Tue, 23 May 2023 13:00:53 -0400
Matthew Rosato <mjros...@linux.ibm.com> wrote:
> On 5/16/23 10:46 PM, Zhenzhong Duan wrote:
> > vbasedev->name is freed wrongly which leads to garbage VFIO trace log.
> > Fix it by allocating a dup of vbasedev->name and then free the dup.
> >
> > Fixes: 2dca1b37a7 ("vfio/pci: add support for VF token")
> > Suggested-by: Alex Williamson <alex.william...@redhat.com>
> > Signed-off-by: Zhenzhong Duan <zhenzhong.d...@intel.com>
>
> Reviewed-by: Matthew Rosato <mjros...@linux.ibm.com>
>
> Also verified that this resolves an issue seen on s390, as we were
> seeing not just garbage logs but QEMU crashes in certain cases e.g.
> during device unplug. Thanks!
Thanks for the testing and reminder, I'll get a pull request out for
this. Thanks,
Alex
> > ---
> > v2: "toke" -> "token", Cedric
> > Update with Alex suggested change
> >
> > hw/vfio/pci.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
> > index bf27a3990564..73874a94de12 100644
> > --- a/hw/vfio/pci.c
> > +++ b/hw/vfio/pci.c
> > @@ -2994,7 +2994,7 @@ static void vfio_realize(PCIDevice *pdev,
> > Error **errp) qemu_uuid_unparse(&vdev->vf_token, uuid);
> > name = g_strdup_printf("%s vf_token=%s", vbasedev->name,
> > uuid); } else {
> > - name = vbasedev->name;
> > + name = g_strdup(vbasedev->name);
> > }
> >
> > ret = vfio_get_device(group, name, vbasedev, errp);
>
