On Fri, Aug 24, 2018 at 12:07:11AM -0400, Ding Xiang wrote: > If fw is null then fw->size will trigger null pointer dereference > > Signed-off-by: Ding Xiang <dingxi...@cmss.chinamobile.com> > --- > drivers/staging/greybus/bootrom.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/staging/greybus/bootrom.c > b/drivers/staging/greybus/bootrom.c > index e85ffae..3af28a0 100644 > --- a/drivers/staging/greybus/bootrom.c > +++ b/drivers/staging/greybus/bootrom.c > @@ -297,7 +297,7 @@ static int gb_bootrom_get_firmware(struct gb_operation > *op) > > queue_work: > /* Refresh timeout */ > - if (!ret && (offset + size == fw->size)) > + if (!ret && fw && (offset + size == fw->size))
That is impossible. If "ret" is zero that implies "fw" is a valid pointer. regards, dan carpenter
