Hi Boris, On 12/16/2016 11:35 AM, Boris Ostrovsky wrote: > If acpi_cppc_processor_probe() had not executed successfully (for > example, if _CPC object was not found) then cpc_desc_ptr for that > processor will be invalid. > > Signed-off-by: Boris Ostrovsky <[email protected]> > --- > drivers/acpi/cppc_acpi.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c > index d0d0504..5bba26e 100644 > --- a/drivers/acpi/cppc_acpi.c > +++ b/drivers/acpi/cppc_acpi.c > @@ -824,6 +824,8 @@ void acpi_cppc_processor_exit(struct acpi_processor *pr) > void __iomem *addr; > > cpc_ptr = per_cpu(cpc_desc_ptr, pr->id); > + if (!cpc_ptr) > + return; > > /* Free all the mapped sys mem areas for this CPU */ > for (i = 2; i < cpc_ptr->num_entries; i++) { I think a recent patch from Sebastian fixed the same issue. https://git.kernel.org/cgit/linux/kernel/git/rafael/linux-pm.git/commit/?h=bleeding-edge&id=9e9d68dad58c70f40f50adfeabd2fdaa39a743fd
-- Thanks, Prashanth
