* [pcmoore-lsm:working-lsm_init_rework 9/41] security/lsm_init.c:400:25: sparse: sparse: cast removes address space '__rcu' of expression
@ 2025-09-17 12:59 kernel test robot
2025-09-17 18:02 ` Paul Moore
0 siblings, 1 reply; 2+ messages in thread
From: kernel test robot @ 2025-09-17 12:59 UTC (permalink / raw)
To: Paul Moore; +Cc: oe-kbuild-all, Kees Cook, John Johansen, Casey Schaufler
tree: https://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm.git working-lsm_init_rework
head: 8ea7358ca612bb85eef9179ae746edeb5f1dc9ac
commit: 9cb4dac58e465101fea4aa4f9169f1ea04149da8 [9/41] lsm: split the init code out into lsm_init.c
config: nios2-randconfig-r133-20250917 (https://download.01.org/0day-ci/archive/20250917/202509172014.2AWygxKf-lkp@intel.com/config)
compiler: nios2-linux-gcc (GCC) 9.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250917/202509172014.2AWygxKf-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202509172014.2AWygxKf-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> security/lsm_init.c:400:25: sparse: sparse: cast removes address space '__rcu' of expression
vim +/__rcu +400 security/lsm_init.c
348
349 static void __init ordered_lsm_init(void)
350 {
351 struct lsm_info **lsm;
352
353 if (chosen_lsm_order) {
354 if (chosen_major_lsm) {
355 pr_warn("security=%s is ignored because it is superseded by lsm=%s\n",
356 chosen_major_lsm, chosen_lsm_order);
357 chosen_major_lsm = NULL;
358 }
359 ordered_lsm_parse(chosen_lsm_order, "cmdline");
360 } else
361 ordered_lsm_parse(builtin_lsm_order, "builtin");
362
363 for (lsm = ordered_lsms; *lsm; lsm++)
364 prepare_lsm(*lsm);
365
366 report_lsm_order();
367
368 init_debug("cred blob size = %d\n", blob_sizes.lbs_cred);
369 init_debug("file blob size = %d\n", blob_sizes.lbs_file);
370 init_debug("ib blob size = %d\n", blob_sizes.lbs_ib);
371 init_debug("inode blob size = %d\n", blob_sizes.lbs_inode);
372 init_debug("ipc blob size = %d\n", blob_sizes.lbs_ipc);
373 #ifdef CONFIG_KEYS
374 init_debug("key blob size = %d\n", blob_sizes.lbs_key);
375 #endif /* CONFIG_KEYS */
376 init_debug("msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg);
377 init_debug("sock blob size = %d\n", blob_sizes.lbs_sock);
378 init_debug("superblock blob size = %d\n", blob_sizes.lbs_superblock);
379 init_debug("perf event blob size = %d\n", blob_sizes.lbs_perf_event);
380 init_debug("task blob size = %d\n", blob_sizes.lbs_task);
381 init_debug("tun device blob size = %d\n", blob_sizes.lbs_tun_dev);
382 init_debug("xattr slots = %d\n", blob_sizes.lbs_xattr_count);
383 init_debug("bdev blob size = %d\n", blob_sizes.lbs_bdev);
384 init_debug("bpf map blob size = %d\n", blob_sizes.lbs_bpf_map);
385 init_debug("bpf prog blob size = %d\n", blob_sizes.lbs_bpf_prog);
386 init_debug("bpf token blob size = %d\n", blob_sizes.lbs_bpf_token);
387
388 /*
389 * Create any kmem_caches needed for blobs
390 */
391 if (blob_sizes.lbs_file)
392 lsm_file_cache = kmem_cache_create("lsm_file_cache",
393 blob_sizes.lbs_file, 0,
394 SLAB_PANIC, NULL);
395 if (blob_sizes.lbs_inode)
396 lsm_inode_cache = kmem_cache_create("lsm_inode_cache",
397 blob_sizes.lbs_inode, 0,
398 SLAB_PANIC, NULL);
399
> 400 lsm_early_cred((struct cred *) current->cred);
401 lsm_early_task(current);
402 for (lsm = ordered_lsms; *lsm; lsm++)
403 initialize_lsm(*lsm);
404 }
405
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [pcmoore-lsm:working-lsm_init_rework 9/41] security/lsm_init.c:400:25: sparse: sparse: cast removes address space '__rcu' of expression
2025-09-17 12:59 [pcmoore-lsm:working-lsm_init_rework 9/41] security/lsm_init.c:400:25: sparse: sparse: cast removes address space '__rcu' of expression kernel test robot
@ 2025-09-17 18:02 ` Paul Moore
0 siblings, 0 replies; 2+ messages in thread
From: Paul Moore @ 2025-09-17 18:02 UTC (permalink / raw)
To: kernel test robot
Cc: oe-kbuild-all, Kees Cook, John Johansen, Casey Schaufler,
