linux-kernel - [peterz-queue:objtool/core 29/30] vmlinux.o: warning: objtool: enter_from_user_mode+0x61: call to task_stack

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Date:   Sun, 8 May 2022 03:16:34 +0800
From:   kernel test robot <lkp@...el.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [peterz-queue:objtool/core 29/30] vmlinux.o: warning: objtool:
 enter_from_user_mode+0x61: call to task_stack_page() leaves .noinstr.text
 section

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git objtool/core
head:   800d7a995ef68c19a467b612d83fe302138df62e
commit: f8ce83e69bde4cd934b768ae569445fb0781905f [29/30] x86: Always inline on_thread_stack() and current_top_of_stack()
config: x86_64-randconfig-m001 (https://download.01.org/0day-ci/archive/20220508/202205080306.4EAdgsdm-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.2.0-20) 11.2.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?id=f8ce83e69bde4cd934b768ae569445fb0781905f
        git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git
        git fetch --no-tags peterz-queue objtool/core
        git checkout f8ce83e69bde4cd934b768ae569445fb0781905f
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> vmlinux.o: warning: objtool: enter_from_user_mode+0x61: call to task_stack_page() leaves .noinstr.text section
>> vmlinux.o: warning: objtool: syscall_enter_from_user_mode+0x6e: call to task_stack_page() leaves .noinstr.text section
>> vmlinux.o: warning: objtool: syscall_enter_from_user_mode_prepare+0x61: call to task_stack_page() leaves .noinstr.text section
>> vmlinux.o: warning: objtool: irqentry_enter_from_user_mode+0x61: call to task_stack_page() leaves .noinstr.text section

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp