[palmer:riscv-extable 12/13] arch/riscv/include/asm/uaccess.h:113:9: error: expected ';' before 'if'
From: kernel test robot
Date: Wed Jan 05 2022 - 22:44:10 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/palmer/linux.git riscv-extable
head: e47260bcbc2ef5ec1010dab9b28551937b002313
commit: 414aca87942d14a50dfad8e17f412736141101ec [12/13] riscv: extable: add a dedicated uaccess handler
config: riscv-rv32_defconfig (https://download.01.org/0day-ci/archive/20220106/202201061113.u3t3S26G-lkp@xxxxxxxxx/config)
compiler: riscv32-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/palmer/linux.git/commit/?id=414aca87942d14a50dfad8e17f412736141101ec
git remote add palmer https://git.kernel.org/pub/scm/linux/kernel/git/palmer/linux.git
git fetch --no-tags palmer riscv-extable
git checkout 414aca87942d14a50dfad8e17f412736141101ec
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=riscv SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>
All errors (new ones prefixed by >>):
In file included from include/linux/uaccess.h:11,
from include/linux/sched/task.h:11,
from include/linux/sched/signal.h:9,
from include/linux/rcuwait.h:6,
from include/linux/percpu-rwsem.h:7,
from include/linux/fs.h:33,
from include/linux/tty.h:5,
from init/do_mounts.c:6:
include/asm-generic/termios.h: In function 'user_termio_to_kernel_termios':
>> arch/riscv/include/asm/uaccess.h:113:9: error: expected ';' before 'if'
113 | if (err) \
| ^~
arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8'
133 | __get_user_8((x), __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck'
168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user'
196 | __get_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:25:13: note: in expansion of macro 'get_user'
25 | if (get_user(tmp, &termio->c_iflag) < 0)
| ^~~~~~~~
>> arch/riscv/include/asm/uaccess.h:113:9: error: expected ';' before 'if'
113 | if (err) \
| ^~
arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8'
133 | __get_user_8((x), __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck'
168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user'
196 | __get_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:29:13: note: in expansion of macro 'get_user'
29 | if (get_user(tmp, &termio->c_oflag) < 0)
| ^~~~~~~~
>> arch/riscv/include/asm/uaccess.h:113:9: error: expected ';' before 'if'
113 | if (err) \
| ^~
arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8'
133 | __get_user_8((x), __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck'
168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user'
196 | __get_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:33:13: note: in expansion of macro 'get_user'
33 | if (get_user(tmp, &termio->c_cflag) < 0)
| ^~~~~~~~
>> arch/riscv/include/asm/uaccess.h:113:9: error: expected ';' before 'if'
113 | if (err) \
| ^~
arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8'
133 | __get_user_8((x), __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck'
168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user'
196 | __get_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:37:13: note: in expansion of macro 'get_user'
37 | if (get_user(tmp, &termio->c_lflag) < 0)
| ^~~~~~~~
>> arch/riscv/include/asm/uaccess.h:113:9: error: expected ';' before 'if'
113 | if (err) \
| ^~
arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8'
133 | __get_user_8((x), __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck'
168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user'
196 | __get_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:41:13: note: in expansion of macro 'get_user'
41 | if (get_user(termios->c_line, &termio->c_line) < 0)
| ^~~~~~~~
include/asm-generic/termios.h: In function 'kernel_termios_to_user_termio':
arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable]
220 | uintptr_t __tmp; \
| ^~~~~
arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8'
249 | __put_user_8((x), __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck'
286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user'
313 | __put_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:59:13: note: in expansion of macro 'put_user'
59 | if (put_user(termios->c_iflag, &termio->c_iflag) < 0 ||
| ^~~~~~~~
arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable]
220 | uintptr_t __tmp; \
| ^~~~~
arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8'
249 | __put_user_8((x), __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck'
286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user'
313 | __put_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:60:13: note: in expansion of macro 'put_user'
60 | put_user(termios->c_oflag, &termio->c_oflag) < 0 ||
| ^~~~~~~~
arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable]
220 | uintptr_t __tmp; \
| ^~~~~
arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8'
249 | __put_user_8((x), __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck'
286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user'
313 | __put_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:61:13: note: in expansion of macro 'put_user'
61 | put_user(termios->c_cflag, &termio->c_cflag) < 0 ||
| ^~~~~~~~
arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable]
220 | uintptr_t __tmp; \
| ^~~~~
arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8'
249 | __put_user_8((x), __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck'
286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user'
313 | __put_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:62:13: note: in expansion of macro 'put_user'
62 | put_user(termios->c_lflag, &termio->c_lflag) < 0 ||
| ^~~~~~~~
arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable]
220 | uintptr_t __tmp; \
| ^~~~~
arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8'
249 | __put_user_8((x), __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck'
286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user'
313 | __put_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:63:13: note: in expansion of macro 'put_user'
63 | put_user(termios->c_line, &termio->c_line) < 0 ||
| ^~~~~~~~
--
In file included from include/linux/uaccess.h:11,
from arch/riscv/kernel/signal.c:10:
arch/riscv/kernel/signal.c: In function 'restore_fp_state':
>> arch/riscv/include/asm/uaccess.h:113:9: error: expected ';' before 'if'
113 | if (err) \
| ^~
arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8'
133 | __get_user_8((x), __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck'
168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/kernel/signal.c:50:23: note: in expansion of macro '__get_user'
50 | err = __get_user(value, &sc_fpregs->q.reserved[i]);
| ^~~~~~~~~~
arch/riscv/kernel/signal.c: In function 'save_fp_state':
arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable]
220 | uintptr_t __tmp; \
| ^~~~~
arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8'
249 | __put_user_8((x), __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck'
286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/kernel/signal.c:74:23: note: in expansion of macro '__put_user'
74 | err = __put_user(0, &sc_fpregs->q.reserved[i]);
| ^~~~~~~~~~
arch/riscv/kernel/signal.c: In function 'setup_rt_frame':
arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable]
220 | uintptr_t __tmp; \
| ^~~~~
arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8'
249 | __put_user_8((x), __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck'
286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/kernel/signal.c:187:16: note: in expansion of macro '__put_user'
187 | err |= __put_user(0, &frame->uc.uc_flags);
| ^~~~~~~~~~
arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable]
220 | uintptr_t __tmp; \
| ^~~~~
arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8'
249 | __put_user_8((x), __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck'
286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/kernel/signal.c:188:16: note: in expansion of macro '__put_user'
188 | err |= __put_user(NULL, &frame->uc.uc_link);
| ^~~~~~~~~~
arch/riscv/kernel/signal.c: At top level:
arch/riscv/kernel/signal.c:309:27: warning: no previous prototype for 'do_notify_resume' [-Wmissing-prototypes]
309 | asmlinkage __visible void do_notify_resume(struct pt_regs *regs,
| ^~~~~~~~~~~~~~~~
--
In file included from include/linux/uaccess.h:11,
from include/linux/sched/task.h:11,
from kernel/fork.c:23:
include/asm-generic/termios.h: In function 'user_termio_to_kernel_termios':
>> arch/riscv/include/asm/uaccess.h:113:9: error: expected ';' before 'if'
113 | if (err) \
| ^~
arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8'
133 | __get_user_8((x), __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck'
168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user'
196 | __get_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:25:13: note: in expansion of macro 'get_user'
25 | if (get_user(tmp, &termio->c_iflag) < 0)
| ^~~~~~~~
>> arch/riscv/include/asm/uaccess.h:113:9: error: expected ';' before 'if'
113 | if (err) \
| ^~
arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8'
133 | __get_user_8((x), __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck'
168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user'
196 | __get_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:29:13: note: in expansion of macro 'get_user'
29 | if (get_user(tmp, &termio->c_oflag) < 0)
| ^~~~~~~~