linux-security-module
On Wed, Sep 17, 2025 at 9:00 AM kernel test robot <lkp@intel.com> wrote:
>
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm.git working-lsm_init_rework
> head: 8ea7358ca612bb85eef9179ae746edeb5f1dc9ac
> commit: 9cb4dac58e465101fea4aa4f9169f1ea04149da8 [9/41] lsm: split the init code out into lsm_init.c
> config: nios2-randconfig-r133-20250917 (https://download.01.org/0day-ci/archive/20250917/202509172014.2AWygxKf-lkp@intel.com/config)
> compiler: nios2-linux-gcc (GCC) 9.5.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250917/202509172014.2AWygxKf-lkp@intel.com/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@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202509172014.2AWygxKf-lkp@intel.com/
>
> sparse warnings: (new ones prefixed by >>)
> >> security/lsm_init.c:400:25: sparse: sparse: cast removes address space '__rcu' of expression
>
> vim +/__rcu +400 security/lsm_init.c
>
> 348
> 349 static void __init ordered_lsm_init(void)
> 350 {
> 351 struct lsm_info **lsm;
> 352
> 353 if (chosen_lsm_order) {
> 354 if (chosen_major_lsm) {
> 355 pr_warn("security=%s is ignored because it is superseded by lsm=%s\n",
> 356 chosen_major_lsm, chosen_lsm_order);
> 357 chosen_major_lsm = NULL;
> 358 }
> 359 ordered_lsm_parse(chosen_lsm_order, "cmdline");
> 360 } else
> 361 ordered_lsm_parse(builtin_lsm_order, "builtin");
> 362
> 363 for (lsm = ordered_lsms; *lsm; lsm++)
> 364 prepare_lsm(*lsm);
> 365
> 366 report_lsm_order();
> 367
> 368 init_debug("cred blob size = %d\n", blob_sizes.lbs_cred);
> 369 init_debug("file blob size = %d\n", blob_sizes.lbs_file);
> 370 init_debug("ib blob size = %d\n", blob_sizes.lbs_ib);
> 371 init_debug("inode blob size = %d\n", blob_sizes.lbs_inode);
> 372 init_debug("ipc blob size = %d\n", blob_sizes.lbs_ipc);
> 373 #ifdef CONFIG_KEYS
> 374 init_debug("key blob size = %d\n", blob_sizes.lbs_key);
> 375 #endif /* CONFIG_KEYS */
> 376 init_debug("msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg);
> 377 init_debug("sock blob size = %d\n", blob_sizes.lbs_sock);
> 378 init_debug("superblock blob size = %d\n", blob_sizes.lbs_superblock);
> 379 init_debug("perf event blob size = %d\n", blob_sizes.lbs_perf_event);
> 380 init_debug("task blob size = %d\n", blob_sizes.lbs_task);
> 381 init_debug("tun device blob size = %d\n", blob_sizes.lbs_tun_dev);
> 382 init_debug("xattr slots = %d\n", blob_sizes.lbs_xattr_count);
> 383 init_debug("bdev blob size = %d\n", blob_sizes.lbs_bdev);
> 384 init_debug("bpf map blob size = %d\n", blob_sizes.lbs_bpf_map);
> 385 init_debug("bpf prog blob size = %d\n", blob_sizes.lbs_bpf_prog);
> 386 init_debug("bpf token blob size = %d\n", blob_sizes.lbs_bpf_token);
> 387
> 388 /*
> 389 * Create any kmem_caches needed for blobs
> 390 */
> 391 if (blob_sizes.lbs_file)
> 392 lsm_file_cache = kmem_cache_create("lsm_file_cache",
> 393 blob_sizes.lbs_file, 0,
> 394 SLAB_PANIC, NULL);
> 395 if (blob_sizes.lbs_inode)
> 396 lsm_inode_cache = kmem_cache_create("lsm_inode_cache",
> 397 blob_sizes.lbs_inode, 0,
> 398 SLAB_PANIC, NULL);
> 399
> > 400 lsm_early_cred((struct cred *) current->cred);
> 401 lsm_early_task(current);
> 402 for (lsm = ordered_lsms; *lsm; lsm++)
> 403 initialize_lsm(*lsm);
> 404 }
> 405
>
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki
Fixed in the lsm/working-lsm_init_rework branch in case anyone wants
to take a look. However, as the fix really doesn't have anything to
do with the IMA/EVM patch, I'll wait to repost the patchset until Mimi
has a chance to look at the IMA/EVM patch from Roberto.
--
paul-moore.com
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2025-09-17 12:59 [pcmoore-lsm:working-lsm_init_rework 9/41] security/lsm_init.c:400:25: sparse: sparse: cast removes address space '__rcu' of expression kernel test robot
2025-09-17 18:02 ` Paul Moore
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