Messages in this thread | | | Date | Wed, 23 Feb 2022 10:04:26 +0800 | From | kernel test robot <> | Subject | Re: [PATCH v2 6/9] KVM: arm64: Detect and handle hypervisor stack overflows |
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Hi Kalesh,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on cfb92440ee71adcc2105b0890bb01ac3cddb8507]
url: https://github.com/0day-ci/linux/commits/Kalesh-Singh/KVM-arm64-Hypervisor-stack-enhancements/20220223-010522 base: cfb92440ee71adcc2105b0890bb01ac3cddb8507 config: arm64-defconfig (https://download.01.org/0day-ci/archive/20220223/202202230932.BKc5SFqd-lkp@intel.com/config) compiler: aarch64-linux-gcc (GCC) 11.2.0 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/0day-ci/linux/commit/7fe99fd40f7c4b2973218045ca5b9c9160524db1 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Kalesh-Singh/KVM-arm64-Hypervisor-stack-enhancements/20220223-010522 git checkout 7fe99fd40f7c4b2973218045ca5b9c9160524db1 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/
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/arm64/kvm/hyp/nvhe/switch.c:197:43: warning: initialized field overwritten [-Woverride-init] 197 | [ESR_ELx_EC_CP15_32] = kvm_hyp_handle_cp15_32, | ^~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/switch.c:197:43: note: (near initialization for 'hyp_exit_handlers[3]') arch/arm64/kvm/hyp/nvhe/switch.c:198:43: warning: initialized field overwritten [-Woverride-init] 198 | [ESR_ELx_EC_SYS64] = kvm_hyp_handle_sysreg, | ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/switch.c:198:43: note: (near initialization for 'hyp_exit_handlers[24]') arch/arm64/kvm/hyp/nvhe/switch.c:199:43: warning: initialized field overwritten [-Woverride-init] 199 | [ESR_ELx_EC_SVE] = kvm_hyp_handle_fpsimd, | ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/switch.c:199:43: note: (near initialization for 'hyp_exit_handlers[25]') arch/arm64/kvm/hyp/nvhe/switch.c:200:43: warning: initialized field overwritten [-Woverride-init] 200 | [ESR_ELx_EC_FP_ASIMD] = kvm_hyp_handle_fpsimd, | ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/switch.c:200:43: note: (near initialization for 'hyp_exit_handlers[7]') arch/arm64/kvm/hyp/nvhe/switch.c:201:43: warning: initialized field overwritten [-Woverride-init] 201 | [ESR_ELx_EC_IABT_LOW] = kvm_hyp_handle_iabt_low, | ^~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/switch.c:201:43: note: (near initialization for 'hyp_exit_handlers[32]') arch/arm64/kvm/hyp/nvhe/switch.c:202:43: warning: initialized field overwritten [-Woverride-init] 202 | [ESR_ELx_EC_DABT_LOW] = kvm_hyp_handle_dabt_low, | ^~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/switch.c:202:43: note: (near initialization for 'hyp_exit_handlers[36]') arch/arm64/kvm/hyp/nvhe/switch.c:203:43: warning: initialized field overwritten [-Woverride-init] 203 | [ESR_ELx_EC_PAC] = kvm_hyp_handle_ptrauth, | ^~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/switch.c:203:43: note: (near initialization for 'hyp_exit_handlers[9]') arch/arm64/kvm/hyp/nvhe/switch.c:208:43: warning: initialized field overwritten [-Woverride-init] 208 | [ESR_ELx_EC_SYS64] = kvm_handle_pvm_sys64, | ^~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/switch.c:208:43: note: (near initialization for 'pvm_exit_handlers[24]') arch/arm64/kvm/hyp/nvhe/switch.c:209:43: warning: initialized field overwritten [-Woverride-init] 209 | [ESR_ELx_EC_SVE] = kvm_handle_pvm_restricted, | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/switch.c:209:43: note: (near initialization for 'pvm_exit_handlers[25]') arch/arm64/kvm/hyp/nvhe/switch.c:210:43: warning: initialized field overwritten [-Woverride-init] 210 | [ESR_ELx_EC_FP_ASIMD] = kvm_handle_pvm_fpsimd, | ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/switch.c:210:43: note: (near initialization for 'pvm_exit_handlers[7]') arch/arm64/kvm/hyp/nvhe/switch.c:211:43: warning: initialized field overwritten [-Woverride-init] 211 | [ESR_ELx_EC_IABT_LOW] = kvm_hyp_handle_iabt_low, | ^~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/switch.c:211:43: note: (near initialization for 'pvm_exit_handlers[32]') arch/arm64/kvm/hyp/nvhe/switch.c:212:43: warning: initialized field overwritten [-Woverride-init] 212 | [ESR_ELx_EC_DABT_LOW] = kvm_hyp_handle_dabt_low, | ^~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/switch.c:212:43: note: (near initialization for 'pvm_exit_handlers[36]') arch/arm64/kvm/hyp/nvhe/switch.c:213:43: warning: initialized field overwritten [-Woverride-init] 213 | [ESR_ELx_EC_PAC] = kvm_hyp_handle_ptrauth, | ^~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/switch.c:213:43: note: (near initialization for 'pvm_exit_handlers[9]') arch/arm64/kvm/hyp/nvhe/switch.c:350:17: warning: no previous prototype for 'hyp_panic' [-Wmissing-prototypes] 350 | void __noreturn hyp_panic(void) | ^~~~~~~~~ >> arch/arm64/kvm/hyp/nvhe/switch.c:372:17: warning: no previous prototype for 'hyp_panic_bad_stack' [-Wmissing-prototypes] 372 | void __noreturn hyp_panic_bad_stack(void) | ^~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/switch.c:377:17: warning: no previous prototype for 'kvm_unexpected_el2_exception' [-Wmissing-prototypes] 377 | asmlinkage void kvm_unexpected_el2_exception(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/hyp_panic_bad_stack +372 arch/arm64/kvm/hyp/nvhe/switch.c
371 > 372 void __noreturn hyp_panic_bad_stack(void) 373 { 374 hyp_panic(); 375 } 376
--- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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