Messages in this thread | | | Date | Mon, 20 Jun 2022 05:59:57 +0800 | From | kernel test robot <> | Subject | [morse:mpam/snapshot/v5.18 128/146] drivers/platform/mpam/mpam_resctrl.c:309:25: warning: variable 'dom' is uninitialized when used here |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git mpam/snapshot/v5.18 head: bac90d25cbdee0fc233b9b1c47d5b6f44101a384 commit: db8847e121228898d170f140698fb01359cff997 [128/146] arm_mpam: resctrl: Add resctrl_arch_rmid_read() and resctrl_arch_reset_rmid() config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20220620/202206200512.vutoaRFq-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project af6d2a0b6825e71965f3e2701a63c239fa0ad70f) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git/commit/?id=db8847e121228898d170f140698fb01359cff997 git remote add morse https://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git git fetch --no-tags morse mpam/snapshot/v5.18 git checkout db8847e121228898d170f140698fb01359cff997 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/perf/ drivers/platform/mpam/
If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/platform/mpam/mpam_resctrl.c:309:25: warning: variable 'dom' is uninitialized when used here [-Wuninitialized] mpam_msmon_reset_mbwu(dom->comp, &cfg); ^~~ drivers/platform/mpam/mpam_resctrl.c:298:30: note: initialize the variable 'dom' to silence this warning struct mpam_resctrl_dom *dom; ^ = NULL 1 warning generated.
vim +/dom +309 drivers/platform/mpam/mpam_resctrl.c
293 294 void resctrl_arch_reset_rmid(struct rdt_resource *r, struct rdt_domain *d, 295 u32 closid, u32 rmid, enum resctrl_event_id eventid) 296 { 297 struct mon_cfg cfg; 298 struct mpam_resctrl_dom *dom; 299 300 if (eventid != QOS_L3_MBM_LOCAL_EVENT_ID) 301 return; 302 303 cfg.mon = resctrl_arch_rmid_idx_encode(closid, rmid); 304 cfg.match_pmg = true; 305 cfg.pmg = rmid; 306 307 if (cdp_enabled) { 308 cfg.partid = closid << 1; > 309 mpam_msmon_reset_mbwu(dom->comp, &cfg); 310 311 cfg.partid += 1; 312 mpam_msmon_reset_mbwu(dom->comp, &cfg); 313 } else { 314 cfg.partid = closid; 315 mpam_msmon_reset_mbwu(dom->comp, &cfg); 316 } 317 } 318
-- 0-DAY CI Kernel Test Service https://01.org/lkp
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