Re: [linux-next:master 1997/7806] include/linux/lsm_hook_defs.h:408:18: error: 'uring_sqpoll_default' defined but not used

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On 10/13/2021 7:57 AM, Paul Moore wrote:
> On Wed, Oct 13, 2021 at 4:17 AM kernel test robot <lkp@xxxxxxxxx> wrote:
>> Hi Paul,
>>
>> FYI, the error/warning still remains.
> I'm not sure if anyone is monitoring the kernel test robot mail, but
> this issue isn't unique to the LSM/audit/io_uring patches, it appears
> to be a general LSM hook issue.

Looks like fallout from KP Singh's MACRO stuff for BPF.

>
>> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
>> head:   8006b911c90a4ec09958447d24c8a4c3538f5723
>> commit: cdc1404a40461faba23c5a5ad40adcc7eecc1580 [1997/7806] lsm,io_uring: add LSM hooks to io_uring
>> config: microblaze-buildonly-randconfig-r002-20211012 (attached as .config)
>> compiler: microblaze-linux-gcc (GCC) 11.2.0
>> reproduce (this is a W=1 build):
>>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>>         chmod +x ~/bin/make.cross
>>         # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=cdc1404a40461faba23c5a5ad40adcc7eecc1580
>>         git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
>>         git fetch --no-tags linux-next master
>>         git checkout cdc1404a40461faba23c5a5ad40adcc7eecc1580
>>         # save the attached .config to linux build tree
>>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=microblaze
>>
>> If you fix the issue, kindly add following tag as appropriate
>> Reported-by: kernel test robot <lkp@xxxxxxxxx>
>>
>> All errors (new ones prefixed by >>):
>>
>>>> include/linux/lsm_hook_defs.h:408:18: error: 'uring_sqpoll_default' defined but not used [-Werror=unused-const-variable=]
>>      408 | LSM_HOOK(int, 0, uring_sqpoll, void)
>>          |                  ^~~~~~~~~~~~
>>    security/security.c:706:32: note: in definition of macro 'LSM_RET_DEFAULT'
>>      706 | #define LSM_RET_DEFAULT(NAME) (NAME##_default)
>>          |                                ^~~~
>>    security/security.c:711:9: note: in expansion of macro 'DECLARE_LSM_RET_DEFAULT_int'
>>      711 |         DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
>>          |         ^~~~~~~~~~~~~~~~~~~~~~~~
>>    include/linux/lsm_hook_defs.h:408:1: note: in expansion of macro 'LSM_HOOK'
>>      408 | LSM_HOOK(int, 0, uring_sqpoll, void)
>>          | ^~~~~~~~
>>>> include/linux/lsm_hook_defs.h:407:18: error: 'uring_override_creds_default' defined but not used [-Werror=unused-const-variable=]
>>      407 | LSM_HOOK(int, 0, uring_override_creds, const struct cred *new)
>>          |                  ^~~~~~~~~~~~~~~~~~~~
>>    security/security.c:706:32: note: in definition of macro 'LSM_RET_DEFAULT'
>>      706 | #define LSM_RET_DEFAULT(NAME) (NAME##_default)
>>          |                                ^~~~
>>    security/security.c:711:9: note: in expansion of macro 'DECLARE_LSM_RET_DEFAULT_int'
>>      711 |         DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
>>          |         ^~~~~~~~~~~~~~~~~~~~~~~~
>>    include/linux/lsm_hook_defs.h:407:1: note: in expansion of macro 'LSM_HOOK'
>>      407 | LSM_HOOK(int, 0, uring_override_creds, const struct cred *new)
>>          | ^~~~~~~~
