kernel test robot <lkp@xxxxxxxxx> writes: > Hi Vitaly, > > FYI, the error/warning still remains. > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y > head: 2b8b2c150867edf2f7c351b27e2ce18865b0a25a > commit: cb188e07105f2216f5efbefac95df4b6ce266906 [2855/9999] KVM: x86: hyper-v: HVCALL_SEND_IPI_EX is an XMM fast hypercall > config: i386-buildonly-randconfig-r003-20221212 > compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1) > 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-rc.git/commit/?id=cb188e07105f2216f5efbefac95df4b6ce266906 > git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git > git fetch --no-tags linux-stable-rc 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 <lkp@xxxxxxxxx> > > 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. > There's a 'fix' for this in kvm/next: commit 7d5e88d301f84a7b64602dbe3640f288223095ea Author: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx> Date: Tue Nov 1 15:53:56 2022 +0100 KVM: x86: hyper-v: Use preallocated buffer in 'struct kvm_vcpu_hv' instead of on-stack 'sparse_banks' but I'm unsure whether it's worth cherry-picking into stable@, I doubt this is a real world issue (i386, clang, Windows guests,...). -- Vitaly
