http://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/?id=f1e1c9e5e357c05253affb13be29285c5cb56bf0
On 26 September 2016 at 22:19, Boris Ostrovsky <boris.ostrov...@oracle.com> wrote: > Otherwise we will try to dereference ds which has not been allocated. > > Signed-off-by: Boris Ostrovsky <boris.ostrov...@oracle.com> > --- > arch/x86/events/intel/bts.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/arch/x86/events/intel/bts.c b/arch/x86/events/intel/bts.c > index bdcd651..1f5657f 100644 > --- a/arch/x86/events/intel/bts.c > +++ b/arch/x86/events/intel/bts.c > @@ -451,6 +451,9 @@ int intel_bts_interrupt(void) > s64 old_head; > int err = -ENOSPC, handled = 0; > > + if (!x86_pmu.bts) > + return 0; > + > /* > * The only surefire way of knowing if this NMI is ours is by checking > * the write ptr against the PMI threshold. > -- > 1.8.3.1 >
