linux-kernel - Re: [PATCH] reiserfs: avoid objtool warning after panic

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Date:   Fri, 16 Dec 2022 06:51:38 +0800
From:   kernel test robot <lkp@...el.com>
To:     Arnd Bergmann <arnd@...nel.org>, reiserfs-devel@...r.kernel.org
Cc:     oe-kbuild-all@...ts.linux.dev, Arnd Bergmann <arnd@...db.de>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] reiserfs: avoid objtool warning after panic

Hi Arnd,

I love your patch! Perhaps something to improve:

[auto build test WARNING on soc/for-next]
[also build test WARNING on linus/master v6.1 next-20221215]
[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/Arnd-Bergmann/reiserfs-avoid-objtool-warning-after-panic/20221216-003104
base:   https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git for-next
patch link:    https://lore.kernel.org/r/20221215162759.3883282-1-arnd%40kernel.org
patch subject: [PATCH] reiserfs: avoid objtool warning after panic
config: x86_64-randconfig-a006
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/6717d6cf61015a15ca3b1a8623a5f3b2569312be
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Arnd-Bergmann/reiserfs-avoid-objtool-warning-after-panic/20221216-003104
        git checkout 6717d6cf61015a15ca3b1a8623a5f3b2569312be
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        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/reiserfs/bitmap.o: warning: objtool: get_left_neighbor.cold+0x25: unreachable instruction
--
>> fs/reiserfs/do_balan.o: warning: objtool: check_internal_node+0x22e: unreachable instruction
--
>> fs/reiserfs/namei.o: warning: objtool: search_by_entry_key+0x40c: unreachable instruction
--
>> fs/reiserfs/inode.o: warning: objtool: reiserfs_update_sd_size.cold+0x48: unreachable instruction
--
>> fs/reiserfs/dir.o: warning: objtool: reiserfs_readdir_inode.cold+0x33: unreachable instruction
--
>> fs/reiserfs/fix_node.o: warning: objtool: create_virtual_node+0x16b7: unreachable instruction
--
>> fs/reiserfs/super.o: warning: objtool: add_save_link.cold+0x29: unreachable instruction
--
>> fs/reiserfs/objectid.o: warning: objtool: reiserfs_get_unused_objectid.cold+0x1d: unreachable instruction
--
>> fs/reiserfs/lbalance.o: warning: objtool: leaf_paste_in_buffer+0xcb6: unreachable instruction
--
>> fs/reiserfs/stree.o: warning: objtool: search_by_key+0x189d: unreachable instruction
--
>> fs/reiserfs/tail_conversion.o: warning: objtool: direct2indirect+0x89e: unreachable instruction
..


objdump-func vmlinux.o get_left_neighbor.cold:

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

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