Hi Maarten, kernel test robot noticed the following build warnings: [auto build test WARNING on drm/drm-next] [also build test WARNING on drm-exynos/exynos-drm-next linus/master v6.12-rc4 next-20241024] [cannot apply to tj-cgroup/for-next drm-xe/drm-xe-next akpm-mm/mm-everything drm-intel/for-linux-next drm-intel/for-linux-next-fixes drm-misc/drm-misc-next drm-tip/drm-tip] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Maarten-Lankhorst/kernel-cgroup-Add-dev-memory-accounting-cgroup/20241023-155504 base: git://anongit.freedesktop.org/drm/drm drm-next patch link: https://lore.kernel.org/r/20241023075302.27194-2-maarten.lankhorst%40linux.intel.com patch subject: [PATCH 1/7] kernel/cgroup: Add "dev" memory accounting cgroup config: i386-randconfig-061-20241025 (https://download.01.org/0day-ci/archive/20241025/202410251311.OLEnaBoD-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241025/202410251311.OLEnaBoD-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202410251311.OLEnaBoD-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> kernel/cgroup/dev.c:423:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/cgroup/dev.c:423:9: sparse: struct list_head [noderef] __rcu * kernel/cgroup/dev.c:423:9: sparse: struct list_head * >> kernel/cgroup/dev.c:423:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/cgroup/dev.c:423:9: sparse: struct list_head [noderef] __rcu * kernel/cgroup/dev.c:423:9: sparse: struct list_head * kernel/cgroup/dev.c: note: in included file (through include/linux/smp.h, include/linux/lockdep.h, include/linux/spinlock.h, ...): include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true vim +423 kernel/cgroup/dev.c 400 401 /** 402 * dev_cgroup_unregister_device() - Unregister a previously registered device. 403 * @cgdev: The device to unregister. 404 * 405 * This function undoes dev_cgroup_register_device. 406 */ 407 void dev_cgroup_unregister_device(struct dev_cgroup_device *cgdev) 408 { 409 struct devcg_device *dev; 410 struct list_head *entry; 411 412 if (!cgdev || !cgdev->priv) 413 return; 414 415 dev = cgdev->priv; 416 cgdev->priv = NULL; 417 418 spin_lock(&devcg_lock); 419 420 /* Remove from global device list */ 421 list_del_rcu(&dev->dev_node); 422 > 423 list_for_each_rcu(entry, &dev->pools) { 424 struct dev_cgroup_pool_state *pool = 425 container_of(entry, typeof(*pool), dev_node); 426 427 list_del_rcu(&pool->css_node); 428 } 429 430 /* 431 * Ensure any RCU based lookups fail. Additionally, 432 * no new pools should be added to the dead device 433 * by get_cg_pool_unlocked. 434 */ 435 dev->unregistered = true; 436 spin_unlock(&devcg_lock); 437 438 kref_put(&dev->ref, devcg_free_device); 439 } 440 EXPORT_SYMBOL_GPL(dev_cgroup_unregister_device); 441 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
