On 02/07/16 18:00, Nicholas Krause wrote: > This adds properly checking after the call to mvs_find_dev_mvi > due to this function being able to return a NULL pointer and > if this does arise we will deference it in mvs_alloc_dev due > to this function never checking if a NULL pointer is given as > it's input argument. Signed-off-by: Nicholas Krause <xerofoify@xxxxxxxxx> > --- > v3 - Make logic simpler on error path by returning -1 directly > if mvs_find_dev_mvi returns NULL. > v2 - Fix NULL pointer deferenece in error path by calling > spin_unlock_irqrestore on the now NULL pointer, as returned > > > drivers/scsi/mvsas/mv_sas.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c > index 5b9fcff..dffab01 100644 > --- a/drivers/scsi/mvsas/mv_sas.c > +++ b/drivers/scsi/mvsas/mv_sas.c > @@ -1194,6 +1194,8 @@ int mvs_dev_found_notify(struct domain_device *dev, int lock) > struct mvs_device *mvi_device; > > mvi = mvs_find_dev_mvi(dev); > + if (!mvi) > + return -1; > > if (lock) > spin_lock_irqsave(&mvi->lock, flags); > This looks better :) Checking the value of mvi makes sense if mvs_find_dev_mvi() can return NULL. Reviewed-by: Luis de Bethencourt <luisbg@xxxxxxxxxxxxxxx> Thanks, Luis -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
