linux-kernel - Re: [PATCH 10/10] x86/rcu: Add THUNK rcu_read_unlock_special

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Date: Fri, 29 Mar 2024 22:46:01 +0800
From: kernel test robot <lkp@...el.com>
To: Lai Jiangshan <jiangshanlai@...il.com>, linux-kernel@...r.kernel.org
Cc: oe-kbuild-all@...ts.linux.dev, rcu@...r.kernel.org, x86@...nel.org,
	Lai Jiangshan <jiangshan.ljs@...group.com>,
	"Paul E. McKenney" <paulmck@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Frederic Weisbecker <frederic@...nel.org>,
	Andy Lutomirski <luto@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH 10/10] x86/rcu: Add THUNK rcu_read_unlock_special_thunk

Hi Lai,

kernel test robot noticed the following build errors:

[auto build test ERROR on paulmck-rcu/dev]
[also build test ERROR on tip/locking/core tip/sched/core tip/x86/asm tip/master linus/master v6.9-rc1 next-20240328]
[cannot apply to tip/x86/core tip/auto-latest]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Lai-Jiangshan/lib-Use-rcu_preempt_depth-to-replace-current-rcu_read_lock_nesting/20240328-155513
base:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev
patch link:    https://lore.kernel.org/r/20240328075318.83039-11-jiangshanlai%40gmail.com
patch subject: [PATCH 10/10] x86/rcu: Add THUNK rcu_read_unlock_special_thunk
config: i386-alldefconfig (https://download.01.org/0day-ci/archive/20240329/202403292233.1m5tWJY5-lkp@intel.com/config)
compiler: gcc-12 (Ubuntu 12.3.0-9ubuntu2) 12.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240329/202403292233.1m5tWJY5-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/202403292233.1m5tWJY5-lkp@intel.com/

All errors (new ones prefixed by >>):

   ld: init/main.o: in function `rest_init':
>> main.c:(.ref.text+0x96): undefined reference to `rcu_read_unlock_special_thunk'
>> ld: main.c:(.ref.text+0x9d): undefined reference to `rcu_read_unlock_special_thunk'
   ld: arch/x86/events/intel/ds.o: in function `intel_pmu_drain_bts_buffer':
>> ds.c:(.text+0x2cd9): undefined reference to `rcu_read_unlock_special_thunk'
   ld: arch/x86/kernel/nmi.o: in function `nmi_handle':
>> nmi.c:(.text+0x2e9): undefined reference to `rcu_read_unlock_special_thunk'
   ld: arch/x86/kernel/alternative.o: in function `__text_poke':
>> alternative.c:(.text+0x531): undefined reference to `rcu_read_unlock_special_thunk'
   ld: arch/x86/mm/init.o:init.c:(.init.text+0xf1): more undefined references to `rcu_read_unlock_special_thunk' follow

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