Hi Maxime, kernel test robot noticed the following build warnings:
[auto build test WARNING on 9c32cda43eb78f78c73aee4aa344b777714e259b] url: https://github.com/intel-lab-lkp/linux/commits/Maxime-B-lair/Wire-up-lsm_config_self_policy-and-lsm_config_system_policy-syscalls/20250624-225008 base: 9c32cda43eb78f78c73aee4aa344b777714e259b patch link: https://lore.kernel.org/r/20250624143211.436045-2-maxime.belair%40canonical.com patch subject: [PATCH v3 1/3] Wire up lsm_config_self_policy and lsm_config_system_policy syscalls config: riscv-randconfig-001-20250627 (https://download.01.org/0day-ci/archive/20250627/[email protected]/config) compiler: riscv32-linux-gcc (GCC) 8.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250627/[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]/ All warnings (new ones prefixed by >>): In file included from include/linux/compat.h:34, from arch/riscv/include/asm/elf.h:12, from include/linux/elf.h:6, from include/linux/module.h:19, from include/linux/bpf.h:20, from include/linux/security.h:35, from security/lsm_syscalls.c:13: arch/riscv/include/asm/syscall_wrapper.h:35:14: warning: '__se_sys_lsm_set_self_attr' alias between functions of incompatible types 'long int(ulong, ulong, ulong, ulong, ulong, ulong, ulong)' {aka 'long int(long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int)'} and 'long int(long int, long int, long int, long int)' [-Wattribute-alias] static long __se_##prefix##name(ulong, ulong, ulong, ulong, ulong, ulong, \ ^~~~~ arch/riscv/include/asm/syscall_wrapper.h:82:2: note: in expansion of macro '__SYSCALL_SE_DEFINEx' __SYSCALL_SE_DEFINEx(x, sys, name, __VA_ARGS__) \ ^~~~~~~~~~~~~~~~~~~~ include/linux/syscalls.h:235:2: note: in expansion of macro '__SYSCALL_DEFINEx' __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ include/linux/syscalls.h:227:36: note: in expansion of macro 'SYSCALL_DEFINEx' #define SYSCALL_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__) ^~~~~~~~~~~~~~~ security/lsm_syscalls.c:55:1: note: in expansion of macro 'SYSCALL_DEFINE4' SYSCALL_DEFINE4(lsm_set_self_attr, unsigned int, attr, struct lsm_ctx __user *, ^~~~~~~~~~~~~~~ arch/riscv/include/asm/syscall_wrapper.h:41:14: note: aliased declaration here static long ___se_##prefix##name(__MAP(x,__SC_LONG,__VA_ARGS__)) ^~~~~~ arch/riscv/include/asm/syscall_wrapper.h:82:2: note: in expansion of macro '__SYSCALL_SE_DEFINEx' __SYSCALL_SE_DEFINEx(x, sys, name, __VA_ARGS__) \ ^~~~~~~~~~~~~~~~~~~~ include/linux/syscalls.h:235:2: note: in expansion of macro '__SYSCALL_DEFINEx' __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ include/linux/syscalls.h:227:36: note: in expansion of macro 'SYSCALL_DEFINEx' #define SYSCALL_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__) ^~~~~~~~~~~~~~~ security/lsm_syscalls.c:55:1: note: in expansion of macro 'SYSCALL_DEFINE4' SYSCALL_DEFINE4(lsm_set_self_attr, unsigned int, attr, struct lsm_ctx __user *, ^~~~~~~~~~~~~~~ >> arch/riscv/include/asm/syscall_wrapper.h:35:14: warning: >> '__se_sys_lsm_config_system_policy' alias between functions of incompatible >> types 'long int(ulong, ulong, ulong, ulong, ulong, ulong, ulong)' {aka >> 'long int(long unsigned int, long unsigned int, long unsigned int, long >> unsigned int, long unsigned int, long unsigned int, long unsigned int)'} >> and 'long int(long int, long int, long int, long int, long int)' >> [-Wattribute-alias] static long __se_##prefix##name(ulong, ulong, ulong, ulong, ulong, ulong, \ ^~~~~ arch/riscv/include/asm/syscall_wrapper.h:82:2: note: in expansion of macro '__SYSCALL_SE_DEFINEx' __SYSCALL_SE_DEFINEx(x, sys, name, __VA_ARGS__) \ ^~~~~~~~~~~~~~~~~~~~ include/linux/syscalls.h:235:2: note: in expansion of macro '__SYSCALL_DEFINEx' __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ include/linux/syscalls.h:228:36: note: in expansion of macro 'SYSCALL_DEFINEx' #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) ^~~~~~~~~~~~~~~ security/lsm_syscalls.c:128:1: note: in expansion of macro 'SYSCALL_DEFINE5' SYSCALL_DEFINE5(lsm_config_system_policy, u32, lsm_id, u32, op, void __user *, ^~~~~~~~~~~~~~~ arch/riscv/include/asm/syscall_wrapper.h:41:14: note: aliased declaration here static long ___se_##prefix##name(__MAP(x,__SC_LONG,__VA_ARGS__)) ^~~~~~ arch/riscv/include/asm/syscall_wrapper.h:82:2: note: in expansion of macro '__SYSCALL_SE_DEFINEx' __SYSCALL_SE_DEFINEx(x, sys, name, __VA_ARGS__) \ ^~~~~~~~~~~~~~~~~~~~ include/linux/syscalls.h:235:2: note: in expansion of macro '__SYSCALL_DEFINEx' __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ include/linux/syscalls.h:228:36: note: in expansion of macro 'SYSCALL_DEFINEx' #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) ^~~~~~~~~~~~~~~ security/lsm_syscalls.c:128:1: note: in expansion of macro 'SYSCALL_DEFINE5' SYSCALL_DEFINE5(lsm_config_system_policy, u32, lsm_id, u32, op, void __user *, ^~~~~~~~~~~~~~~ >> arch/riscv/include/asm/syscall_wrapper.h:35:14: warning: >> '__se_sys_lsm_config_self_policy' alias between functions of incompatible >> types 'long int(ulong, ulong, ulong, ulong, ulong, ulong, ulong)' {aka >> 'long int(long unsigned int, long unsigned int, long unsigned int, long >> unsigned int, long unsigned int, long unsigned int, long unsigned int)'} >> and 'long int(long int, long int, long int, long int, long int)' >> [-Wattribute-alias] static long __se_##prefix##name(ulong, ulong, ulong, ulong, ulong, ulong, \ ^~~~~ arch/riscv/include/asm/syscall_wrapper.h:82:2: note: in expansion of macro '__SYSCALL_SE_DEFINEx' __SYSCALL_SE_DEFINEx(x, sys, name, __VA_ARGS__) \ ^~~~~~~~~~~~~~~~~~~~ include/linux/syscalls.h:235:2: note: in expansion of macro '__SYSCALL_DEFINEx' __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ include/linux/syscalls.h:228:36: note: in expansion of macro 'SYSCALL_DEFINEx' #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) ^~~~~~~~~~~~~~~ security/lsm_syscalls.c:122:1: note: in expansion of macro 'SYSCALL_DEFINE5' SYSCALL_DEFINE5(lsm_config_self_policy, u32, lsm_id, u32, op, void __user *, ^~~~~~~~~~~~~~~ arch/riscv/include/asm/syscall_wrapper.h:41:14: note: aliased declaration here static long ___se_##prefix##name(__MAP(x,__SC_LONG,__VA_ARGS__)) ^~~~~~ arch/riscv/include/asm/syscall_wrapper.h:82:2: note: in expansion of macro '__SYSCALL_SE_DEFINEx' __SYSCALL_SE_DEFINEx(x, sys, name, __VA_ARGS__) \ ^~~~~~~~~~~~~~~~~~~~ include/linux/syscalls.h:235:2: note: in expansion of macro '__SYSCALL_DEFINEx' __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ include/linux/syscalls.h:228:36: note: in expansion of macro 'SYSCALL_DEFINEx' #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) ^~~~~~~~~~~~~~~ security/lsm_syscalls.c:122:1: note: in expansion of macro 'SYSCALL_DEFINE5' SYSCALL_DEFINE5(lsm_config_self_policy, u32, lsm_id, u32, op, void __user *, ^~~~~~~~~~~~~~~ arch/riscv/include/asm/syscall_wrapper.h:35:14: warning: '__se_sys_lsm_list_modules' alias between functions of incompatible types 'long int(ulong, ulong, ulong, ulong, ulong, ulong, ulong)' {aka 'long int(long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int)'} and 'long int(long int, long int, long int)' [-Wattribute-alias] static long __se_##prefix##name(ulong, ulong, ulong, ulong, ulong, ulong, \ ^~~~~ arch/riscv/include/asm/syscall_wrapper.h:82:2: note: in expansion of macro '__SYSCALL_SE_DEFINEx' __SYSCALL_SE_DEFINEx(x, sys, name, __VA_ARGS__) \ ^~~~~~~~~~~~~~~~~~~~ include/linux/syscalls.h:235:2: note: in expansion of macro '__SYSCALL_DEFINEx' __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ include/linux/syscalls.h:226:36: note: in expansion of macro 'SYSCALL_DEFINEx' #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__) ^~~~~~~~~~~~~~~ security/lsm_syscalls.c:96:1: note: in expansion of macro 'SYSCALL_DEFINE3' SYSCALL_DEFINE3(lsm_list_modules, u64 __user *, ids, u32 __user *, size, ^~~~~~~~~~~~~~~ arch/riscv/include/asm/syscall_wrapper.h:41:14: note: aliased declaration here static long ___se_##prefix##name(__MAP(x,__SC_LONG,__VA_ARGS__)) ^~~~~~ arch/riscv/include/asm/syscall_wrapper.h:82:2: note: in expansion of macro '__SYSCALL_SE_DEFINEx' __SYSCALL_SE_DEFINEx(x, sys, name, __VA_ARGS__) \ ^~~~~~~~~~~~~~~~~~~~ include/linux/syscalls.h:235:2: note: in expansion of macro '__SYSCALL_DEFINEx' __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ include/linux/syscalls.h:226:36: note: in expansion of macro 'SYSCALL_DEFINEx' #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__) ^~~~~~~~~~~~~~~ security/lsm_syscalls.c:96:1: note: in expansion of macro 'SYSCALL_DEFINE3' SYSCALL_DEFINE3(lsm_list_modules, u64 __user *, ids, u32 __user *, size, ^~~~~~~~~~~~~~~ arch/riscv/include/asm/syscall_wrapper.h:35:14: warning: '__se_sys_lsm_get_self_attr' alias between functions of incompatible types 'long int(ulong, ulong, ulong, ulong, ulong, ulong, ulong)' {aka 'long int(long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int)'} and 'long int(long int, long int, long int, long int)' [-Wattribute-alias] static long __se_##prefix##name(ulong, ulong, ulong, ulong, ulong, ulong, \ ^~~~~ arch/riscv/include/asm/syscall_wrapper.h:82:2: note: in expansion of macro '__SYSCALL_SE_DEFINEx' __SYSCALL_SE_DEFINEx(x, sys, name, __VA_ARGS__) \ ^~~~~~~~~~~~~~~~~~~~ include/linux/syscalls.h:235:2: note: in expansion of macro '__SYSCALL_DEFINEx' __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ include/linux/syscalls.h:227:36: note: in expansion of macro 'SYSCALL_DEFINEx' #define SYSCALL_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__) ^~~~~~~~~~~~~~~ security/lsm_syscalls.c:77:1: note: in expansion of macro 'SYSCALL_DEFINE4' SYSCALL_DEFINE4(lsm_get_self_attr, unsigned int, attr, struct lsm_ctx __user *, ^~~~~~~~~~~~~~~ arch/riscv/include/asm/syscall_wrapper.h:41:14: note: aliased declaration here static long ___se_##prefix##name(__MAP(x,__SC_LONG,__VA_ARGS__)) ^~~~~~ arch/riscv/include/asm/syscall_wrapper.h:82:2: note: in expansion of macro '__SYSCALL_SE_DEFINEx' __SYSCALL_SE_DEFINEx(x, sys, name, __VA_ARGS__) \ ^~~~~~~~~~~~~~~~~~~~ include/linux/syscalls.h:235:2: note: in expansion of macro '__SYSCALL_DEFINEx' __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ include/linux/syscalls.h:227:36: note: in expansion of macro 'SYSCALL_DEFINEx' #define SYSCALL_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__) ^~~~~~~~~~~~~~~ security/lsm_syscalls.c:77:1: note: in expansion of macro 'SYSCALL_DEFINE4' SYSCALL_DEFINE4(lsm_get_self_attr, unsigned int, attr, struct lsm_ctx __user *, ^~~~~~~~~~~~~~~ vim +35 arch/riscv/include/asm/syscall_wrapper.h a9ad73295cc1e3 Sami Tolvanen 2024-03-11 16 a9ad73295cc1e3 Sami Tolvanen 2024-03-11 17 #define __SYSCALL_SE_DEFINEx(x, prefix, name, ...) \ a9ad73295cc1e3 Sami Tolvanen 2024-03-11 18 static long __se_##prefix##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ a9ad73295cc1e3 Sami Tolvanen 2024-03-11 19 static long __se_##prefix##name(__MAP(x,__SC_LONG,__VA_ARGS__)) a9ad73295cc1e3 Sami Tolvanen 2024-03-11 20 08d0ce30e0e4fc Sami Tolvanen 2023-07-10 21 #define SC_RISCV_REGS_TO_ARGS(x, ...) \ 08d0ce30e0e4fc Sami Tolvanen 2023-07-10 22 __MAP(x,__SC_ARGS \ 08d0ce30e0e4fc Sami Tolvanen 2023-07-10 23 ,,regs->orig_a0,,regs->a1,,regs->a2 \ 08d0ce30e0e4fc Sami Tolvanen 2023-07-10 24 ,,regs->a3,,regs->a4,,regs->a5,,regs->a6) 08d0ce30e0e4fc Sami Tolvanen 2023-07-10 25 a9ad73295cc1e3 Sami Tolvanen 2024-03-11 26 #else a9ad73295cc1e3 Sami Tolvanen 2024-03-11 27 /* a9ad73295cc1e3 Sami Tolvanen 2024-03-11 28 * Use type aliasing to ensure registers a0-a6 are correctly passed to the syscall a9ad73295cc1e3 Sami Tolvanen 2024-03-11 29 * implementation when >word-size arguments are used. a9ad73295cc1e3 Sami Tolvanen 2024-03-11 30 */ a9ad73295cc1e3 Sami Tolvanen 2024-03-11 31 #define __SYSCALL_SE_DEFINEx(x, prefix, name, ...) \ a9ad73295cc1e3 Sami Tolvanen 2024-03-11 32 __diag_push(); \ a9ad73295cc1e3 Sami Tolvanen 2024-03-11 33 __diag_ignore(GCC, 8, "-Wattribute-alias", \ a9ad73295cc1e3 Sami Tolvanen 2024-03-11 34 "Type aliasing is used to sanitize syscall arguments"); \ a9ad73295cc1e3 Sami Tolvanen 2024-03-11 @35 static long __se_##prefix##name(ulong, ulong, ulong, ulong, ulong, ulong, \ a9ad73295cc1e3 Sami Tolvanen 2024-03-11 36 ulong) \ a9ad73295cc1e3 Sami Tolvanen 2024-03-11 37 __attribute__((alias(__stringify(___se_##prefix##name)))); \ a9ad73295cc1e3 Sami Tolvanen 2024-03-11 38 __diag_pop(); \ 653650c468be21 Sami Tolvanen 2024-03-26 39 static long noinline ___se_##prefix##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ 653650c468be21 Sami Tolvanen 2024-03-26 40 __used; \ a9ad73295cc1e3 Sami Tolvanen 2024-03-11 41 static long ___se_##prefix##name(__MAP(x,__SC_LONG,__VA_ARGS__)) a9ad73295cc1e3 Sami Tolvanen 2024-03-11 42 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