>> arch/riscv/include/asm/uaccess.h:113:9: error: expected ';' before 'if'
113 | if (err) \
| ^~
arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8'
133 | __get_user_8((x), __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck'
168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user'
196 | __get_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:33:13: note: in expansion of macro 'get_user'
33 | if (get_user(tmp, &termio->c_cflag) < 0)
| ^~~~~~~~
>> arch/riscv/include/asm/uaccess.h:113:9: error: expected ';' before 'if'
113 | if (err) \
| ^~
arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8'
133 | __get_user_8((x), __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck'
168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user'
196 | __get_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:37:13: note: in expansion of macro 'get_user'
37 | if (get_user(tmp, &termio->c_lflag) < 0)
| ^~~~~~~~
>> arch/riscv/include/asm/uaccess.h:113:9: error: expected ';' before 'if'
113 | if (err) \
| ^~
arch/riscv/include/asm/uaccess.h:133:17: note: in expansion of macro '__get_user_8'
133 | __get_user_8((x), __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:168:9: note: in expansion of macro '__get_user_nocheck'
168 | __get_user_nocheck(x, __gu_ptr, __gu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:196:17: note: in expansion of macro '__get_user'
196 | __get_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:41:13: note: in expansion of macro 'get_user'
41 | if (get_user(termios->c_line, &termio->c_line) < 0)
| ^~~~~~~~
include/asm-generic/termios.h: In function 'kernel_termios_to_user_termio':
arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable]
220 | uintptr_t __tmp; \
| ^~~~~
arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8'
249 | __put_user_8((x), __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck'
286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user'
313 | __put_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:59:13: note: in expansion of macro 'put_user'
59 | if (put_user(termios->c_iflag, &termio->c_iflag) < 0 ||
| ^~~~~~~~
arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable]
220 | uintptr_t __tmp; \
| ^~~~~
arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8'
249 | __put_user_8((x), __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck'
286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user'
313 | __put_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:60:13: note: in expansion of macro 'put_user'
60 | put_user(termios->c_oflag, &termio->c_oflag) < 0 ||
| ^~~~~~~~
arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable]
220 | uintptr_t __tmp; \
| ^~~~~
arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8'
249 | __put_user_8((x), __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck'
286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user'
313 | __put_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:61:13: note: in expansion of macro 'put_user'
61 | put_user(termios->c_cflag, &termio->c_cflag) < 0 ||
| ^~~~~~~~
arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable]
220 | uintptr_t __tmp; \
| ^~~~~
arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8'
249 | __put_user_8((x), __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck'
286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user'
313 | __put_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:62:13: note: in expansion of macro 'put_user'
62 | put_user(termios->c_lflag, &termio->c_lflag) < 0 ||
| ^~~~~~~~
arch/riscv/include/asm/uaccess.h:220:19: warning: unused variable '__tmp' [-Wunused-variable]
220 | uintptr_t __tmp; \
| ^~~~~
arch/riscv/include/asm/uaccess.h:249:17: note: in expansion of macro '__put_user_8'
249 | __put_user_8((x), __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:286:9: note: in expansion of macro '__put_user_nocheck'
286 | __put_user_nocheck(__val, __gu_ptr, __pu_err); \
| ^~~~~~~~~~~~~~~~~~
arch/riscv/include/asm/uaccess.h:313:17: note: in expansion of macro '__put_user'
313 | __put_user((x), __p) : \
| ^~~~~~~~~~
include/asm-generic/termios.h:63:13: note: in expansion of macro 'put_user'
63 | put_user(termios->c_line, &termio->c_line) < 0 ||
| ^~~~~~~~
kernel/fork.c: At top level:
kernel/fork.c:161:13: warning: no previous prototype for 'arch_release_task_struct' [-Wmissing-prototypes]
161 | void __weak arch_release_task_struct(struct task_struct *tsk)
| ^~~~~~~~~~~~~~~~~~~~~~~~
kernel/fork.c:763:20: warning: no previous prototype for 'arch_task_cache_init' [-Wmissing-prototypes]
763 | void __init __weak arch_task_cache_init(void) { }
| ^~~~~~~~~~~~~~~~~~~~
In file included from include/linux/uaccess.h:11,
from include/linux/sched/task.h:11,
from kernel/fork.c:23:
..
vim +113 arch/riscv/include/asm/uaccess.h
94
95 #ifdef CONFIG_64BIT
96 #define __get_user_8(x, ptr, err) \
97 __get_user_asm("ld", x, ptr, err)
98 #else /* !CONFIG_64BIT */
99 #define __get_user_8(x, ptr, err) \
100 do { \
101 u32 __user *__ptr = (u32 __user *)(ptr); \
102 u32 __lo, __hi; \
103 __asm__ __volatile__ ( \
104 "1:\n" \
105 " lw %1, %3\n" \
106 "2:\n" \
107 " lw %2, %4\n" \
108 "3:\n" \
109 _ASM_EXTABLE_UACCESS_ERR_ZERO(1b, 3b, %0, %1) \
110 _ASM_EXTABLE_UACCESS_ERR_ZERO(2b, 3b, %0, %1) \
111 : "+r" (err), "=&r" (__lo), "=r" (__hi) \
112 : "m" (__ptr[__LSW]), "m" (__ptr[__MSW])) \
> 113 if (err) \
114 __hi = 0; \
115 (x) = (__typeof__(x))((__typeof__((x)-(x)))( \
116 (((u64)__hi << 32) | __lo))); \
117 } while (0)
118 #endif /* CONFIG_64BIT */
119
120 #define __get_user_nocheck(x, __gu_ptr, __gu_err) \
121 do { \
122 switch (sizeof(*__gu_ptr)) { \
123 case 1: \
124 __get_user_asm("lb", (x), __gu_ptr, __gu_err); \
125 break; \
126 case 2: \
127 __get_user_asm("lh", (x), __gu_ptr, __gu_err); \
128 break; \
129 case 4: \
130 __get_user_asm("lw", (x), __gu_ptr, __gu_err); \
131 break; \
132 case 8: \
133 __get_user_8((x), __gu_ptr, __gu_err); \
134 break; \
135 default: \
136 BUILD_BUG(); \
137 } \
138 } while (0)
139
140 /**
141 * __get_user: - Get a simple variable from user space, with less checking.
142 * @x: Variable to store result.
143 * @ptr: Source address, in user space.
144 *
145 * Context: User context only. This function may sleep.
146 *
147 * This macro copies a single simple variable from user space to kernel
148 * space. It supports simple types like char and int, but not larger
149 * data types like structures or arrays.
150 *
151 * @ptr must have pointer-to-simple-variable type, and the result of
152 * dereferencing @ptr must be assignable to @x without a cast.
153 *
154 * Caller must check the pointer with access_ok() before calling this
155 * function.
156 *
157 * Returns zero on success, or -EFAULT on error.
158 * On error, the variable @x is set to zero.
159 */
160 #define __get_user(x, ptr) \
161 ({ \
162 const __typeof__(*(ptr)) __user *__gu_ptr = (ptr); \
163 long __gu_err = 0; \
164 \
165 __chk_user_ptr(__gu_ptr); \
166 \
167 __enable_user_access(); \
168 __get_user_nocheck(x, __gu_ptr, __gu_err); \
169 __disable_user_access(); \
170 \
171 __gu_err; \
172 })
173
174 /**
175 * get_user: - Get a simple variable from user space.
176 * @x: Variable to store result.
177 * @ptr: Source address, in user space.
178 *
179 * Context: User context only. This function may sleep.
180 *
181 * This macro copies a single simple variable from user space to kernel
182 * space. It supports simple types like char and int, but not larger
183 * data types like structures or arrays.
184 *
185 * @ptr must have pointer-to-simple-variable type, and the result of
186 * dereferencing @ptr must be assignable to @x without a cast.
187 *
188 * Returns zero on success, or -EFAULT on error.
