linux-kernel - fs/btrfs/btrfs.o: warning: objtool: btrfs_mark_buffer

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Date:   Mon, 9 Jan 2023 04:55:37 +0800
From:   kernel test robot <lkp@...el.com>
To:     Josef Bacik <josef@...icpanda.com>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        David Sterba <dsterba@...e.com>,
        Johannes Thumshirn <johannes.thumshirn@....com>,
        Anand Jain <anand.jain@...cle.com>
Subject: fs/btrfs/btrfs.o: warning: objtool: btrfs_mark_buffer_dirty+0x30c:
 unreachable instruction

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   1fe4fd6f5cad346e598593af36caeadc4f5d4fa9
commit: e118578a8df7941a9bbc568851997852e5bc7338 btrfs: move assert helpers out of ctree.h
date:   5 weeks ago
config: x86_64-randconfig-a011-20230109
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e118578a8df7941a9bbc568851997852e5bc7338
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout e118578a8df7941a9bbc568851997852e5bc7338
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash fs/

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

All warnings (new ones prefixed by >>):

>> fs/btrfs/btrfs.o: warning: objtool: btrfs_mark_buffer_dirty+0x30c: unreachable instruction


objdump-func vmlinux.o btrfs_mark_buffer_dirty:

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

View attachment "config" of type "text/plain" (153222 bytes)