* [intel-tdx:kvm-upstream-workaround 7/145] arch/x86/kernel/cpu/tdx/tdx.c:148:30: warning: variable 'err' is uninitialized when used within its own initialization
@ 2022-02-12 5:45 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2022-02-12 5:45 UTC (permalink / raw)
To: Kai Huang; +Cc: llvm, kbuild-all, linux-kernel, Isaku Yamahata
tree: https://github.com/intel/tdx.git kvm-upstream-workaround
head: f40698d38196025a38e79a2bdf22058de944b38a
commit: 474e0c5f940be499b7c8996ba8e64c31f56d21fe [7/145] x86/cpu: Do logical cpu level TDX module initialization
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20220212/202202121324.DClhLKTq-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c7eb84634519e6497be42f5fe323f9a04ed67127)
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
# https://github.com/intel/tdx/commit/474e0c5f940be499b7c8996ba8e64c31f56d21fe
git remote add intel-tdx https://github.com/intel/tdx.git
git fetch --no-tags intel-tdx kvm-upstream-workaround
git checkout 474e0c5f940be499b7c8996ba8e64c31f56d21fe
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kernel/cpu/tdx/ drivers/gpu/drm/i915/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> arch/x86/kernel/cpu/tdx/tdx.c:148:30: warning: variable 'err' is uninitialized when used within its own initialization [-Wuninitialized]
atomic_t *err = (atomic_t *)err;
~~~ ^~~
1 warning generated.
vim +/err +148 arch/x86/kernel/cpu/tdx/tdx.c
144
145 /* SMP call function to run TDH.SYS.LP.INIT */
146 static void smp_call_tdx_cpu_init(void *data)
147 {
> 148 atomic_t *err = (atomic_t *)err;
149
150 if (tdh_sys_lp_init())
151 atomic_set(err, -1);
152 }
153
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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