[openeuler:openEuler-1.0-LTS 1353/1353] fs/debugfs/file.o: warning: objtool: full_proxy_open()+0x55a: unreachable instruction

[kernel test robot <lkp@intel.com>]

Hi Drew,

FYI, the error/warning still remains.

tree:   https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS
head:   7dd09dff93e7ad921baf5cec4b58301d9aebb79a
commit: d4bdc26bcd632cee393b5171345d5fa6293fe42b [1353/1353] include/asm-generic/bug.h: fix "cut here" for WARN_ON for __WARN_TAINT architectures
config: x86_64-randconfig-122-20241226 (https://download.01.org/0day-ci/archive/20250901/202509011343.tLFbbMN4-lkp@intel.com/config)
compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250901/202509011343.tLFbbMN4-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/202509011343.tLFbbMN4-lkp@intel.com/

All warnings (new ones prefixed by >>):

   fs/debugfs/file.c: note: in included file (through include/linux/kernel.h, include/linux/list.h, include/linux/module.h):
   /opt/cross/clang-cd708029e0/lib/clang/19/include/stdarg.h:22:44: sparse: sparse: Expected ) in function call
   /opt/cross/clang-cd708029e0/lib/clang/19/include/stdarg.h:22:44: sparse: sparse: got <
   /opt/cross/clang-cd708029e0/lib/clang/19/include/stdarg.h:22:43: sparse: sparse: not a function <noident>
   /opt/cross/clang-cd708029e0/lib/clang/19/include/stdarg.h:22:22: sparse: sparse: bad constant expression type
   fs/debugfs/file.c: note: in included file (through include/linux/printk.h, include/linux/kernel.h, include/linux/list.h, ...):
   /opt/cross/clang-cd708029e0/lib/clang/19/include/stdarg.h:22:44: sparse: sparse: Expected ) in function call
   /opt/cross/clang-cd708029e0/lib/clang/19/include/stdarg.h:22:44: sparse: sparse: got <
   /opt/cross/clang-cd708029e0/lib/clang/19/include/stdarg.h:22:43: sparse: sparse: not a function <noident>
   /opt/cross/clang-cd708029e0/lib/clang/19/include/stdarg.h:22:22: sparse: sparse: bad constant expression type
   fs/debugfs/file.c: note: in included file (through include/linux/string.h, include/linux/bitmap.h, include/linux/cpumask.h, ...):
   /opt/cross/clang-cd708029e0/lib/clang/19/include/stdarg.h:22:44: sparse: sparse: Expected ) in function call
   /opt/cross/clang-cd708029e0/lib/clang/19/include/stdarg.h:22:44: sparse: sparse: got <
   /opt/cross/clang-cd708029e0/lib/clang/19/include/stdarg.h:22:43: sparse: sparse: not a function <noident>
   /opt/cross/clang-cd708029e0/lib/clang/19/include/stdarg.h:22:22: sparse: sparse: bad constant expression type
>> fs/debugfs/file.o: warning: objtool: full_proxy_open()+0x55a: unreachable instruction

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