From: kernel test robot <lkp@intel.com>
To: Lukas Gerlach <lukas.gerlach@cispa.de>,
Paul Walmsley <pjw@kernel.org>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Alexandre Ghiti <alex@ghiti.fr>
Cc: oe-kbuild-all@lists.linux.dev, linux-riscv@lists.infradead.org,
linux-kernel@vger.kernel.org,
David Laight <david.laight.linux@gmail.com>,
Deepak Gupta <debug@rivosinc.com>,
Vivian Wang <wangruikang@iscas.ac.cn>,
Daniel Weber <daniel.weber@cispa.de>,
Michael Schwarz <michael.schwarz@cispa.de>,
Marton Bognar <marton.bognar@kuleuven.be>,
Jo Van Bulck <jo.vanbulck@kuleuven.be>,
Lukas Gerlach <lukas.gerlach@cispa.de>
Subject: Re: [PATCH v2] riscv: Limit uaccess speculation using guard page
Date: Wed, 4 Mar 2026 23:57:49 +0800 [thread overview]
Message-ID: <202603042332.krm6lzx8-lkp@intel.com> (raw)
In-Reply-To: <20260226-uaccess-guard-v2-v2-1-765a314839bc@cispa.de>
Hi Lukas,
kernel test robot noticed the following build warnings:
[auto build test WARNING on f4d0ec0aa20d49f09dc01d82894ce80d72de0560]
url: https://github.com/intel-lab-lkp/linux/commits/Lukas-Gerlach/riscv-Limit-uaccess-speculation-using-guard-page/20260227-000028
base: f4d0ec0aa20d49f09dc01d82894ce80d72de0560
patch link: https://lore.kernel.org/r/20260226-uaccess-guard-v2-v2-1-765a314839bc%40cispa.de
patch subject: [PATCH v2] riscv: Limit uaccess speculation using guard page
config: riscv-randconfig-001-20260304 (https://download.01.org/0day-ci/archive/20260304/202603042332.krm6lzx8-lkp@intel.com/config)
compiler: riscv32-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260304/202603042332.krm6lzx8-lkp@intel.com/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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202603042332.krm6lzx8-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from include/linux/uaccess.h:13,
from include/linux/sched/task.h:13,
from include/linux/sched/signal.h:9,
from include/linux/rcuwait.h:6,
from include/linux/mm.h:37,
from arch/riscv/kernel/asm-offsets.c:9:
arch/riscv/include/asm/uaccess.h: In function '__uaccess_mask_ptr':
>> arch/riscv/include/asm/uaccess.h:86:65: warning: right shift count >= width of type [-Wshift-count-overflow]
unsigned long mask = (unsigned long)((long)(TASK_SIZE - 1 - p) >> 63);
^~
--
In file included from include/linux/uaccess.h:13,
from include/linux/sched/task.h:13,
from include/linux/sched/signal.h:9,
from include/linux/rcuwait.h:6,
from include/linux/percpu-rwsem.h:7,
from include/linux/fs/super_types.h:13,
from include/linux/fs/super.h:5,
from include/linux/fs.h:5,
from include/linux/poll.h:10,
from fs/signalfd.c:22:
arch/riscv/include/asm/uaccess.h: In function '__uaccess_mask_ptr':
>> arch/riscv/include/asm/uaccess.h:86:65: warning: right shift count >= width of type [-Wshift-count-overflow]
unsigned long mask = (unsigned long)((long)(TASK_SIZE - 1 - p) >> 63);
^~
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:20,
from include/linux/device/driver.h:21,
from include/linux/device.h:32,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from include/linux/static_call.h:135,
from include/linux/tracepoint.h:22,
from include/trace/syscall.h:5,
from include/linux/syscalls.h:95,
from fs/signalfd.c:32:
fs/signalfd.c: At top level:
arch/riscv/include/asm/syscall_wrapper.h:35:14: warning: '__se_sys_signalfd4' 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:236:2: 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_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
^~~~~~~~~~~~~~~
fs/signalfd.c:299:1: note: in expansion of macro 'SYSCALL_DEFINE4'
SYSCALL_DEFINE4(signalfd4, int, ufd, sigset_t __user *, user_mask,
^~~~~~~~~~~~~~~
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:236:2: 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_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
^~~~~~~~~~~~~~~
fs/signalfd.c:299:1: note: in expansion of macro 'SYSCALL_DEFINE4'
SYSCALL_DEFINE4(signalfd4, int, ufd, sigset_t __user *, user_mask,
^~~~~~~~~~~~~~~
arch/riscv/include/asm/syscall_wrapper.h:35:14: warning: '__se_sys_signalfd' 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:236:2: 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_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
^~~~~~~~~~~~~~~
fs/signalfd.c:311:1: note: in expansion of macro 'SYSCALL_DEFINE3'
SYSCALL_DEFINE3(signalfd, int, ufd, sigset_t __user *, user_mask,
^~~~~~~~~~~~~~~
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:236:2: 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_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
^~~~~~~~~~~~~~~
fs/signalfd.c:311:1: note: in expansion of macro 'SYSCALL_DEFINE3'
SYSCALL_DEFINE3(signalfd, int, ufd, sigset_t __user *, user_mask,
^~~~~~~~~~~~~~~
--
In file included from include/linux/uaccess.h:13,
from include/linux/sched/task.h:13,
from include/linux/sched/signal.h:9,
from include/linux/rcuwait.h:6,
from include/linux/percpu-rwsem.h:7,
from include/linux/fs/super_types.h:13,
from include/linux/fs/super.h:5,
from include/linux/fs.h:5,
from include/linux/highmem.h:5,
from include/linux/bvec.h:10,
from include/linux/blk_types.h:10,
from include/linux/blkdev.h:9,
from fs/sync.c:6:
arch/riscv/include/asm/uaccess.h: In function '__uaccess_mask_ptr':
>> arch/riscv/include/asm/uaccess.h:86:65: warning: right shift count >= width of type [-Wshift-count-overflow]
unsigned long mask = (unsigned long)((long)(TASK_SIZE - 1 - p) >> 63);
^~
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:20,
from include/linux/device/driver.h:21,
from include/linux/device.h:32,
from include/linux/blk_types.h:11,
from include/linux/blkdev.h:9,
from fs/sync.c:6:
fs/sync.c: At top level:
arch/riscv/include/asm/syscall_wrapper.h:35:14: warning: '__se_sys_syncfs' 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)' [-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:236:2: note: in expansion of macro '__SYSCALL_DEFINEx'
__SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:225:36: note: in expansion of macro 'SYSCALL_DEFINEx'
#define SYSCALL_DEFINE1(name, ...) SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
^~~~~~~~~~~~~~~
fs/sync.c:148:1: note: in expansion of macro 'SYSCALL_DEFINE1'
SYSCALL_DEFINE1(syncfs, int, fd)
^~~~~~~~~~~~~~~
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:236:2: note: in expansion of macro '__SYSCALL_DEFINEx'
__SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:225:36: note: in expansion of macro 'SYSCALL_DEFINEx'
#define SYSCALL_DEFINE1(name, ...) SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
^~~~~~~~~~~~~~~
fs/sync.c:148:1: note: in expansion of macro 'SYSCALL_DEFINE1'
SYSCALL_DEFINE1(syncfs, int, fd)
^~~~~~~~~~~~~~~
arch/riscv/include/asm/syscall_wrapper.h:35:14: warning: '__se_sys_sync_file_range2' 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 long int, long 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:236:2: 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_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
^~~~~~~~~~~~~~~
fs/sync.c:377:1: note: in expansion of macro 'SYSCALL_DEFINE4'
SYSCALL_DEFINE4(sync_file_range2, int, fd, unsigned int, flags,
^~~~~~~~~~~~~~~
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:236:2: 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_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
^~~~~~~~~~~~~~~
fs/sync.c:377:1: note: in expansion of macro 'SYSCALL_DEFINE4'
SYSCALL_DEFINE4(sync_file_range2, int, fd, unsigned int, flags,
^~~~~~~~~~~~~~~
arch/riscv/include/asm/syscall_wrapper.h:35:14: warning: '__se_sys_sync_file_range' 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 long int, long 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:236:2: 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_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
^~~~~~~~~~~~~~~
fs/sync.c:360:1: note: in expansion of macro 'SYSCALL_DEFINE4'
SYSCALL_DEFINE4(sync_file_range, int, fd, loff_t, offset, loff_t, nbytes,
^~~~~~~~~~~~~~~
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:236:2: 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_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
^~~~~~~~~~~~~~~
fs/sync.c:360:1: note: in expansion of macro 'SYSCALL_DEFINE4'
--
In file included from include/linux/uaccess.h:13,
from include/linux/sched/task.h:13,
from include/linux/sched/signal.h:9,
from include/linux/rcuwait.h:6,
from include/linux/percpu-rwsem.h:7,
from include/linux/fs/super_types.h:13,
from include/linux/fs/super.h:5,
from include/linux/fs.h:5,
from include/linux/namei.h:5,
from fs/utimes.c:4:
arch/riscv/include/asm/uaccess.h: In function '__uaccess_mask_ptr':
>> arch/riscv/include/asm/uaccess.h:86:65: warning: right shift count >= width of type [-Wshift-count-overflow]
unsigned long mask = (unsigned long)((long)(TASK_SIZE - 1 - p) >> 63);
^~
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:20,
from include/linux/device/driver.h:21,
from include/linux/device.h:32,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from include/linux/static_call.h:135,
from include/linux/tracepoint.h:22,
from include/trace/syscall.h:5,
from include/linux/syscalls.h:95,
from fs/utimes.c:6:
fs/utimes.c: At top level:
arch/riscv/include/asm/syscall_wrapper.h:35:14: warning: '__se_sys_utimensat' 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:236:2: 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_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
^~~~~~~~~~~~~~~
fs/utimes.c:142:1: note: in expansion of macro 'SYSCALL_DEFINE4'
SYSCALL_DEFINE4(utimensat, int, dfd, const char __user *, filename,
^~~~~~~~~~~~~~~
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:236:2: 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_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
