From: Colin Ian King > Sent: 14 September 2015 20:35 > On the unlikely event that drv is null, the current code will > perform a null pointer dereference with it when printing a dev_dbg > message. Instead, the BUG_ON check on drv should be performed > before we emit the dev_dbg message. ... > diff --git a/drivers/ps3/ps3-vuart.c b/drivers/ps3/ps3-vuart.c > index d6db822..632701a 100644 > --- a/drivers/ps3/ps3-vuart.c > +++ b/drivers/ps3/ps3-vuart.c > @@ -1000,12 +1000,11 @@ static int ps3_vuart_probe(struct > ps3_system_bus_device *dev) > dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); > > drv = ps3_system_bus_dev_to_vuart_drv(dev); > + BUG_ON(!drv); > > dev_dbg(&dev->core, "%s:%d: (%s)\n", __func__, __LINE__, > drv->core.core.name); > > - BUG_ON(!drv); > -
Just delete the BUG_ON(), it is just as easy to debug the dereference. David _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev