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X-IronPort-AV: E=McAfee;i="6200,9189,10242"; a="247549482" X-IronPort-AV: E=Sophos;i="5.88,328,1635231600"; d="scan'208";a="247549482" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Jan 2022 00:54:28 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.88,328,1635231600"; d="scan'208";a="496555967" Received: from lkp-server01.sh.intel.com (HELO 276f1b88eecb) ([10.239.97.150]) by orsmga002.jf.intel.com with ESMTP; 30 Jan 2022 00:54:26 -0800 Received: from kbuild by 276f1b88eecb with local (Exim 4.92) (envelope-from ) id 1nE5yc-000QHS-5u; Sun, 30 Jan 2022 08:54:26 +0000 Date: Sun, 30 Jan 2022 16:53:29 +0800 From: kernel test robot To: Pavel Begunkov Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Jens Axboe Subject: arch/powerpc/kernel/eeh_driver.c:43:17: sparse: sparse: cast from restricted pci_ers_result_t Message-ID: <202201301501.QOFGw42Q-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f8c7e4ede46fe63ff10000669652648aab09d112 commit: 791f3465c4afde02d7f16cf7424ca87070b69396 io_uring: fix UAF due to missing POLLFREE handling date: 2 weeks ago config: powerpc64-randconfig-s032-20220130 (https://download.01.org/0day-ci/archive/20220130/202201301501.QOFGw42Q-lkp@intel.com/config) compiler: powerpc64-linux-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=791f3465c4afde02d7f16cf7424ca87070b69396 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 791f3465c4afde02d7f16cf7424ca87070b69396 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=powerpc SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot sparse warnings: (new ones prefixed by >>) >> arch/powerpc/kernel/eeh_driver.c:43:17: sparse: sparse: cast from restricted pci_ers_result_t arch/powerpc/kernel/eeh_driver.c:64:17: sparse: sparse: cast from restricted pci_ers_result_t vim +43 arch/powerpc/kernel/eeh_driver.c 67086e32b56481 Wei Yang 2016-03-04 26 30424e386a30d1 Sam Bobroff 2018-05-25 27 static int eeh_result_priority(enum pci_ers_result result) 30424e386a30d1 Sam Bobroff 2018-05-25 28 { 30424e386a30d1 Sam Bobroff 2018-05-25 29 switch (result) { 30424e386a30d1 Sam Bobroff 2018-05-25 30 case PCI_ERS_RESULT_NONE: 30424e386a30d1 Sam Bobroff 2018-05-25 31 return 1; 30424e386a30d1 Sam Bobroff 2018-05-25 32 case PCI_ERS_RESULT_NO_AER_DRIVER: 30424e386a30d1 Sam Bobroff 2018-05-25 33 return 2; 30424e386a30d1 Sam Bobroff 2018-05-25 34 case PCI_ERS_RESULT_RECOVERED: 30424e386a30d1 Sam Bobroff 2018-05-25 35 return 3; 30424e386a30d1 Sam Bobroff 2018-05-25 36 case PCI_ERS_RESULT_CAN_RECOVER: 30424e386a30d1 Sam Bobroff 2018-05-25 37 return 4; 30424e386a30d1 Sam Bobroff 2018-05-25 38 case PCI_ERS_RESULT_DISCONNECT: 30424e386a30d1 Sam Bobroff 2018-05-25 39 return 5; 30424e386a30d1 Sam Bobroff 2018-05-25 40 case PCI_ERS_RESULT_NEED_RESET: 30424e386a30d1 Sam Bobroff 2018-05-25 41 return 6; 30424e386a30d1 Sam Bobroff 2018-05-25 42 default: 30424e386a30d1 Sam Bobroff 2018-05-25 @43 WARN_ONCE(1, "Unknown pci_ers_result value: %d\n", (int)result); 30424e386a30d1 Sam Bobroff 2018-05-25 44 return 0; 30424e386a30d1 Sam Bobroff 2018-05-25 45 } 30424e386a30d1 Sam Bobroff 2018-05-25 46 }; 30424e386a30d1 Sam Bobroff 2018-05-25 47 :::::: The code at line 43 was first introduced by commit :::::: 30424e386a30d1160a0fdf47beafe8b116d0a8f7 powerpc/eeh: Clean up pci_ers_result handling :::::: TO: Sam Bobroff :::::: CC: Michael Ellerman --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org