^~~~~~~~~~~~~~~
fs/utimes.c:142:1: note: in expansion of macro 'SYSCALL_DEFINE4'
SYSCALL_DEFINE4(utimensat, int, dfd, const char __user *, filename,
^~~~~~~~~~~~~~~
--
In file included from include/linux/uaccess.h:13,
from include/linux/sched/task.h:13,
from include/linux/sched/signal.h:9,
from include/linux/rcuwait.h:6,
from include/linux/percpu-rwsem.h:7,
from include/linux/fs/super_types.h:13,
from include/linux/fs/super.h:5,
from include/linux/fs.h:5,
from fs/namei.c:22:
arch/riscv/include/asm/uaccess.h: In function '__uaccess_mask_ptr':
>> arch/riscv/include/asm/uaccess.h:86:65: warning: right shift count >= width of type [-Wshift-count-overflow]
unsigned long mask = (unsigned long)((long)(TASK_SIZE - 1 - p) >> 63);
^~
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:20,
from include/linux/bpf.h:21,
from include/linux/security.h:35,
from fs/namei.c:29:
fs/namei.c: At top level:
arch/riscv/include/asm/syscall_wrapper.h:35:14: warning: '__se_sys_mknodat' 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:236:2: 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_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
^~~~~~~~~~~~~~~
fs/namei.c:5169:1: note: in expansion of macro 'SYSCALL_DEFINE4'
SYSCALL_DEFINE4(mknodat, int, dfd, const char __user *, filename, umode_t, mode,
^~~~~~~~~~~~~~~
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:236:2: 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_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
^~~~~~~~~~~~~~~
fs/namei.c:5169:1: note: in expansion of macro 'SYSCALL_DEFINE4'
SYSCALL_DEFINE4(mknodat, int, dfd, const char __user *, filename, umode_t, mode,
^~~~~~~~~~~~~~~
arch/riscv/include/asm/syscall_wrapper.h:35:14: warning: '__se_sys_rename' 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)' [-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:236:2: 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_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name, __VA_ARGS__)
^~~~~~~~~~~~~~~
fs/namei.c:6184:1: note: in expansion of macro 'SYSCALL_DEFINE2'
SYSCALL_DEFINE2(rename, const char __user *, oldname, const char __user *, newname)
^~~~~~~~~~~~~~~
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:236:2: 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_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name, __VA_ARGS__)
^~~~~~~~~~~~~~~
fs/namei.c:6184:1: note: in expansion of macro 'SYSCALL_DEFINE2'
SYSCALL_DEFINE2(rename, const char __user *, oldname, const char __user *, newname)
^~~~~~~~~~~~~~~
arch/riscv/include/asm/syscall_wrapper.h:35:14: warning: '__se_sys_renameat' 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:236:2: 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_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
^~~~~~~~~~~~~~~
fs/namei.c:6176:1: note: in expansion of macro 'SYSCALL_DEFINE4'
SYSCALL_DEFINE4(renameat, int, olddfd, const char __user *, oldname,
^~~~~~~~~~~~~~~
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:236:2: 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_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
^~~~~~~~~~~~~~~
fs/namei.c:6176:1: note: in expansion of macro 'SYSCALL_DEFINE4'
SYSCALL_DEFINE4(renameat, int, olddfd, const char __user *, oldname,
^~~~~~~~~~~~~~~
..
vim +86 arch/riscv/include/asm/uaccess.h
58
59 #define __enable_user_access() \
60 __asm__ __volatile__ ("csrs sstatus, %0" : : "r" (SR_SUM) : "memory")
61 #define __disable_user_access() \
62 __asm__ __volatile__ ("csrc sstatus, %0" : : "r" (SR_SUM) : "memory")
63
64 /*
65 * This is the smallest unsigned integer type that can fit a value
66 * (up to 'long long')
67 */
68 #define __inttype(x) __typeof__( \
69 __typefits(x, char, \
70 __typefits(x, short, \
71 __typefits(x, int, \
72 __typefits(x, long, 0ULL)))))
73
74 #define __typefits(x, type, not) \
75 __builtin_choose_expr(sizeof(x) <= sizeof(type), (unsigned type)0, not)
76
77 /*
78 * Sanitize a uaccess pointer such that it cannot reach any kernel address.
79 * Branchlessly clamp any address >= TASK_SIZE to the unmapped guard page
80 * at TASK_SIZE-1, which will always fault on access.
81 */
82 #define uaccess_mask_ptr(ptr) ((__typeof__(ptr))__uaccess_mask_ptr(ptr))
83 static inline void __user *__uaccess_mask_ptr(const void __user *ptr)
84 {
85 unsigned long p = (unsigned long)ptr;
> 86 unsigned long mask = (unsigned long)((long)(TASK_SIZE - 1 - p) >> 63);
87
88 return (void __user *)((p & ~mask) | ((TASK_SIZE - 1) & mask));
89 }
90
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
prev parent reply other threads:[~2026-03-04 15:58 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-26 15:03 Lukas Gerlach
2026-03-04 15:57 ` kernel test robot [this message]
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