kernel/futex/core.o: warning: objtool: futex_init+0x128: unreachable instruction

kernel/futex/core.o: warning: objtool: futex_init+0x128: unreachable instruction

[kernel test robot]

:::::: 
:::::: Manual check reason: "loongarch: unreachable instruction"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Peter Zijlstra <peterz@infradead.org>
CC: K Prateek Nayak <kprateek.nayak@amd.com>
CC: Charlie Jenkins <thecharlesjenkins@gmail.com>

Hi Peter,

FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   587858367581b9c55c3690f4e63382ad622719d4
commit: b78b0b65825275f58336a43611a700de174be8c3 futex: Use runtime constants for __futex_hash() hot path
date:   7 weeks ago
:::::: branch date: 9 hours ago
:::::: commit date: 7 weeks ago
config: loongarch-randconfig-r063-20260914 (https://download.01.org/0day-ci/archive/20260915/202609150426.M4he5Ppc-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260915/202609150426.M4he5Ppc-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
| Fixes: b78b0b658252 ("futex: Use runtime constants for __futex_hash() hot path")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202609150426.M4he5Ppc-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> kernel/futex/core.o: warning: objtool: futex_init+0x128: unreachable instruction

--
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https://github.com/intel/lkp-tests/wiki