linux-kernel - drivers/media/v4l2-core/v4l2-ctrls-request.o: warning: objtool: v4l2_ctrl_request_complete()+0xace: stack state mismatch: reg1[14]=-2-32 reg2[14]=-1+0

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Message-ID: <202204181650.mPKQyrSo-lkp@intel.com>
Date:   Mon, 18 Apr 2022 17:01:40 +0800
From:   kernel test robot <lkp@...el.com>
To:     Hans Verkuil <hverkuil@...all.nl>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org
Subject: drivers/media/v4l2-core/v4l2-ctrls-request.o: warning: objtool:
 v4l2_ctrl_request_complete()+0xace: stack state mismatch: reg1[14]=-2-32
 reg2[14]=-1+0

Hi Hans,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   b2d229d4ddb17db541098b83524d901257e93845
commit: 71c689dc2e732d4cb190aaf0edea73116b1611bd media: v4l2-ctrls: split up into four source files
date:   11 months ago
config: x86_64-randconfig-s022-20220418 (https://download.01.org/0day-ci/archive/20220418/202204181650.mPKQyrSo-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.2.0-19) 11.2.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=71c689dc2e732d4cb190aaf0edea73116b1611bd
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 71c689dc2e732d4cb190aaf0edea73116b1611bd
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/media/

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/media/v4l2-core/v4l2-ctrls-request.o: warning: objtool: v4l2_ctrl_request_complete()+0xace: stack state mismatch: reg1[14]=-2-32 reg2[14]=-1+0

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