linux-kernel - [ammarfaizi2-block:stable/linux-stable-rc/queue/5.15 146/150] drivers/regulator/da9121-regulator.o: warning: objtool: da9121_check_device_type.constprop.0.cold()+0xd4: unreachable instruction

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Date:   Thu, 12 May 2022 07:57:57 +0800
From:   kernel test robot <lkp@...el.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     kbuild-all@...ts.01.org,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
        linux-kernel@...r.kernel.org, Sasha Levin <sashal@...nel.org>,
        Borislav Petkov <bp@...e.de>
Subject: [ammarfaizi2-block:stable/linux-stable-rc/queue/5.15 146/150]
 drivers/regulator/da9121-regulator.o: warning: objtool:
 da9121_check_device_type.constprop.0.cold()+0xd4: unreachable instruction

tree:   https://github.com/ammarfaizi2/linux-block stable/linux-stable-rc/queue/5.15
head:   305e905f70311e1b49cc730931a19c3e364f4d8c
commit: 45dc9d706619a6814e4063d5431483f94badb5a1 [146/150] x86: Add straight-line-speculation mitigation
config: x86_64-randconfig-m001-20220509 (https://download.01.org/0day-ci/archive/20220512/202205120752.iz59VMBM-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.2.0-20) 11.2.0
reproduce (this is a W=1 build):
        # https://github.com/ammarfaizi2/linux-block/commit/45dc9d706619a6814e4063d5431483f94badb5a1
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block stable/linux-stable-rc/queue/5.15
        git checkout 45dc9d706619a6814e4063d5431483f94badb5a1
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/ fs/ kernel// lib/ mm// net/

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 >>):

>> drivers/regulator/da9121-regulator.o: warning: objtool: da9121_check_device_type.constprop.0.cold()+0xd4: unreachable instruction
--
>> drivers/target/target_core_spc.o: warning: objtool: spc_emulate_inquiry_std()+0x2b9: unreachable instruction
--
>> drivers/ptp/ptp_clockmatrix.o: warning: objtool: _enable_pll_tod_sync()+0x36: unreachable instruction
--
>> drivers/media/v4l2-core/v4l2-ctrls-core.o: warning: objtool: std_init()+0xab: unreachable instruction
--
>> drivers/media/pci/saa7134/saa7134-cards.o: warning: objtool: saa7134_tuner_callback()+0xc4: unreachable instruction
--
>> net/core/dev.o: warning: objtool: gro_list_prepare()+0x35d: unreachable instruction
--
>> fs/ext4/super.o: warning: objtool: handle_mount_opt()+0x84: unreachable instruction
--
>> net/sched/act_mpls.o: warning: objtool: tcf_mpls_init()+0x197: unreachable instruction
--
>> net/ethtool/ioctl.o: warning: objtool: dev_ethtool()+0x177: unreachable instruction
--
>> lib/zstd/fse_decompress.o: warning: objtool: FSE_decompress_usingDTable()+0x18c: unreachable instruction
--
>> lib/zstd/huf_decompress.o: warning: objtool: HUF_decompress1X2_usingDTable_internal()+0xca: unreachable instruction
..

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