CC: [email protected] CC: [email protected] CC: [email protected] TO: Tianyu Lan <[email protected]> CC: Wei Liu <[email protected]> CC: Michael Kelley <[email protected]>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: df0cc57e057f18e44dac8e6c18aba47ab53202f9 commit: faff44069ff538ccdfef187c4d7ec83d22dfb3a4 x86/hyperv: Add Write/Read MSR registers via ghcb page date: 2 months ago :::::: branch date: 14 hours ago :::::: commit date: 2 months ago config: x86_64-randconfig-c007-20220108 (https://download.01.org/0day-ci/archive/20220110/[email protected]/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project f3a344d2125fa37e59bae1b0874442c650a19607) 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/torvalds/linux.git/commit/?id=faff44069ff538ccdfef187c4d7ec83d22dfb3a4 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout faff44069ff538ccdfef187c4d7ec83d22dfb3a4 # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 clang-analyzer If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> clang-analyzer warnings: (new ones prefixed by >>) 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 4 warnings generated. Suppressed 4 warnings (4 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 4 warnings generated. Suppressed 4 warnings (4 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 4 warnings generated. drivers/base/platform.c:577:3: warning: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy] strcpy(pa->name, name); ^~~~~~ drivers/base/platform.c:577:3: note: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 strcpy(pa->name, name); ^~~~~~ Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 2 warnings generated. Suppressed 2 warnings (2 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 2 warnings generated. Suppressed 2 warnings (2 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 2 warnings generated. Suppressed 2 warnings (2 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 2 warnings generated. Suppressed 2 warnings (2 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 4 warnings generated. Suppressed 4 warnings (4 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. >> arch/x86/include/asm/mshyperv.h:212:2: warning: Undefined or garbage value >> returned to caller [clang-analyzer-core.uninitialized.UndefReturn] return value; ^ drivers/hv/hv.c:275:2: note: Calling 'hv_synic_enable_regs' hv_synic_enable_regs(cpu); ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/hv/hv.c:203:5: note: Loop condition is false. Exiting loop = per_cpu_ptr(hv_context.cpu_context, cpu); ^ include/linux/percpu-defs.h:263:47: note: expanded from macro 'per_cpu_ptr' #define per_cpu_ptr(ptr, cpu) ({ (void)(cpu); VERIFY_PERCPU_PTR(ptr); }) ^ include/linux/percpu-defs.h:259:2: note: expanded from macro 'VERIFY_PERCPU_PTR' __verify_pcpu_ptr(__p); \ ^ include/linux/percpu-defs.h:217:37: note: expanded from macro '__verify_pcpu_ptr' #define __verify_pcpu_ptr(ptr) \ ^ drivers/hv/hv.c:210:19: note: Calling 'hv_get_register' simp.as_uint64 = hv_get_register(HV_REGISTER_SIMP); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/include/asm/mshyperv.h:206:2: note: 'value' declared without an initial value u64 value; ^~~~~~~~~ arch/x86/include/asm/mshyperv.h:208:6: note: Left side of '&&' is true if (hv_is_synic_reg(reg) && hv_isolation_type_snp()) ^ arch/x86/include/asm/mshyperv.h:208:30: note: Assuming the condition is true if (hv_is_synic_reg(reg) && hv_isolation_type_snp()) ^~~~~~~~~~~~~~~~~~~~~~~ arch/x86/include/asm/mshyperv.h:208:2: note: Taking true branch if (hv_is_synic_reg(reg) && hv_isolation_type_snp()) ^ arch/x86/include/asm/mshyperv.h:209:3: note: Calling 'hv_ghcb_msr_read' hv_ghcb_msr_read(reg, &value); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/include/asm/mshyperv.h:191:59: note: Returning without writing to '*value' static inline void hv_ghcb_msr_read(u64 msr, u64 *value) {} ^ arch/x86/include/asm/mshyperv.h:209:3: note: Returning from 'hv_ghcb_msr_read' hv_ghcb_msr_read(reg, &value); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/include/asm/mshyperv.h:212:2: note: Undefined or garbage value returned to caller return value; ^ ~~~~~ Suppressed 2 warnings (2 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 4 warnings generated. drivers/extcon/extcon-rt8973a.c:25:8: warning: Excessive padding in 'struct muic_irq' (8 padding bytes, where 0 is optimal). Optimal fields order: name, irq, virq, consider reordering the fields or adding explicit padding members [clang-analyzer-optin.performance.Padding] struct muic_irq { ~~~~~~~^~~~~~~~~~ drivers/extcon/extcon-rt8973a.c:25:8: note: Excessive padding in 'struct muic_irq' (8 padding bytes, where 0 is optimal). Optimal fields order: name, irq, virq, consider reordering the fields or adding explicit padding members struct muic_irq { ~~~~~~~^~~~~~~~~~ Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 4 warnings generated. drivers/extcon/extcon-sm5502.c:24:8: warning: Excessive padding in 'struct muic_irq' (8 padding bytes, where 0 is optimal). Optimal fields order: name, irq, virq, consider reordering the fields or adding explicit padding members [clang-analyzer-optin.performance.Padding] struct muic_irq { ~~~~~~~^~~~~~~~~~ drivers/extcon/extcon-sm5502.c:24:8: note: Excessive padding in 'struct muic_irq' (8 padding bytes, where 0 is optimal). Optimal fields order: name, irq, virq, consider reordering the fields or adding explicit padding members struct muic_irq { ~~~~~~~^~~~~~~~~~ Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 3 warnings generated. Suppressed 3 warnings (3 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 2 warnings generated. Suppressed 2 warnings (2 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 4 warnings generated. drivers/iio/industrialio-buffer.c:760:2: warning: Dereference of null pointer [clang-analyzer-core.NullDereference] list_for_each_entry(buffer, &iio_dev_opaque->buffer_list, buffer_list) { ^ include/linux/list.h:630:13: note: expanded from macro 'list_for_each_entry' pos = list_next_entry(pos, member)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/list.h:555:2: note: expanded from macro 'list_next_entry' vim +212 arch/x86/include/asm/mshyperv.h faff44069ff538 Tianyu Lan 2021-10-25 203 faff44069ff538 Tianyu Lan 2021-10-25 204 static inline u64 hv_get_register(unsigned int reg) faff44069ff538 Tianyu Lan 2021-10-25 205 { faff44069ff538 Tianyu Lan 2021-10-25 206 u64 value; faff44069ff538 Tianyu Lan 2021-10-25 207 faff44069ff538 Tianyu Lan 2021-10-25 208 if (hv_is_synic_reg(reg) && hv_isolation_type_snp()) faff44069ff538 Tianyu Lan 2021-10-25 209 hv_ghcb_msr_read(reg, &value); faff44069ff538 Tianyu Lan 2021-10-25 210 else faff44069ff538 Tianyu Lan 2021-10-25 211 rdmsrl(reg, value); faff44069ff538 Tianyu Lan 2021-10-25 @212 return value; faff44069ff538 Tianyu Lan 2021-10-25 213 } faff44069ff538 Tianyu Lan 2021-10-25 214 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected] _______________________________________________ kbuild mailing list -- [email protected] To unsubscribe send an email to [email protected]
