kernel/trace/ftrace.c:6377:30: sparse: sparse: incorrect type in assignment (different address spaces)

From: kernel test robot

Date: Mon Jun 22 2026 - 09:25:12 EST

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: ef0c9f75a19532d7675384708fc8621e10850104
commit: 05dc5e9c1fe156fd9dddc4c2f81e8fc6c7e50eb5 ftrace: Add update_ftrace_direct_add function
date: 5 months ago
config: i386-randconfig-063-20260622 (https://download.01.org/0day-ci/archive/20260622/202606222112.BZ1eP56Y-lkp@xxxxxxxxx/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260622/202606222112.BZ1eP56Y-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
| Fixes: 05dc5e9c1fe1 ("ftrace: Add update_ftrace_direct_add function")
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202606222112.BZ1eP56Y-lkp@xxxxxxxxx/

sparse warnings: (new ones prefixed by >>)
kernel/trace/ftrace.c:324:12: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ftrace_ops * @@ got struct ftrace_ops [noderef] __rcu *next @@
kernel/trace/ftrace.c:324:12: sparse: expected struct ftrace_ops *
kernel/trace/ftrace.c:324:12: sparse: got struct ftrace_ops [noderef] __rcu *next
kernel/trace/ftrace.c:1093:43: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *notrace_hash @@ got struct ftrace_hash * @@
kernel/trace/ftrace.c:1093:43: sparse: expected struct ftrace_hash [noderef] __rcu *notrace_hash
kernel/trace/ftrace.c:1093:43: sparse: got struct ftrace_hash *
kernel/trace/ftrace.c:1094:43: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct ftrace_hash [noderef] __rcu *filter_hash @@ got struct ftrace_hash * @@
kernel/trace/ftrace.c:1094:43: sparse: expected struct ftrace_hash [noderef] __rcu *filter_hash
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:3420:51: 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:3421:66: 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:3427:52: 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:3428:66: 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:3441:41: 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:3442:51: 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:3445:52: 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:3449:52: 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:3464:39: 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:3465:42: 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:3473:17: 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:3479:81: 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:3483:54: 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:3485:56: 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:3515:60: 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:3516:49: 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:3555:45: 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:3557:46: 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:3559:48: 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:3561:49: 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:3567:17: 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:3568:17: 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:3574:34: 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:3575:35: 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:3577:45: 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:3578:46: 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:3583:53: 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:3584:54: 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:3631:31: 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:3632:32: 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:3647:59: 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:3648:59: 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:3653:43: 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:3654:43: 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:3656:39: 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:3657:40: 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:3699:48: 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:3700:48: 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:3701:45: 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:3702:46: 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:3988:14: 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:4005:22: 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:4694:22: 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:4697:22: 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:5108:27: 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:5110:27: 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:5490:19: 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:5634:19: 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:5640:34: 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:5905:27: 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:5907:27: 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:5988:50: 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:5991:51: 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:6007:50: 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:6051:14: 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:6101:19: 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:6166:50: 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:6204:52: 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:6352:48: 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:6357:25: 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:6373:41: 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:6377:30: 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:6384:45: 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:6389:53: 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:6742:35: 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:6750:35: 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:7535:46: 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:7536:47: 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:7540:44: 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:7558:18: 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:7558:66: 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:7610:59: 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:7611:59: 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:8000:62: 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:8001:62: 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:8045:36: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/trace/ftrace.c:8045:36: sparse: struct ftrace_ops [noderef] __rcu *
kernel/trace/ftrace.c:8045:36: sparse: struct ftrace_ops *
kernel/trace/ftrace.c:8821:14: 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:8821:14: sparse: expected struct ftrace_hash *hash
kernel/trace/ftrace.c:8821:14: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash
kernel/trace/ftrace.c:8870:14: 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:8870:14: sparse: expected struct ftrace_hash *hash
kernel/trace/ftrace.c:8870:14: 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:3475:29: sparse: sparse: dereference of noderef expression
kernel/trace/ftrace.c:3475:29: sparse: sparse: dereference of noderef expression
kernel/trace/ftrace.c:3475:29: sparse: sparse: dereference of noderef expression
kernel/trace/ftrace.c:3475:29: sparse: sparse: dereference of noderef expression
kernel/trace/ftrace.c:3475:29: sparse: sparse: dereference of noderef expression
kernel/trace/ftrace.c:3475:29: sparse: sparse: dereference of noderef expression
kernel/trace/ftrace.c:3509:29: sparse: sparse: dereference of noderef expression
kernel/trace/ftrace.c:3509:29: sparse: sparse: dereference of noderef expression
kernel/trace/ftrace.c:3509:29: sparse: sparse: dereference of noderef expression
kernel/trace/ftrace.c:3509:29: sparse: sparse: dereference of noderef expression
kernel/trace/ftrace.c:3509:29: sparse: sparse: dereference of noderef expression
kernel/trace/ftrace.c:3509:29: sparse: sparse: dereference of noderef expression
kernel/trace/ftrace.c:6069:30: sparse: sparse: dereference of noderef expression
kernel/trace/ftrace.c:6078:21: sparse: sparse: dereference of noderef expression
kernel/trace/ftrace.c:6080:17: sparse: sparse: dereference of noderef expression
kernel/trace/ftrace.c:3780:48: 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:3780:48: sparse: expected struct ftrace_hash *hash
kernel/trace/ftrace.c:3780:48: sparse: got struct ftrace_hash [noderef] __rcu *filter_hash
kernel/trace/ftrace.c:3781:49: 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:3781:49: sparse: expected struct ftrace_hash *hash
kernel/trace/ftrace.c:3781:49: sparse: got struct ftrace_hash [noderef] __rcu *notrace_hash

