On Mon, Jan 3, 2022 at 4:57 PM Moore, Robert <robert.moore@xxxxxxxxx> wrote: > > Are these new warnings, or legacy warnings? They are new, but AFAICS they appear because an old macro, ACPI_PTR_DIFF(), has been used for defining a new one, ACPI_PTR_TO_PHYSADDR(), which is now triggering the old warning in a new way. I guess this could be addressed by applying the Arnd's patch at https://patchwork.kernel.org/project/linux-acpi/patch/20210927121338.938994-1-arnd@xxxxxxxxxx/ , but that's problematic for the upstream. However, I'm wondering if we can do something like the attached patch instead. > -----Original Message----- > From: kernel test robot <lkp@xxxxxxxxx> > Sent: Tuesday, December 28, 2021 10:30 PM > To: Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> > Cc: linux-pm@xxxxxxxxxxxxxxx; devel@xxxxxxxxxx; linux-acpi@xxxxxxxxxxxxxxx > Subject: [Devel] [rafael-pm:bleeding-edge] BUILD SUCCESS WITH WARNING 8d681a5245f0a5cfb20326b4f6578af1adb8676b > > tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git bleeding-edge branch HEAD: 8d681a5245f0a5cfb20326b4f6578af1adb8676b Merge branch 'acpi-sysfs' into bleeding-edge > > Warning reports: > > https://lore.kernel.org/llvm/202112280907.gTYYYuB4-lkp@xxxxxxxxx > > Warning in current branch: > > drivers/acpi/acpica/exregion.c:519:17: warning: performing pointer subtraction with a null pointer has undefined behavior [-Wnull-pointer-subtraction] > > Warning ids grouped by kconfigs: > > clang_recent_errors > |-- i386-randconfig-a001-20211229 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- i386-randconfig-a002-20211229 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- i386-randconfig-a003-20211229 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- i386-randconfig-a004-20211229 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- i386-randconfig-a005-20211229 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- i386-randconfig-a006-20211229 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- i386-randconfig-a011-20211228 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- i386-randconfig-a012-20211228 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- i386-randconfig-a013-20211228 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- i386-randconfig-a014-20211228 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- i386-randconfig-a015-20211228 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- i386-randconfig-a016-20211228 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- x86_64-randconfig-a001-20211229 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- x86_64-randconfig-a002-20211229 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- x86_64-randconfig-a003-20211229 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- x86_64-randconfig-a004-20211229 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- x86_64-randconfig-a005-20211229 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- x86_64-randconfig-a006-20211229 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- x86_64-randconfig-a011-20211228 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- x86_64-randconfig-a012-20211228 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- x86_64-randconfig-a013-20211228 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- x86_64-randconfig-a014-20211228 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- x86_64-randconfig-a015-20211228 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- x86_64-randconfig-a016-20211228 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > |-- x86_64-randconfig-r012-20211228 > | `-- > |drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-w > |ith-a-null-pointer-has-undefined-behavior > `-- x86_64-randconfig-r024-20211228 > `-- drivers-acpi-acpica-exregion.c:warning:performing-pointer-subtraction-with-a-null-pointer-has-undefined-behavior > > elapsed time: 725m > > configs tested: 104 > configs skipped: 3 > > gcc