189 * On error, the variable @x is set to zero.
190 */
191 #define get_user(x, ptr) \
192 ({ \
193 const __typeof__(*(ptr)) __user *__p = (ptr); \
194 might_fault(); \
195 access_ok(__p, sizeof(*__p)) ? \
196 __get_user((x), __p) : \
197 ((x) = 0, -EFAULT); \
198 })
199
200 #define __put_user_asm(insn, x, ptr, err) \
201 do { \
202 __typeof__(*(ptr)) __x = x; \
203 __asm__ __volatile__ ( \
204 "1:\n" \
205 " " insn " %z2, %1\n" \
206 "2:\n" \
207 _ASM_EXTABLE_UACCESS_ERR(1b, 2b, %0) \
208 : "+r" (err), "=m" (*(ptr)) \
209 : "rJ" (__x)); \
210 } while (0)
211
212 #ifdef CONFIG_64BIT
213 #define __put_user_8(x, ptr, err) \
214 __put_user_asm("sd", x, ptr, err)
215 #else /* !CONFIG_64BIT */
216 #define __put_user_8(x, ptr, err) \
217 do { \
218 u32 __user *__ptr = (u32 __user *)(ptr); \
219 u64 __x = (__typeof__((x)-(x)))(x); \
220 uintptr_t __tmp; \
221 __asm__ __volatile__ ( \
222 "1:\n" \
223 " sw %z3, %1\n" \
224 "2:\n" \
225 " sw %z4, %2\n" \
226 "3:\n" \
227 _ASM_EXTABLE_UACCESS_ERR(1b, 3b, %0) \
228 _ASM_EXTABLE_UACCESS_ERR(2b, 3b, %0) \
229 : "+r" (err), \
230 "=m" (__ptr[__LSW]), \
231 "=m" (__ptr[__MSW]) \
232 : "rJ" (__x), "rJ" (__x >> 32)); \
233 } while (0)
234 #endif /* CONFIG_64BIT */
235
236 #define __put_user_nocheck(x, __gu_ptr, __pu_err) \
237 do { \
238 switch (sizeof(*__gu_ptr)) { \
239 case 1: \
240 __put_user_asm("sb", (x), __gu_ptr, __pu_err); \
241 break; \
242 case 2: \
243 __put_user_asm("sh", (x), __gu_ptr, __pu_err); \
244 break; \
245 case 4: \
246 __put_user_asm("sw", (x), __gu_ptr, __pu_err); \
247 break; \
248 case 8: \
249 __put_user_8((x), __gu_ptr, __pu_err); \
250 break; \
251 default: \
252 BUILD_BUG(); \
253 } \
254 } while (0)
255
256 /**
257 * __put_user: - Write a simple value into user space, with less checking.
258 * @x: Value to copy to user space.
259 * @ptr: Destination address, in user space.
260 *
261 * Context: User context only. This function may sleep.
262 *
263 * This macro copies a single simple value from kernel space to user
264 * space. It supports simple types like char and int, but not larger
265 * data types like structures or arrays.
266 *
267 * @ptr must have pointer-to-simple-variable type, and @x must be assignable
268 * to the result of dereferencing @ptr. The value of @x is copied to avoid
269 * re-ordering where @x is evaluated inside the block that enables user-space
270 * access (thus bypassing user space protection if @x is a function).
271 *
272 * Caller must check the pointer with access_ok() before calling this
273 * function.
274 *
275 * Returns zero on success, or -EFAULT on error.
276 */
277 #define __put_user(x, ptr) \
278 ({ \
279 __typeof__(*(ptr)) __user *__gu_ptr = (ptr); \
280 __typeof__(*__gu_ptr) __val = (x); \
281 long __pu_err = 0; \
282 \
283 __chk_user_ptr(__gu_ptr); \
284 \
285 __enable_user_access(); \
> 286 __put_user_nocheck(__val, __gu_ptr, __pu_err); \
287 __disable_user_access(); \
288 \
289 __pu_err; \
290 })
291
---
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