Hi Jiri, kernel test robot noticed the following build warnings:
[auto build test WARNING on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Jiri-Olsa/ftrace-Fix-direct_functions-leak-in-update_ftrace_direct_del/20260202-160850 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20260202075849.1684369-1-jolsa%40kernel.org patch subject: [PATCH bpf-next] ftrace: Fix direct_functions leak in update_ftrace_direct_del config: i386-randconfig-r123-20260202 (https://download.01.org/0day-ci/archive/20260203/[email protected]/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260203/[email protected]/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 <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ sparse warnings: (new ones prefixed by >>) kernel/trace/ftrace.c:1094:43: sparse: got struct ftrace_hash * kernel/trace/ftrace.c:1326:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:1326:40: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:1326:40: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:1327:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:1327:40: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:1327:40: sparse: got struct ftrace_hash [noderef] __rcu *notrace_hash kernel/trace/ftrace.c:1328:37: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *filter_hash @@ got struct ftrace_hash * @@ kernel/trace/ftrace.c:1328:37: sparse: expected struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:1328:37: sparse: got struct ftrace_hash * kernel/trace/ftrace.c:1329:38: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *notrace_hash @@ got struct ftrace_hash * @@ kernel/trace/ftrace.c:1329:38: sparse: expected struct ftrace_hash [noderef] __rcu *notrace_hash kernel/trace/ftrace.c:1329:38: sparse: got struct ftrace_hash * kernel/trace/ftrace.c:2141:54: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct ftrace_hash *old_hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:2141:54: sparse: expected struct ftrace_hash *old_hash kernel/trace/ftrace.c:2141:54: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:1533:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/trace/ftrace.c:1533:9: sparse: struct ftrace_hash [noderef] __rcu * kernel/trace/ftrace.c:1533:9: sparse: struct ftrace_hash * kernel/trace/ftrace.c:1549:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:1550:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:1551:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:1552:42: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:1723:18: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_ops *ops @@ got struct ftrace_ops [noderef] __rcu *[addressable] [toplevel] ftrace_ops_list @@ kernel/trace/ftrace.c:1724:43: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_ops *ops @@ got struct ftrace_ops [noderef] __rcu *next @@ kernel/trace/ftrace.c:1785:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:1786:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *notrace_hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:2119:50: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:2130:50: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:2613:53: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *static [toplevel] direct_functions @@ got struct ftrace_hash * @@ kernel/trace/ftrace.c:2624:36: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *static [toplevel] direct_functions @@ kernel/trace/ftrace.c:3425:51: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct ftrace_hash *B @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:3426:66: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct ftrace_hash **orig_hash @@ got struct ftrace_hash [noderef] __rcu ** @@ kernel/trace/ftrace.c:3432:52: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct ftrace_hash *B @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:3433:66: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct ftrace_hash **orig_hash @@ got struct ftrace_hash [noderef] __rcu ** @@ kernel/trace/ftrace.c:3446:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:3447:51: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *src @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:3450:52: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct ftrace_hash *notrace_hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:3454:52: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *src @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:3469:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:3470:42: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:3478:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:3484:81: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:3488:54: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct ftrace_hash *notrace_hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:3490:56: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct ftrace_hash *new_hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:3520:60: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct ftrace_hash *new_hash1 @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:3521:49: sparse: sparse: incorrect type in argument 3 (different address spaces) @@ expected struct ftrace_hash *new_hash2 @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:3560:45: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *filter_hash @@ got struct ftrace_hash * @@ kernel/trace/ftrace.c:3562:46: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *notrace_hash @@ got struct ftrace_hash * @@ kernel/trace/ftrace.c:3564:48: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *filter_hash @@ got struct ftrace_hash * @@ kernel/trace/ftrace.c:3566:49: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *notrace_hash @@ got struct ftrace_hash * @@ kernel/trace/ftrace.c:3572:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:3573:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:3579:34: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *save_filter_hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:3580:35: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *save_notrace_hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:3582:45: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *filter_hash @@ got struct ftrace_hash *[addressable] filter_hash @@ kernel/trace/ftrace.c:3583:46: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *notrace_hash @@ got struct ftrace_hash *[addressable] notrace_hash @@ kernel/trace/ftrace.c:3588:53: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *filter_hash @@ got struct ftrace_hash *save_filter_hash @@ kernel/trace/ftrace.c:3589:54: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *notrace_hash @@ got struct ftrace_hash *save_notrace_hash @@ kernel/trace/ftrace.c:3636:31: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *filter_hash @@ got struct ftrace_hash * @@ kernel/trace/ftrace.c:3637:32: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *notrace_hash @@ got struct ftrace_hash * @@ kernel/trace/ftrace.c:3652:59: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *[addressable] filter_hash @@ kernel/trace/ftrace.c:3653:59: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *[addressable] notrace_hash @@ kernel/trace/ftrace.c:3658:43: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *[addressable] filter_hash @@ kernel/trace/ftrace.c:3659:43: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *[addressable] notrace_hash @@ kernel/trace/ftrace.c:3661:39: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *[addressable] filter_hash @@ got struct ftrace_hash * @@ kernel/trace/ftrace.c:3662:40: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *[addressable] notrace_hash @@ got struct ftrace_hash * @@ kernel/trace/ftrace.c:3704:48: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:3705:48: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:3706:45: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *filter_hash @@ got struct ftrace_hash * @@ kernel/trace/ftrace.c:3707:46: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *notrace_hash @@ got struct ftrace_hash * @@ kernel/trace/ftrace.c:3993:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:4010:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:4699:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:4702:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:5113:27: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash **orig_hash @@ got struct ftrace_hash [noderef] __rcu ** @@ kernel/trace/ftrace.c:5115:27: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash **orig_hash @@ got struct ftrace_hash [noderef] __rcu ** @@ kernel/trace/ftrace.c:5495:19: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash **orig_hash @@ got struct ftrace_hash [noderef] __rcu ** @@ kernel/trace/ftrace.c:5639:19: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash **orig_hash @@ got struct ftrace_hash [noderef] __rcu ** @@ kernel/trace/ftrace.c:5645:34: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *filter_hash @@ got struct ftrace_hash *[assigned] old_hash @@ kernel/trace/ftrace.c:5910:27: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash **orig_hash @@ got struct ftrace_hash [noderef] __rcu ** @@ kernel/trace/ftrace.c:5912:27: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash **orig_hash @@ got struct ftrace_hash [noderef] __rcu ** @@ kernel/trace/ftrace.c:5993:50: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *static [toplevel] direct_functions @@ kernel/trace/ftrace.c:5996:51: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *static [toplevel] direct_functions @@ kernel/trace/ftrace.c:6012:50: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:6056:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:6106:19: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *free_hash @@ got struct ftrace_hash [noderef] __rcu *static [toplevel] direct_functions @@ kernel/trace/ftrace.c:6171:50: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:6209:52: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *static [addressable] [assigned] [toplevel] direct_functions @@ kernel/trace/ftrace.c:6357:48: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *static [addressable] [assigned] [toplevel] direct_functions @@ kernel/trace/ftrace.c:6362:25: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *old_filter_hash @@ got struct ftrace_hash [noderef] __rcu * @@ kernel/trace/ftrace.c:6378:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *a @@ got struct ftrace_hash [noderef] __rcu *static [addressable] [assigned] [toplevel] direct_functions @@ kernel/trace/ftrace.c:6382:30: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *old_direct_functions @@ got struct ftrace_hash [noderef] __rcu *static [addressable] [assigned] [toplevel] direct_functions @@ kernel/trace/ftrace.c:6389:45: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *filter_hash @@ got struct ftrace_hash *[assigned] new_filter_hash @@ kernel/trace/ftrace.c:6394:53: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *filter_hash @@ got struct ftrace_hash *old_filter_hash @@ kernel/trace/ftrace.c:6489:30: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/trace/ftrace.c:6489:30: sparse: struct ftrace_hash [noderef] __rcu * kernel/trace/ftrace.c:6489:30: sparse: struct ftrace_hash * kernel/trace/ftrace.c:6503:50: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *static [addressable] [assigned] [toplevel] direct_functions @@ kernel/trace/ftrace.c:6514:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *a @@ got struct ftrace_hash [noderef] __rcu *static [addressable] [assigned] [toplevel] direct_functions @@ >> kernel/trace/ftrace.c:6540:38: sparse: sparse: incorrect type in assignment >> (different address spaces) @@ expected struct ftrace_hash *[assigned] >> old_direct_functions @@ got struct ftrace_hash [noderef] __rcu *static >> [addressable] [assigned] [toplevel] direct_functions @@ kernel/trace/ftrace.c:6589:30: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/trace/ftrace.c:6589:30: sparse: struct ftrace_hash [noderef] __rcu * kernel/trace/ftrace.c:6589:30: sparse: struct ftrace_hash * kernel/trace/ftrace.c:6969:35: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash **orig_hash @@ got struct ftrace_hash [noderef] __rcu ** @@ kernel/trace/ftrace.c:6977:35: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash **orig_hash @@ got struct ftrace_hash [noderef] __rcu ** @@ kernel/trace/ftrace.c:7762:46: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:7763:47: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:7767:44: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:7785:18: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_ops *ops @@ got struct ftrace_ops [noderef] __rcu *[addressable] [toplevel] ftrace_ops_list @@ kernel/trace/ftrace.c:7785:66: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_ops *ops @@ got struct ftrace_ops [noderef] __rcu *next @@ kernel/trace/ftrace.c:7837:59: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:7838:59: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:8227:62: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:8228:62: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:8272:36: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/trace/ftrace.c:8272:36: sparse: struct ftrace_ops [noderef] __rcu * kernel/trace/ftrace.c:8272:36: sparse: struct ftrace_ops * kernel/trace/ftrace.c:9048:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:9048:14: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:9048:14: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:9097:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:9097:14: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:9097:14: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:230:20: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:230:20: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:230:20: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:3480:29: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:3480:29: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:3480:29: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:3480:29: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:3480:29: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:3480:29: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:3514:29: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:3514:29: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:3514:29: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:3514:29: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:3514:29: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:3514:29: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:6074:30: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:6083:21: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:6085:17: sparse: sparse: dereference of noderef expression kernel/trace/ftrace.c:3785:48: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *filter_hash @@ kernel/trace/ftrace.c:3785:48: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:3785:48: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash kernel/trace/ftrace.c:3786:49: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct ftrace_hash *hash @@ got struct ftrace_hash [noderef] __rcu *notrace_hash @@ kernel/trace/ftrace.c:3786:49: sparse: expected struct ftrace_hash *hash kernel/trace/ftrace.c:3786:49: sparse: got struct ftrace_hash [noderef] __rcu *notrace_hash vim +6540 kernel/trace/ftrace.c 6457 6458 /** 6459 * update_ftrace_direct_del - Updates @ops by removing its direct 6460 * callers provided in @hash 6461 * @ops: The address of the struct ftrace_ops object 6462 * @hash: The address of the struct ftrace_hash object 6463 * 6464 * This is used to delete custom direct callers (ip -> addr) in 6465 * @ops specified via @hash. The @ops will be either unregistered 6466 * updated. 6467 * 6468 * Returns: zero on success. Non zero on error, which includes: 6469 * -EINVAL - The @hash is empty 6470 * -EINVAL - The @ops is not registered 6471 */ 6472 int update_ftrace_direct_del(struct ftrace_ops *ops, struct ftrace_hash *hash) 6473 { 6474 struct ftrace_hash *old_direct_functions = NULL; 6475 struct ftrace_hash *new_direct_functions; 6476 struct ftrace_hash *new_filter_hash = NULL; 6477 struct ftrace_hash *old_filter_hash; 6478 struct ftrace_func_entry *entry; 6479 struct ftrace_func_entry *del; 6480 unsigned long size; 6481 int err = -EINVAL; 6482 6483 if (!hash_count(hash)) 6484 return -EINVAL; 6485 if (check_direct_multi(ops)) 6486 return -EINVAL; 6487 if (!(ops->flags & FTRACE_OPS_FL_ENABLED)) 6488 return -EINVAL; 6489 if (direct_functions == EMPTY_HASH) 6490 return -EINVAL; 6491 6492 mutex_lock(&direct_mutex); 6493 6494 old_filter_hash = ops->func_hash ? ops->func_hash->filter_hash : NULL; 6495 6496 if (!hash_count(old_filter_hash)) 6497 goto out_unlock; 6498 6499 /* Make sure requested entries are already registered. */ 6500 size = 1 << hash->size_bits; 6501 for (int i = 0; i < size; i++) { 6502 hlist_for_each_entry(entry, &hash->buckets[i], hlist) { 6503 del = __ftrace_lookup_ip(direct_functions, entry->ip); 6504 if (!del || del->direct != entry->direct) 6505 goto out_unlock; 6506 } 6507 } 6508 6509 err = -ENOMEM; 6510 new_filter_hash = hash_sub(old_filter_hash, hash); 6511 if (!new_filter_hash) 6512 goto out_unlock; 6513 6514 new_direct_functions = hash_sub(direct_functions, hash); 6515 if (!new_direct_functions) 6516 goto out_unlock; 6517 6518 /* If there's nothing left, we need to unregister the ops. */ 6519 if (ftrace_hash_empty(new_filter_hash)) { 6520 err = unregister_ftrace_function(ops); 6521 if (!err) { 6522 /* cleanup for possible another register call */ 6523 ops->func = NULL; 6524 ops->trampoline = 0; 6525 ftrace_free_filter(ops); 6526 ops->func_hash->filter_hash = NULL; 6527 } 6528 } else { 6529 err = ftrace_update_ops(ops, new_filter_hash, EMPTY_HASH); 6530 /* 6531 * new_filter_hash is dup-ed, so we need to release it anyway, 6532 * old_filter_hash either stays on error or is already released 6533 */ 6534 } 6535 6536 if (err) { 6537 /* free the new_direct_functions */ 6538 old_direct_functions = new_direct_functions; 6539 } else { > 6540 old_direct_functions = direct_functions; 6541 rcu_assign_pointer(direct_functions, new_direct_functions); 6542 } 6543 6544 out_unlock: 6545 mutex_unlock(&direct_mutex); 6546 6547 if (old_direct_functions && old_direct_functions != EMPTY_HASH) 6548 call_rcu_tasks(&old_direct_functions->rcu, register_ftrace_direct_cb); 6549 free_ftrace_hash(new_filter_hash); 6550 6551 return err; 6552 } 6553 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
