Quoting Suzuki K Poulose (2020-04-08 15:43:47) > On Tue, Apr 07, 2020 at 08:48:54PM +0530, Sai Prakash Ranjan wrote: > > > > Thanks, I can test it out. > > Please find the untested patch below. > > ---8>--- > > [untested] coresight: Fix support for sparse port numbers > > On some systems the firmware may not describe all the ports > connected to a component (e.g, for security reasons). This > could be especially problematic for "funnels" where we could > end up in modifying memory beyond the allocated space for > refcounts. > > e.g, for a funnel with input ports listed 0, 3, 5, nr_inport = 3. > However the we could access refcnts[5] while checking for > references. > > Signed-off-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx> > --- Things don't blow up for me anymore with KASAN, so feel free to add Tested-by: Stephen Boyd <swboyd@xxxxxxxxxxxx>
