1 files changed, 10 insertions, 2 deletions

diff --git a/arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c b/arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c
index 0f53049719cd..27937458c231 100644
--- a/arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c
+++ b/arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c
@@ -404,8 +404,16 @@ int rdtgroup_schemata_show(struct kernfs_open_file *of,
                         for_each_alloc_enabled_rdt_resource(r)
                                 seq_printf(s, "%s:uninitialized\n", r->name);
                 } else if (rdtgrp->mode == RDT_MODE_PSEUDO_LOCKED) {
-                        seq_printf(s, "%s:%d=%x\n", rdtgrp->plr->r->name,
-                                   rdtgrp->plr->d->id, rdtgrp->plr->cbm);
+                        if (!rdtgrp->plr->d) {
+                                rdt_last_cmd_clear();
+                                rdt_last_cmd_puts("Cache domain offline\n");
+                                ret = -ENODEV;
+                        } else {
+                                seq_printf(s, "%s:%d=%x\n",
+                                           rdtgrp->plr->r->name,
+                                           rdtgrp->plr->d->id,
+                                           rdtgrp->plr->cbm);
+                        }
                 } else {
                         closid = rdtgrp->closid;
                         for_each_alloc_enabled_rdt_resource(r) {