vim +6377 kernel/trace/ftrace.c

6319
6320 /**
6321 * update_ftrace_direct_add - Updates @ops by adding direct
6322 * callers provided in @hash
6323 * @ops: The address of the struct ftrace_ops object
6324 * @hash: The address of the struct ftrace_hash object
6325 *
6326 * This is used to add custom direct callers (ip -> addr) to @ops,
6327 * specified in @hash. The @ops will be either registered or updated.
6328 *
6329 * Returns: zero on success. Non zero on error, which includes:
6330 * -EINVAL - The @hash is empty
6331 */
6332 int update_ftrace_direct_add(struct ftrace_ops *ops, struct ftrace_hash *hash)
6333 {
6334 struct ftrace_hash *old_direct_functions = NULL;
6335 struct ftrace_hash *new_direct_functions;
6336 struct ftrace_hash *old_filter_hash;
6337 struct ftrace_hash *new_filter_hash = NULL;
6338 struct ftrace_func_entry *entry;
6339 int err = -EINVAL;
6340 int size;
6341 bool reg;
6342
6343 if (!hash_count(hash))
6344 return -EINVAL;
6345
6346 mutex_lock(&direct_mutex);
6347
6348 /* Make sure requested entries are not already registered. */
6349 size = 1 << hash->size_bits;
6350 for (int i = 0; i < size; i++) {
6351 hlist_for_each_entry(entry, &hash->buckets[i], hlist) {
6352 if (__ftrace_lookup_ip(direct_functions, entry->ip))
6353 goto out_unlock;
6354 }
6355 }
6356
6357 old_filter_hash = ops->func_hash ? ops->func_hash->filter_hash : NULL;
6358
6359 /* If there's nothing in filter_hash we need to register the ops. */
6360 reg = hash_count(old_filter_hash) == 0;
6361 if (reg) {
6362 if (ops->func || ops->trampoline)
6363 goto out_unlock;
6364 if (ops->flags & FTRACE_OPS_FL_ENABLED)
6365 goto out_unlock;
6366 }
6367
6368 err = -ENOMEM;
6369 new_filter_hash = hash_add(old_filter_hash, hash);
6370 if (!new_filter_hash)
6371 goto out_unlock;
6372
6373 new_direct_functions = hash_add(direct_functions, hash);
6374 if (!new_direct_functions)
6375 goto out_unlock;
6376
> 6377 old_direct_functions = direct_functions;
6378 rcu_assign_pointer(direct_functions, new_direct_functions);
6379
6380 if (reg) {
6381 ops->func = call_direct_funcs;
6382 ops->flags |= MULTI_FLAGS;
6383 ops->trampoline = FTRACE_REGS_ADDR;
6384 ops->local_hash.filter_hash = new_filter_hash;
6385
6386 err = register_ftrace_function_nolock(ops);
6387 if (err) {
6388 /* restore old filter on error */
6389 ops->local_hash.filter_hash = old_filter_hash;
6390
6391 /* cleanup for possible another register call */
6392 ops->func = NULL;
6393 ops->trampoline = 0;
6394 } else {
6395 new_filter_hash = old_filter_hash;
6396 }
6397 } else {
6398 err = ftrace_update_ops(ops, new_filter_hash, EMPTY_HASH);
6399 /*
6400 * new_filter_hash is dup-ed, so we need to release it anyway,
6401 * old_filter_hash either stays on error or is already released
6402 */
6403 }
6404
6405 if (err) {
6406 /* reset direct_functions and free the new one */
6407 rcu_assign_pointer(direct_functions, old_direct_functions);
6408 old_direct_functions = new_direct_functions;
6409 }
6410
6411 out_unlock:
6412 mutex_unlock(&direct_mutex);
6413
6414 if (old_direct_functions && old_direct_functions != EMPTY_HASH)
6415 call_rcu_tasks(&old_direct_functions->rcu, register_ftrace_direct_cb);
6416 free_ftrace_hash(new_filter_hash);
6417
6418 return err;
6419 }
6420

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki