>
> Hi Al,
>
> FYI, the error/warning still remains.
hi AI, kindly ignore this, the warning below may be caused by gcc-8.1 upgrade.
we will double check to reduce noises.
>
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head: 0044cdeb731313f20b63cb5644de7588731de32b
> commit: a0d32ad366bb4235267380b341fcae8307f51044 switch
> sparc_remap_file_pages() to SYSCALL_DEFINE
> date: 2 months ago
> config: sparc-defconfig (attached as .config)
> compiler: sparc-linux-gcc (GCC) 8.1.0
> reproduce:
> wget https://raw.githubusercontent.com/intel/lkp-
> tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> git checkout a0d32ad366bb4235267380b341fcae8307f51044
> # save the attached .config to linux build tree
> make.cross ARCH=sparc
>
> All errors (new ones prefixed by >>):
>
> In file included from arch/sparc/kernel/sys_sparc_32.c:21:
> include/linux/syscalls.h:211:18: error: 'sys_mmap2' alias between functions of
> incompatible types 'long 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, long int)' [-Werror=attribute-alias]
> asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:201:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc/kernel/sys_sparc_32.c:101:1: note: in expansion of macro
> 'SYSCALL_DEFINE6'
> SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len,
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:215:18: note: aliased declaration here
> asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:201:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc/kernel/sys_sparc_32.c:101:1: note: in expansion of macro
> 'SYSCALL_DEFINE6'
> SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len,
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:211:18: error: 'sys_getdomainname' alias between
> functions of incompatible types 'long int(char *, int)' and 'long int(long int, long
> int)' [-Werror=attribute-alias]
> asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:197:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc/kernel/sys_sparc_32.c:205:1: note: in expansion of macro
> 'SYSCALL_DEFINE2'
> SYSCALL_DEFINE2(getdomainname, char __user *, name, int, len)
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:215:18: note: aliased declaration here
> asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:197:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc/kernel/sys_sparc_32.c:205:1: note: in expansion of macro
> 'SYSCALL_DEFINE2'
> SYSCALL_DEFINE2(getdomainname, char __user *, name, int, len)
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:211:18: error: 'sys_rt_sigaction' alias between functions
> of incompatible types 'long int(int, const struct sigaction *, struct sigaction *, void
> *, size_t)' {aka 'long int(int, const struct sigaction *, struct sigaction *, void *,
> unsigned int)'} and 'long int(long int, long int, long int, long int, long int)' [-
> Werror=attribute-alias]
> asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:200:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc/kernel/sys_sparc_32.c:176:1: note: in expansion of macro
> 'SYSCALL_DEFINE5'
> SYSCALL_DEFINE5(rt_sigaction, int, sig,
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:215:18: note: aliased declaration here
> asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:200:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc/kernel/sys_sparc_32.c:176:1: note: in expansion of macro
> 'SYSCALL_DEFINE5'
> SYSCALL_DEFINE5(rt_sigaction, int, sig,
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:211:18: error: 'sys_sparc_sigaction' alias between
> functions of incompatible types 'long int(int, struct old_sigaction *, struct
> old_sigaction *)' and 'long int(long int, long int, long int)' [-Werror=attribute-alias]
> asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:198:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc/kernel/sys_sparc_32.c:168:1: note: in expansion of macro
> 'SYSCALL_DEFINE3'
> SYSCALL_DEFINE3(sparc_sigaction, int, sig,
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:215:18: note: aliased declaration here
> asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:198:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc/kernel/sys_sparc_32.c:168:1: note: in expansion of macro
> 'SYSCALL_DEFINE3'
> SYSCALL_DEFINE3(sparc_sigaction, int, sig,
> ^~~~~~~~~~~~~~~
> >> include/linux/syscalls.h:211:18: error: 'sys_sparc_remap_file_pages' alias
> between functions of incompatible types 'long 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)' [-Werror=attribute-alias]
> asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:200:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc/kernel/sys_sparc_32.c:119:1: note: in expansion of macro
> 'SYSCALL_DEFINE5'
> SYSCALL_DEFINE5(sparc_remap_file_pages, unsigned long, start, unsigned
> long, size,
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:215:18: note: aliased declaration here
> asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:200:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc/kernel/sys_sparc_32.c:119:1: note: in expansion of macro
> 'SYSCALL_DEFINE5'
> SYSCALL_DEFINE5(sparc_remap_file_pages, unsigned long, start, unsigned
> long, size,
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:211:18: error: 'sys_mmap' alias between functions of
> incompatible types 'long 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, long int)' [-Werror=attribute-alias]
> asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:201:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc/kernel/sys_sparc_32.c:111:1: note: in expansion of macro
> 'SYSCALL_DEFINE6'
> SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len,
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:215:18: note: aliased declaration here
> asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:201:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc/kernel/sys_sparc_32.c:111:1: note: in expansion of macro
> 'SYSCALL_DEFINE6'
> SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len,
> ^~~~~~~~~~~~~~~
> cc1: all warnings being treated as errors
> --
> In file included from arch/sparc//kernel/sys_sparc_32.c:21:
> include/linux/syscalls.h:211:18: error: 'sys_mmap2' alias between functions of
> incompatible types 'long 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, long int)' [-Werror=attribute-alias]
> asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:201:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc//kernel/sys_sparc_32.c:101:1: note: in expansion of macro
> 'SYSCALL_DEFINE6'
> SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len,
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:215:18: note: aliased declaration here
> asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:201:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc//kernel/sys_sparc_32.c:101:1: note: in expansion of macro
> 'SYSCALL_DEFINE6'
> SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len,
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:211:18: error: 'sys_getdomainname' alias between
> functions of incompatible types 'long int(char *, int)' and 'long int(long int, long
> int)' [-Werror=attribute-alias]
> asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:197:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc//kernel/sys_sparc_32.c:205:1: note: in expansion of macro
> 'SYSCALL_DEFINE2'
> SYSCALL_DEFINE2(getdomainname, char __user *, name, int, len)
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:215:18: note: aliased declaration here
> asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:197:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc//kernel/sys_sparc_32.c:205:1: note: in expansion of macro
> 'SYSCALL_DEFINE2'
> SYSCALL_DEFINE2(getdomainname, char __user *, name, int, len)
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:211:18: error: 'sys_rt_sigaction' alias between functions
> of incompatible types 'long int(int, const struct sigaction *, struct sigaction *, void
> *, size_t)' {aka 'long int(int, const struct sigaction *, struct sigaction *, void *,
> unsigned int)'} and 'long int(long int, long int, long int, long int, long int)' [-
> Werror=attribute-alias]
> asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:200:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc//kernel/sys_sparc_32.c:176:1: note: in expansion of macro
> 'SYSCALL_DEFINE5'
> SYSCALL_DEFINE5(rt_sigaction, int, sig,
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:215:18: note: aliased declaration here
> asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:200:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc//kernel/sys_sparc_32.c:176:1: note: in expansion of macro
> 'SYSCALL_DEFINE5'
> SYSCALL_DEFINE5(rt_sigaction, int, sig,
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:211:18: error: 'sys_sparc_sigaction' alias between
> functions of incompatible types 'long int(int, struct old_sigaction *, struct
> old_sigaction *)' and 'long int(long int, long int, long int)' [-Werror=attribute-alias]
> asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:198:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc//kernel/sys_sparc_32.c:168:1: note: in expansion of macro
> 'SYSCALL_DEFINE3'
> SYSCALL_DEFINE3(sparc_sigaction, int, sig,
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:215:18: note: aliased declaration here
> asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:198:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc//kernel/sys_sparc_32.c:168:1: note: in expansion of macro
> 'SYSCALL_DEFINE3'
> SYSCALL_DEFINE3(sparc_sigaction, int, sig,
> ^~~~~~~~~~~~~~~
> >> include/linux/syscalls.h:211:18: error: 'sys_sparc_remap_file_pages' alias
> between functions of incompatible types 'long 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)' [-Werror=attribute-alias]
> asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:200:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc//kernel/sys_sparc_32.c:119:1: note: in expansion of macro
> 'SYSCALL_DEFINE5'
> SYSCALL_DEFINE5(sparc_remap_file_pages, unsigned long, start, unsigned
> long, size,
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:215:18: note: aliased declaration here
> asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:200:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc//kernel/sys_sparc_32.c:119:1: note: in expansion of macro
> 'SYSCALL_DEFINE5'
> SYSCALL_DEFINE5(sparc_remap_file_pages, unsigned long, start, unsigned
> long, size,
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:211:18: error: 'sys_mmap' alias between functions of
> incompatible types 'long 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, long int)' [-Werror=attribute-alias]
> asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:201:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc//kernel/sys_sparc_32.c:111:1: note: in expansion of macro
> 'SYSCALL_DEFINE6'
> SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len,
> ^~~~~~~~~~~~~~~
> include/linux/syscalls.h:215:18: note: aliased declaration here
> asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
> ^~~
> include/linux/syscalls.h:207:2: note: in expansion of macro
> '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:201:36: note: in expansion of macro
> 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name,
> __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> arch/sparc//kernel/sys_sparc_32.c:111:1: note: in expansion of macro
> 'SYSCALL_DEFINE6'
> SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len,
> ^~~~~~~~~~~~~~~
> cc1: all warnings being treated as errors
>
> vim +211 include/linux/syscalls.h
>
> 609320c8 Yonghong Song 2017-09-07 204
> bed1ffca Frederic Weisbecker 2009-03-13 205 #define SYSCALL_DEFINEx(x,
> sname, ...) \
> 99e621f7 Al Viro 2013-03-05 206 SYSCALL_METADATA(sname, x,
> __VA_ARGS__) \
> bed1ffca Frederic Weisbecker 2009-03-13 @207 __SYSCALL_DEFINEx(x,
> sname, __VA_ARGS__)
> bed1ffca Frederic Weisbecker 2009-03-13 208
> 2cf09666 Al Viro 2013-01-21 209 #define __PROTECT(...)
> asmlinkage_protect(__VA_ARGS__)
> bed1ffca Frederic Weisbecker 2009-03-13 210 #define __SYSCALL_DEFINEx(x,
> name, ...) \
> 83460ec8 Andi Kleen 2013-11-12 @211 asmlinkage long
> sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
> 83460ec8 Andi Kleen 2013-11-12 212
> __attribute__((alias(__stringify(SyS##name)))); \
> 07fe6e00 Al Viro 2013-01-21 213 static inline long
> SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
> f9597f24 Sergei Trofimovich 2013-09-11 214 asmlinkage long
> SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
> 07fe6e00 Al Viro 2013-01-21 215 asmlinkage long
> SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
> 1a94bc34 Heiko Carstens 2009-01-14 216 {
> \
> 2cf09666 Al Viro 2013-01-21 217 long ret =
> SYSC##name(__MAP(x,__SC_CAST,__VA_ARGS__)); \
> 07fe6e00 Al Viro 2013-01-21 218
> __MAP(x,__SC_TEST,__VA_ARGS__); \
> 2cf09666 Al Viro 2013-01-21 219 __PROTECT(x,
> ret,__MAP(x,__SC_ARGS,__VA_ARGS__)); \
> 2cf09666 Al Viro 2013-01-21 220 return ret;
> \
> 1a94bc34 Heiko Carstens 2009-01-14 221 }
> \
> 07fe6e00 Al Viro 2013-01-21 222 static inline long
> SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__))
> 1a94bc34 Heiko Carstens 2009-01-14 223
>
> :::::: The code at line 211 was first introduced by commit
> :::::: 83460ec8dcac14142e7860a01fa59c267ac4657c syscalls.h: use gcc alias
> instead of assembler aliases for syscalls
>
> :::::: TO: Andi Kleen <[email protected]>
> :::::: CC: Linus Torvalds <[email protected]>
>
> ---
> 0-DAY kernel test infrastructure Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all Intel Corporation