linux-kernel - kernel/trace/trace_branch.o: warning: objtool: ftrace_likely_update+0x247: return with UACCESS disabled from a UACCESS-safe function

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Message-ID: <202511141118.YnsKzPsM-lkp@intel.com>
Date: Fri, 14 Nov 2025 14:46:01 +0800
From: kernel test robot <lkp@...el.com>
To: Ard Biesheuvel <ardb@...nel.org>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	linux-kernel@...r.kernel.org, Josh Poimboeuf <jpoimboe@...nel.org>
Subject: kernel/trace/trace_branch.o: warning: objtool:
 ftrace_likely_update+0x247: return with UACCESS disabled from a UACCESS-safe
 function

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   6da43bbeb6918164f7287269881a5f861ae09d7e
commit: 73cfc53cc3b6380eccf013049574485f64cb83ca objtool: Fix C jump table annotations for Clang
date:   9 months ago
config: x86_64-buildonly-randconfig-001-20251114 (https://download.01.org/0day-ci/archive/20251114/202511141118.YnsKzPsM-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251114/202511141118.YnsKzPsM-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202511141118.YnsKzPsM-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> kernel/trace/trace_branch.o: warning: objtool: ftrace_likely_update+0x247: return with UACCESS disabled from a UACCESS-safe function

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki