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Date: Thu, 28 Jan 2021 10:29:58 +0800
From: kernel test robot <lkp@...el.com>
To: Alejandro Colomar <alx.manpages@...il.com>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
x86@...nel.org, Thomas Gleixner <tglx@...utronix.de>
Subject: [tip:locking/core 1/3] include/linux/syscalls.h:238:18: error:
conflicting types for 'sys_futex'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking/core
head: 59ea5f1508e15cecddd8e2ca828f7962ea37adab
commit: 3018a08401300005536817507dd14c2a7c4ffa69 [1/3] futex: Change utime parameter to be 'const ... *'
config: nios2-3c120_defconfig (attached as .config)
compiler: nios2-linux-gcc (GCC) 9.3.0
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/tip/tip.git/commit/?id=3018a08401300005536817507dd14c2a7c4ffa69
git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
git fetch --no-tags tip locking/core
git checkout 3018a08401300005536817507dd14c2a7c4ffa69
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nios2
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
In file included from kernel/futex.c:37:
>> include/linux/syscalls.h:238:18: error: conflicting types for 'sys_futex'
238 | asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
| ^~~
include/linux/syscalls.h:224:2: note: in expansion of macro '__SYSCALL_DEFINEx'
224 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
| ^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:218:36: note: in expansion of macro 'SYSCALL_DEFINEx'
218 | #define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
kernel/futex.c:3792:1: note: in expansion of macro 'SYSCALL_DEFINE6'
3792 | SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val,
| ^~~~~~~~~~~~~~~
include/linux/syscalls.h:585:17: note: previous declaration of 'sys_futex' was here
585 | asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val,
| ^~~~~~~~~
>> include/linux/syscalls.h:238:18: error: conflicting types for 'sys_futex_time32'
238 | asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
| ^~~
include/linux/syscalls.h:224:2: note: in expansion of macro '__SYSCALL_DEFINEx'
224 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
| ^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:218:36: note: in expansion of macro 'SYSCALL_DEFINEx'
218 | #define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
kernel/futex.c:3988:1: note: in expansion of macro 'SYSCALL_DEFINE6'
3988 | SYSCALL_DEFINE6(futex_time32, u32 __user *, uaddr, int, op, u32, val,
| ^~~~~~~~~~~~~~~
include/linux/syscalls.h:588:17: note: previous declaration of 'sys_futex_time32' was here
588 | asmlinkage long sys_futex_time32(u32 __user *uaddr, int op, u32 val,
| ^~~~~~~~~~~~~~~~
vim +/sys_futex +238 include/linux/syscalls.h
bed1ffca022cc876 Frederic Weisbecker 2009-03-13 212
6c5979631b4b03c9 Heiko Carstens 2009-02-11 213 #define SYSCALL_DEFINE1(name, ...) SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
6c5979631b4b03c9 Heiko Carstens 2009-02-11 214 #define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name, __VA_ARGS__)
6c5979631b4b03c9 Heiko Carstens 2009-02-11 215 #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
6c5979631b4b03c9 Heiko Carstens 2009-02-11 216 #define SYSCALL_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
6c5979631b4b03c9 Heiko Carstens 2009-02-11 217 #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__)
6c5979631b4b03c9 Heiko Carstens 2009-02-11 @218 #define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)
1a94bc34768e463a Heiko Carstens 2009-01-14 219
609320c8a22715b7 Yonghong Song 2017-09-07 220 #define SYSCALL_DEFINE_MAXARGS 6
609320c8a22715b7 Yonghong Song 2017-09-07 221
bed1ffca022cc876 Frederic Weisbecker 2009-03-13 222 #define SYSCALL_DEFINEx(x, sname, ...) \
99e621f796d7f034 Al Viro 2013-03-05 223 SYSCALL_METADATA(sname, x, __VA_ARGS__) \
bed1ffca022cc876 Frederic Weisbecker 2009-03-13 224 __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
bed1ffca022cc876 Frederic Weisbecker 2009-03-13 225
2cf0966683430b64 Al Viro 2013-01-21 226 #define __PROTECT(...) asmlinkage_protect(__VA_ARGS__)
1bd21c6c21e84899 Dominik Brodowski 2018-04-05 227
e145242ea0df6b7d Dominik Brodowski 2018-04-09 228 /*
e145242ea0df6b7d Dominik Brodowski 2018-04-09 229 * The asmlinkage stub is aliased to a function named __se_sys_*() which
e145242ea0df6b7d Dominik Brodowski 2018-04-09 230 * sign-extends 32-bit ints to longs whenever needed. The actual work is
e145242ea0df6b7d Dominik Brodowski 2018-04-09 231 * done within __do_sys_*().
e145242ea0df6b7d Dominik Brodowski 2018-04-09 232 */
1bd21c6c21e84899 Dominik Brodowski 2018-04-05 233 #ifndef __SYSCALL_DEFINEx
bed1ffca022cc876 Frederic Weisbecker 2009-03-13 234 #define __SYSCALL_DEFINEx(x, name, ...) \
bee20031772af3de Arnd Bergmann 2018-06-19 235 __diag_push(); \
bee20031772af3de Arnd Bergmann 2018-06-19 236 __diag_ignore(GCC, 8, "-Wattribute-alias", \
bee20031772af3de Arnd Bergmann 2018-06-19 237 "Type aliasing is used to sanitize syscall arguments");\
83460ec8dcac1414 Andi Kleen 2013-11-12 @238 asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
e145242ea0df6b7d Dominik Brodowski 2018-04-09 239 __attribute__((alias(__stringify(__se_sys##name)))); \
c9a211951c7c79cf Howard McLauchlan 2018-03-21 240 ALLOW_ERROR_INJECTION(sys##name, ERRNO); \
e145242ea0df6b7d Dominik Brodowski 2018-04-09 241 static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
e145242ea0df6b7d Dominik Brodowski 2018-04-09 242 asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
e145242ea0df6b7d Dominik Brodowski 2018-04-09 243 asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
1a94bc34768e463a Heiko Carstens 2009-01-14 244 { \
e145242ea0df6b7d Dominik Brodowski 2018-04-09 245 long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__));\
07fe6e00f6cca6fe Al Viro 2013-01-21 246 __MAP(x,__SC_TEST,__VA_ARGS__); \
2cf0966683430b64 Al Viro 2013-01-21 247 __PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__)); \
2cf0966683430b64 Al Viro 2013-01-21 248 return ret; \
1a94bc34768e463a Heiko Carstens 2009-01-14 249 } \
bee20031772af3de Arnd Bergmann 2018-06-19 250 __diag_pop(); \
e145242ea0df6b7d Dominik Brodowski 2018-04-09 251 static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
1bd21c6c21e84899 Dominik Brodowski 2018-04-05 252 #endif /* __SYSCALL_DEFINEx */
1a94bc34768e463a Heiko Carstens 2009-01-14 253
:::::: The code at line 238 was first introduced by commit
:::::: 83460ec8dcac14142e7860a01fa59c267ac4657c syscalls.h: use gcc alias instead of assembler aliases for syscalls
:::::: TO: Andi Kleen <ak@...ux.intel.com>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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