* [linux-next:master 8977/10491] include/linux/fs.h:3921:15: error: label followed by a declaration is a C23 extension
@ 2025-05-12 15:54 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2025-05-12 15:54 UTC (permalink / raw)
To: Jisheng Zhang
Cc: llvm, oe-kbuild-all, Palmer Dabbelt, Cyril Bur, Alexandre Ghiti
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: edef457004774e598fc4c1b7d1d4f0bcd9d0bb30
commit: f6bff7827a48e59cff1ef98aae72452d65174e0c [8977/10491] riscv: uaccess: use 'asm_goto_output' for get_user()
config: riscv-randconfig-002-20250512 (https://download.01.org/0day-ci/archive/20250512/202505122357.aPWWHCbX-lkp@intel.com/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project f819f46284f2a79790038e1f6649172789734ae8)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250512/202505122357.aPWWHCbX-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/202505122357.aPWWHCbX-lkp@intel.com/
All error/warnings (new ones prefixed by >>):
In file included from block/bsg.c:5:
In file included from include/linux/module.h:19:
In file included from include/linux/elf.h:6:
In file included from arch/riscv/include/asm/elf.h:12:
In file included from include/linux/compat.h:17:
include/linux/fs.h:3921:15: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
3921 | if (unlikely(get_user(c, path)))
| ^
arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user'
263 | __get_user((x), __p) : \
| ^
arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user'
233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \
| ^
arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error'
196 | __get_user_nocheck(x, ptr, __gu_failed); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
>> block/bsg.c:96:6: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
96 | if (get_user(max_queue, uarg))
| ^
arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user'
263 | __get_user((x), __p) : \
| ^
arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user'
233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \
| ^
arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error'
196 | __get_user_nocheck(x, ptr, __gu_failed); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
block/bsg.c:131:7: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
131 | if (get_user(val, intp))
| ^
arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user'
263 | __get_user((x), __p) : \
| ^
arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user'
233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \
| ^
arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error'
196 | __get_user_nocheck(x, ptr, __gu_failed); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
block/bsg.c:141:7: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
141 | if (get_user(val, intp))
| ^
arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user'
263 | __get_user((x), __p) : \
| ^
arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user'
233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \
| ^
arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error'
196 | __get_user_nocheck(x, ptr, __gu_failed); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
4 warnings generated.
--
In file included from block/ioctl.c:3:
In file included from include/linux/compat.h:17:
include/linux/fs.h:3921:15: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
3921 | if (unlikely(get_user(c, path)))
| ^
arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user'
263 | __get_user((x), __p) : \
| ^
arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user'
233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \
| ^
arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error'
196 | __get_user_nocheck(x, ptr, __gu_failed); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
>> block/ioctl.c:72:6: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
72 | if (get_user(op, &arg->op) || get_user(udata, &arg->data))
| ^
arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user'
263 | __get_user((x), __p) : \
| ^
arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user'
233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \
| ^
arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error'
196 | __get_user_nocheck(x, ptr, __gu_failed); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
block/ioctl.c:72:32: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
72 | if (get_user(op, &arg->op) || get_user(udata, &arg->data))
| ^
arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user'
263 | __get_user((x), __p) : \
| ^
arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user'
233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \
| ^
arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error'
196 | __get_user_nocheck(x, ptr, __gu_failed); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
block/ioctl.c:445:6: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
445 | if (get_user(n, (int __user *)arg))
| ^
arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user'
263 | __get_user((x), __p) : \
| ^
arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user'
233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \
| ^
arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error'
196 | __get_user_nocheck(x, ptr, __gu_failed); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
block/ioctl.c:538:6: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
538 | if (get_user(n, argp))
| ^
arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user'
263 | __get_user((x), __p) : \
| ^
arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user'
233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \
| ^
arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error'
196 | __get_user_nocheck(x, ptr, __gu_failed); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
5 warnings generated.
--
In file included from kernel/rseq.c:13:
In file included from include/linux/syscalls.h:83:
In file included from include/uapi/linux/aio_abi.h:31:
include/linux/fs.h:3921:15: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
3921 | if (unlikely(get_user(c, path)))
| ^
arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user'
263 | __get_user((x), __p) : \
| ^
arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user'
233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \
| ^
arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error'
196 | __get_user_nocheck(x, ptr, __gu_failed); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
>> kernel/rseq.c:299:8: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
299 | ret = get_user(sig, usig);
| ^
arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user'
263 | __get_user((x), __p) : \
| ^
arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user'
233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \
| ^
arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error'
196 | __get_user_nocheck(x, ptr, __gu_failed); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
kernel/rseq.c:336:8: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
336 | ret = get_user(flags, &t->rseq->flags);
| ^
arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user'
263 | __get_user((x), __p) : \
| ^
arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user'
233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \
| ^
arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error'
196 | __get_user_nocheck(x, ptr, __gu_failed); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
3 warnings generated.
--
In file included from io_uring/futex.c:4:
include/linux/fs.h:3921:15: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
3921 | if (unlikely(get_user(c, path)))
| ^
arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user'
263 | __get_user((x), __p) : \
| ^
arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user'
233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \
| ^
arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error'
196 | __get_user_nocheck(x, ptr, __gu_failed); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
In file included from io_uring/futex.c:10:
>> io_uring/../kernel/futex/futex.h:267:2: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
267 | unsafe_get_user(val, from, Efault);
| ^
arch/riscv/include/asm/uaccess.h:449:2: note: expanded from macro 'unsafe_get_user'
449 | __get_user_nocheck(__gu_val, (ptr), label); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
2 warnings generated.
