drm-kmod: try to avoid panic upon sysctl -a

See freebsd#280
emaste · Jan 29, 2024 · 4d96351 · 4d96351
1 parent 213b22b
commit 4d96351
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_sysfs.c b/drivers/gpu/drm/i915/gt/intel_gt_sysfs.c
@@ -3,6 +3,8 @@
  * Copyright © 2022 Intel Corporation
  */
 
+#include "opt_ddb.h"
+
 #include <drm/drm_device.h>
 #include <linux/device.h>
 #include <linux/kobject.h>
@@ -19,6 +21,14 @@
 
 bool is_object_gt(struct kobject *kobj)
 {
+	// https://github.com/freebsd/drm-kmod/issues/280
+	if (kobj->name == NULL) {
+		printf("kobj %p has NULL name\n", kobj);
+#ifdef KDB
+                kdb_backtrace();
+#endif
+		return false;
+	}
 	return !strncmp(kobj->name, "gt", 2);
 }