1 files changed, 1 insertions, 1 deletions

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index 35102ecdfc8d..92dfeb343a6a 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -3410,7 +3410,7 @@ tfa_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
         /*
          * Without TFA we must not use PMC3.
          */
-        if (!allow_tsx_force_abort && test_bit(3, c->idxmsk)) {
+        if (!allow_tsx_force_abort && test_bit(3, c->idxmsk) && idx >= 0) {
                 c = dyn_constraint(cpuc, c, idx);
                 c->idxmsk64 &= ~(1ULL << 3);
                 c->weight--;