[thomas-weissschuh:b4/riscv-cfi-vdso-alternative 4/4] arch/riscv/kernel/alternative.c:210:27: error: use of undeclared identifier 'vdso_cfi_start'

[thomas-weissschuh:b4/riscv-cfi-vdso-alternative 4/4] arch/riscv/kernel/alternative.c:210:27: error: use of undeclared identifier 'vdso_cfi_start'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/thomas.weissschuh/linux.git b4/riscv-cfi-vdso-alternative
head:   fa83dca7c15f5aefda0432bda4aa4a802766ca70
commit: fa83dca7c15f5aefda0432bda4aa4a802766ca70 [4/4] riscv: alternative: Also patch the CFI vDSO
config: riscv-randconfig-001-20260430 (https://download.01.org/0day-ci/archive/20260430/202604301435.3ApdMPjV-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 5bac06718f502014fade905512f1d26d578a18f3)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260430/202604301435.3ApdMPjV-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/202604301435.3ApdMPjV-lkp@intel.com/

All errors (new ones prefixed by >>):

   arch/riscv/kernel/alternative.c:207:27: error: use of undeclared identifier 'vdso_start'; did you mean 'vfs_stat'?
     207 |                 apply_vdso_alternatives(vdso_start);
         |                                         ^~~~~~~~~~
         |                                         vfs_stat
   include/linux/fs.h:3206:19: note: 'vfs_stat' declared here
    3206 | static inline int vfs_stat(const char __user *filename, struct kstat *stat)
         |                   ^
>> arch/riscv/kernel/alternative.c:210:27: error: use of undeclared identifier 'vdso_cfi_start'
     210 |                 apply_vdso_alternatives(vdso_cfi_start);
         |                                         ^~~~~~~~~~~~~~
   2 errors generated.


vim +/vdso_cfi_start +210 arch/riscv/kernel/alternative.c

   196	
   197	void __init apply_boot_alternatives(void)
   198	{
   199		/* If called on non-boot cpu things could go wrong */
   200		WARN_ON(smp_processor_id() != 0);
   201	
   202		_apply_alternatives((struct alt_entry *)__alt_start,
   203				    (struct alt_entry *)__alt_end,
   204				    RISCV_ALTERNATIVES_BOOT);
   205	
   206		if (IS_ENABLED(CONFIG_MMU))
   207			apply_vdso_alternatives(vdso_start);
   208	
   209		if (IS_ENABLED(CONFIG_RISCV_USER_CFI))
 > 210			apply_vdso_alternatives(vdso_cfi_start);
   211	}
   212	

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