tested configs: > arm allyesconfig > arm allmodconfig > arm defconfig > arm64 defconfig > arm64 allyesconfig > i386 randconfig-c001-20211228 > arm sama7_defconfig > arc nsim_700_defconfig > arm qcom_defconfig > arm pxa3xx_defconfig > powerpc bluestone_defconfig > mips bmips_stb_defconfig > arm ezx_defconfig > sh se7343_defconfig > powerpc skiroot_defconfig > arm lpc18xx_defconfig > arm imx_v6_v7_defconfig > arm pxa910_defconfig > powerpc mpc885_ads_defconfig > powerpc pq2fads_defconfig > arm sama5_defconfig > arm shmobile_defconfig > arc vdk_hs38_smp_defconfig > csky alldefconfig > riscv nommu_k210_sdcard_defconfig > arm randconfig-c002-20211229 > ia64 defconfig > ia64 allmodconfig > ia64 allyesconfig > m68k allmodconfig > m68k defconfig > m68k allyesconfig > nds32 allnoconfig > nios2 defconfig > arc allyesconfig > csky defconfig > alpha defconfig > nds32 defconfig > alpha allyesconfig > nios2 allyesconfig > arc defconfig > sh allmodconfig > h8300 allyesconfig > xtensa allyesconfig > parisc defconfig > s390 allmodconfig > parisc allyesconfig > s390 defconfig > s390 allyesconfig > i386 allyesconfig > sparc defconfig > i386 defconfig > i386 debian-10.3-kselftests > i386 debian-10.3 > sparc allyesconfig > mips allyesconfig > mips allmodconfig > powerpc allnoconfig > powerpc allmodconfig > powerpc allyesconfig > arc randconfig-r043-20211228 > riscv nommu_k210_defconfig > riscv allyesconfig > riscv nommu_virt_defconfig > riscv allnoconfig > riscv defconfig > riscv rv32_defconfig > riscv allmodconfig > um x86_64_defconfig > um i386_defconfig > x86_64 allyesconfig > x86_64 defconfig > x86_64 rhel-8.3 > x86_64 rhel-8.3-func > x86_64 kexec > x86_64 rhel-8.3-kselftests > > clang tested configs: > x86_64 randconfig-a001-20211229 > x86_64 randconfig-a003-20211229 > x86_64 randconfig-a004-20211229 > x86_64 randconfig-a002-20211229 > x86_64 randconfig-a005-20211229 > x86_64 randconfig-a006-20211229 > i386 randconfig-a002-20211229 > i386 randconfig-a003-20211229 > i386 randconfig-a001-20211229 > i386 randconfig-a005-20211229 > i386 randconfig-a006-20211229 > i386 randconfig-a004-20211229 > x86_64 randconfig-a013-20211228 > x86_64 randconfig-a012-20211228 > x86_64 randconfig-a011-20211228 > x86_64 randconfig-a016-20211228 > x86_64 randconfig-a015-20211228 > x86_64 randconfig-a014-20211228 > i386 randconfig-a012-20211228 > i386 randconfig-a011-20211228 > i386 randconfig-a013-20211228 > i386 randconfig-a016-20211228 > i386 randconfig-a014-20211228 > i386 randconfig-a015-20211228 > hexagon randconfig-r041-20211228 > riscv randconfig-r042-20211228 > s390 randconfig-r044-20211228 > hexagon randconfig-r045-20211228 > > --- > 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx > 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--- include/acpi/actypes.h | 4 ++++ include/acpi/platform/aclinux.h | 5 +++++ 2 files changed, 9 insertions(+) Index: linux-pm/include/acpi/platform/aclinux.h =================================================================== --- linux-pm.orig/include/acpi/platform/aclinux.h +++ linux-pm/include/acpi/platform/aclinux.h @@ -213,4 +213,9 @@ #endif /* __KERNEL__ */ +#define acpi_uintptr_t uintptr_t + +#define ACPI_TO_INTEGER(p) ((uintptr_t)(p)) +#define ACPI_OFFSET(d, f) offsetof(d, f) + #endif /* __ACLINUX_H__ */ Index: linux-pm/include/acpi/actypes.h =================================================================== --- linux-pm.orig/include/acpi/actypes.h +++ linux-pm/include/acpi/actypes.h @@ -507,8 +507,12 @@ typedef u64 acpi_integer; /* Pointer/Integer type conversions */ #define ACPI_TO_POINTER(i) ACPI_CAST_PTR (void, (acpi_size) (i)) +#ifndef ACPI_TO_INTEGER #define ACPI_TO_INTEGER(p) ACPI_PTR_DIFF (p, (void *) 0) +#endif +#ifndef ACPI_OFFSET #define ACPI_OFFSET(d, f) ACPI_PTR_DIFF (&(((d *) 0)->f), (void *) 0) +#endif #define ACPI_PTR_TO_PHYSADDR(i) ACPI_TO_INTEGER(i) /* Optimizations for 4-character (32-bit) acpi_name manipulation */
