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d="scan'208";a="355830350" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Aug 2022 05:51:59 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.93,236,1654585200"; d="scan'208";a="557006389" Received: from lkp-server02.sh.intel.com (HELO 3d2a4d02a2a9) ([10.239.97.151]) by orsmga003.jf.intel.com with ESMTP; 14 Aug 2022 05:51:57 -0700 Received: from kbuild by 3d2a4d02a2a9 with local (Exim 4.96) (envelope-from ) id 1oND5x-00005z-06; Sun, 14 Aug 2022 12:51:57 +0000 Date: Sun, 14 Aug 2022 20:51:14 +0800 From: kernel test robot To: Vitaly Kuznetsov Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Paolo Bonzini Subject: [stable:linux-5.15.y 5373/9027] arch/x86/kvm/hyperv.c:2185:5: warning: stack frame size (1036) exceeds limit (1024) in 'kvm_hv_hypercall' Message-ID: <202208142025.NHKErAjq-lkp@intel.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Hi Vitaly, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-5.15.y head: 7217df81279835a7aee62a07aabb7b8fb8c766f2 commit: cb188e07105f2216f5efbefac95df4b6ce266906 [5373/9027] KVM: x86: hyper-v: HVCALL_SEND_IPI_EX is an XMM fast hypercall config: i386-allmodconfig (https://download.01.org/0day-ci/archive/20220814/202208142025.NHKErAjq-lkp@intel.com/config) compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 52cd00cabf479aa7eb6dbb063b7ba41ea57bce9e) 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://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?id=cb188e07105f2216f5efbefac95df4b6ce266906 git remote add stable https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git git fetch --no-tags stable linux-5.15.y git checkout cb188e07105f2216f5efbefac95df4b6ce266906 # 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=i386 SHELL=/bin/bash arch/x86/kvm/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> arch/x86/kvm/hyperv.c:2185:5: warning: stack frame size (1036) exceeds limit (1024) in 'kvm_hv_hypercall' [-Wframe-larger-than] int kvm_hv_hypercall(struct kvm_vcpu *vcpu) ^ 1 warning generated. vim +/kvm_hv_hypercall +2185 arch/x86/kvm/hyperv.c 4ad81a91119df7 Vitaly Kuznetsov 2021-05-21 2184 e83d58874ba1de Andrey Smetanin 2015-07-03 @2185 int kvm_hv_hypercall(struct kvm_vcpu *vcpu) e83d58874ba1de Andrey Smetanin 2015-07-03 2186 { 4e62aa96d6e55c Vitaly Kuznetsov 2021-07-30 2187 struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu); bd38b32053eb1c Siddharth Chandrasekaran 2021-05-26 2188 struct kvm_hv_hcall hc; bd38b32053eb1c Siddharth Chandrasekaran 2021-05-26 2189 u64 ret = HV_STATUS_SUCCESS; e83d58874ba1de Andrey Smetanin 2015-07-03 2190 e83d58874ba1de Andrey Smetanin 2015-07-03 2191 /* e83d58874ba1de Andrey Smetanin 2015-07-03 2192 * hypercall generates UD from non zero cpl and real mode e83d58874ba1de Andrey Smetanin 2015-07-03 2193 * per HYPER-V spec e83d58874ba1de Andrey Smetanin 2015-07-03 2194 */ b3646477d458fb Jason Baron 2021-01-14 2195 if (static_call(kvm_x86_get_cpl)(vcpu) != 0 || !is_protmode(vcpu)) { e83d58874ba1de Andrey Smetanin 2015-07-03 2196 kvm_queue_exception(vcpu, UD_VECTOR); 0d9c055eaaf41b Andrey Smetanin 2016-02-11 2197 return 1; e83d58874ba1de Andrey Smetanin 2015-07-03 2198 } e83d58874ba1de Andrey Smetanin 2015-07-03 2199 :::::: The code at line 2185 was first introduced by commit :::::: e83d58874ba1de74c13d3c6b05f95a023c860d25 kvm/x86: move Hyper-V MSR's/hypercall code into hyperv.c file :::::: TO: Andrey Smetanin :::::: CC: Paolo Bonzini -- 0-DAY CI Kernel Test Service https://01.org/lkp