--
In file included from io_uring/net.c:6:
In file included from include/linux/net.h:23:
include/linux/fs.h:3921:15: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
3921 | if (unlikely(get_user(c, path)))
| ^
arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user'
263 | __get_user((x), __p) : \
| ^
arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user'
233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \
| ^
arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error'
196 | __get_user_nocheck(x, ptr, __gu_failed); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
>> io_uring/net.c:261:2: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
261 | unsafe_get_user(msg->msg_name, &umsg->msg_name, ua_end);
| ^
arch/riscv/include/asm/uaccess.h:449:2: note: expanded from macro 'unsafe_get_user'
449 | __get_user_nocheck(__gu_val, (ptr), label); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
io_uring/net.c:262:2: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
262 | unsafe_get_user(msg->msg_namelen, &umsg->msg_namelen, ua_end);
| ^
arch/riscv/include/asm/uaccess.h:449:2: note: expanded from macro 'unsafe_get_user'
449 | __get_user_nocheck(__gu_val, (ptr), label); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
io_uring/net.c:263:2: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
263 | unsafe_get_user(msg->msg_iov, &umsg->msg_iov, ua_end);
| ^
arch/riscv/include/asm/uaccess.h:449:2: note: expanded from macro 'unsafe_get_user'
449 | __get_user_nocheck(__gu_val, (ptr), label); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
io_uring/net.c:264:2: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
264 | unsafe_get_user(msg->msg_iovlen, &umsg->msg_iovlen, ua_end);
| ^
arch/riscv/include/asm/uaccess.h:449:2: note: expanded from macro 'unsafe_get_user'
449 | __get_user_nocheck(__gu_val, (ptr), label); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
io_uring/net.c:265:2: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
265 | unsafe_get_user(msg->msg_control, &umsg->msg_control, ua_end);
| ^
arch/riscv/include/asm/uaccess.h:449:2: note: expanded from macro 'unsafe_get_user'
449 | __get_user_nocheck(__gu_val, (ptr), label); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
io_uring/net.c:266:2: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
266 | unsafe_get_user(msg->msg_controllen, &umsg->msg_controllen, ua_end);
| ^
arch/riscv/include/asm/uaccess.h:449:2: note: expanded from macro 'unsafe_get_user'
449 | __get_user_nocheck(__gu_val, (ptr), label); \
| ^
arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck'
185 | __get_user_8((x), __gu_ptr, label); \
| ^
arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8'
130 | u32 __user *__ptr = (u32 __user *)(ptr); \
| ^
7 warnings generated.
..
vim +3921 include/linux/fs.h
90f8572b0f021f Eric W. Biederman 2015-06-29 3903
45cd0faae3715e Amir Goldstein 2018-08-27 3904 /* mm/fadvise.c */
45cd0faae3715e Amir Goldstein 2018-08-27 3905 extern int vfs_fadvise(struct file *file, loff_t offset, loff_t len,
45cd0faae3715e Amir Goldstein 2018-08-27 3906 int advice);
cf1ea0592dbf10 Jan Kara 2019-08-29 3907 extern int generic_fadvise(struct file *file, loff_t offset, loff_t len,
cf1ea0592dbf10 Jan Kara 2019-08-29 3908 int advice);
45cd0faae3715e Amir Goldstein 2018-08-27 3909
1bc6d4452d5c91 Christian Brauner 2024-04-30 3910 static inline bool vfs_empty_path(int dfd, const char __user *path)
1bc6d4452d5c91 Christian Brauner 2024-04-30 3911 {
1bc6d4452d5c91 Christian Brauner 2024-04-30 3912 char c;
1bc6d4452d5c91 Christian Brauner 2024-04-30 3913
1bc6d4452d5c91 Christian Brauner 2024-04-30 3914 if (dfd < 0)
1bc6d4452d5c91 Christian Brauner 2024-04-30 3915 return false;
1bc6d4452d5c91 Christian Brauner 2024-04-30 3916
1bc6d4452d5c91 Christian Brauner 2024-04-30 3917 /* We now allow NULL to be used for empty path. */
1bc6d4452d5c91 Christian Brauner 2024-04-30 3918 if (!path)
1bc6d4452d5c91 Christian Brauner 2024-04-30 3919 return true;
1bc6d4452d5c91 Christian Brauner 2024-04-30 3920
1bc6d4452d5c91 Christian Brauner 2024-04-30 @3921 if (unlikely(get_user(c, path)))
1bc6d4452d5c91 Christian Brauner 2024-04-30 3922 return false;
1bc6d4452d5c91 Christian Brauner 2024-04-30 3923
1bc6d4452d5c91 Christian Brauner 2024-04-30 3924 return !c;
1bc6d4452d5c91 Christian Brauner 2024-04-30 3925 }
1bc6d4452d5c91 Christian Brauner 2024-04-30 3926
:::::: The code at line 3921 was first introduced by commit
:::::: 1bc6d4452d5c91beb09e37a98a590808e1997b79 fs: new helper vfs_empty_path()
:::::: TO: Christian Brauner <brauner@kernel.org>
:::::: CC: Christian Brauner <brauner@kernel.org>
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0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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2025-05-12 15:54 [linux-next:master 8977/10491] include/linux/fs.h:3921:15: error: label followed by a declaration is a C23 extension kernel test robot
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