>>    include/linux/lsm_hook_defs.h:396:18: error: 'locked_down_default' defined but not used [-Werror=unused-const-variable=]
>>      396 | LSM_HOOK(int, 0, locked_down, enum lockdown_reason what)
>>          |                  ^~~~~~~~~~~
>>    security/security.c:706:32: note: in definition of macro 'LSM_RET_DEFAULT'
>>      706 | #define LSM_RET_DEFAULT(NAME) (NAME##_default)
>>          |                                ^~~~
>>    security/security.c:711:9: note: in expansion of macro 'DECLARE_LSM_RET_DEFAULT_int'
>>      711 |         DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
>>          |         ^~~~~~~~~~~~~~~~~~~~~~~~
>>    include/linux/lsm_hook_defs.h:396:1: note: in expansion of macro 'LSM_HOOK'
>>      396 | LSM_HOOK(int, 0, locked_down, enum lockdown_reason what)
>>          | ^~~~~~~~
>>    include/linux/lsm_hook_defs.h:392:18: error: 'bpf_prog_alloc_security_default' defined but not used [-Werror=unused-const-variable=]
>>      392 | LSM_HOOK(int, 0, bpf_prog_alloc_security, struct bpf_prog_aux *aux)
>>          |                  ^~~~~~~~~~~~~~~~~~~~~~~
>>    security/security.c:706:32: note: in definition of macro 'LSM_RET_DEFAULT'
>>      706 | #define LSM_RET_DEFAULT(NAME) (NAME##_default)
>>          |                                ^~~~
>>    security/security.c:711:9: note: in expansion of macro 'DECLARE_LSM_RET_DEFAULT_int'
>>      711 |         DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
>>          |         ^~~~~~~~~~~~~~~~~~~~~~~~
>>    include/linux/lsm_hook_defs.h:392:1: note: in expansion of macro 'LSM_HOOK'
>>      392 | LSM_HOOK(int, 0, bpf_prog_alloc_security, struct bpf_prog_aux *aux)
>>          | ^~~~~~~~
>>    include/linux/lsm_hook_defs.h:390:18: error: 'bpf_map_alloc_security_default' defined but not used [-Werror=unused-const-variable=]
>>      390 | LSM_HOOK(int, 0, bpf_map_alloc_security, struct bpf_map *map)
>>          |                  ^~~~~~~~~~~~~~~~~~~~~~
>>    security/security.c:706:32: note: in definition of macro 'LSM_RET_DEFAULT'
>>      706 | #define LSM_RET_DEFAULT(NAME) (NAME##_default)
>>          |                                ^~~~
>>    security/security.c:711:9: note: in expansion of macro 'DECLARE_LSM_RET_DEFAULT_int'
>>      711 |         DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
>>          |         ^~~~~~~~~~~~~~~~~~~~~~~~
>>    include/linux/lsm_hook_defs.h:390:1: note: in expansion of macro 'LSM_HOOK'
>>      390 | LSM_HOOK(int, 0, bpf_map_alloc_security, struct bpf_map *map)
>>          | ^~~~~~~~
>>    include/linux/lsm_hook_defs.h:389:18: error: 'bpf_prog_default' defined but not used [-Werror=unused-const-variable=]
>>      389 | LSM_HOOK(int, 0, bpf_prog, struct bpf_prog *prog)
>>          |                  ^~~~~~~~
>>    security/security.c:706:32: note: in definition of macro 'LSM_RET_DEFAULT'
>>      706 | #define LSM_RET_DEFAULT(NAME) (NAME##_default)
>>          |                                ^~~~
>>    security/security.c:711:9: note: in expansion of macro 'DECLARE_LSM_RET_DEFAULT_int'
>>      711 |         DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
>>          |         ^~~~~~~~~~~~~~~~~~~~~~~~
>>    include/linux/lsm_hook_defs.h:389:1: note: in expansion of macro 'LSM_HOOK'
>>      389 | LSM_HOOK(int, 0, bpf_prog, struct bpf_prog *prog)
>>          | ^~~~~~~~
