Add missing stack_depot_init() call when CONFIG_DRM_XE_DEBUG_GUC is enabled to fix the following call stack:
[] BUG: kernel NULL pointer dereference, address: 0000000000000000 [] Workqueue: drm_sched_run_job_work [gpu_sched] [] RIP: 0010:stack_depot_save_flags+0x172/0x870 [] Call Trace: [] <TASK> [] fast_req_track+0x58/0xb0 [xe]
Fixes: 16b7e65d299d ("drm/xe/guc: Track FAST_REQ H2Gs to report where errors came from") Tested-by: Sagar Ghuge sagar.ghuge@intel.com Cc: stable@vger.kernel.org # v6.17+ Signed-off-by: Lucas De Marchi lucas.demarchi@intel.com --- drivers/gpu/drm/xe/xe_guc_ct.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/xe/xe_guc_ct.c b/drivers/gpu/drm/xe/xe_guc_ct.c index 2697d711adb2b..07ae0d601910e 100644 --- a/drivers/gpu/drm/xe/xe_guc_ct.c +++ b/drivers/gpu/drm/xe/xe_guc_ct.c @@ -236,6 +236,9 @@ int xe_guc_ct_init_noalloc(struct xe_guc_ct *ct) #if IS_ENABLED(CONFIG_DRM_XE_DEBUG) spin_lock_init(&ct->dead.lock); INIT_WORK(&ct->dead.worker, ct_dead_worker_func); +#if IS_ENABLED(CONFIG_DRM_XE_DEBUG_GUC) + stack_depot_init(); +#endif #endif init_waitqueue_head(&ct->wq); init_waitqueue_head(&ct->g2h_fence_wq);