>>    include/linux/lsm_hook_defs.h:388:18: error: 'bpf_map_default' defined but not used [-Werror=unused-const-variable=]
>>      388 | LSM_HOOK(int, 0, bpf_map, struct bpf_map *map, fmode_t fmode)
>>          |                  ^~~~~~~
>>    security/security.c:706:32: note: in definition of macro 'LSM_RET_DEFAULT'
>>      706 | #define LSM_RET_DEFAULT(NAME) (NAME##_default)
>>          |                                ^~~~
>>    security/security.c:711:9: note: in expansion of macro 'DECLARE_LSM_RET_DEFAULT_int'
>>      711 |         DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
>>          |         ^~~~~~~~~~~~~~~~~~~~~~~~
>>    include/linux/lsm_hook_defs.h:388:1: note: in expansion of macro 'LSM_HOOK'
>>      388 | LSM_HOOK(int, 0, bpf_map, struct bpf_map *map, fmode_t fmode)
>>          | ^~~~~~~~
>>    include/linux/lsm_hook_defs.h:387:18: error: 'bpf_default' defined but not used [-Werror=unused-const-variable=]
>>      387 | LSM_HOOK(int, 0, bpf, int cmd, union bpf_attr *attr, unsigned int size)
>>          |                  ^~~
>>    security/security.c:706:32: note: in definition of macro 'LSM_RET_DEFAULT'
>>      706 | #define LSM_RET_DEFAULT(NAME) (NAME##_default)
>>          |                                ^~~~
>>    security/security.c:711:9: note: in expansion of macro 'DECLARE_LSM_RET_DEFAULT_int'
>>      711 |         DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
>>          |         ^~~~~~~~~~~~~~~~~~~~~~~~
>>    include/linux/lsm_hook_defs.h:387:1: note: in expansion of macro 'LSM_HOOK'
>>      387 | LSM_HOOK(int, 0, bpf, int cmd, union bpf_attr *attr, unsigned int size)
>>          | ^~~~~~~~
>>    include/linux/lsm_hook_defs.h:382:18: error: 'audit_rule_match_default' defined but not used [-Werror=unused-const-variable=]
>>      382 | LSM_HOOK(int, 0, audit_rule_match, u32 secid, u32 field, u32 op, void *lsmrule)
>>          |                  ^~~~~~~~~~~~~~~~
>>    security/security.c:706:32: note: in definition of macro 'LSM_RET_DEFAULT'
>>      706 | #define LSM_RET_DEFAULT(NAME) (NAME##_default)
>>          |                                ^~~~
>>    security/security.c:711:9: note: in expansion of macro 'DECLARE_LSM_RET_DEFAULT_int'
>>      711 |         DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
>>          |         ^~~~~~~~~~~~~~~~~~~~~~~~
>>    include/linux/lsm_hook_defs.h:382:1: note: in expansion of macro 'LSM_HOOK'
>>      382 | LSM_HOOK(int, 0, audit_rule_match, u32 secid, u32 field, u32 op, void *lsmrule)
>>          | ^~~~~~~~
>>    include/linux/lsm_hook_defs.h:381:18: error: 'audit_rule_known_default' defined but not used [-Werror=unused-const-variable=]
>>      381 | LSM_HOOK(int, 0, audit_rule_known, struct audit_krule *krule)
>>          |                  ^~~~~~~~~~~~~~~~
>>    security/security.c:706:32: note: in definition of macro 'LSM_RET_DEFAULT'
>>      706 | #define LSM_RET_DEFAULT(NAME) (NAME##_default)
>>
>>
>> vim +/uring_sqpoll_default +408 include/linux/lsm_hook_defs.h
>>
>>    405
>>    406  #ifdef CONFIG_IO_URING
>>  > 407  LSM_HOOK(int, 0, uring_override_creds, const struct cred *new)
>>  > 408  LSM_HOOK(int, 0, uring_sqpoll, void)
>>
>> ---
>> 0-DAY CI Kernel Test Service, Intel Corporation
>> https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
>
>






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