Re: [efi:next] BUILD REGRESSION c0cd4ad8a865f910e646f37b16566a2f408e63a4

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On Sat, 22 Feb 2020 at 07:45, kbuild test robot <lkp@xxxxxxxxx> wrote:
>
> tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git  next
> branch HEAD: c0cd4ad8a865f910e646f37b16566a2f408e63a4  efi: Bump the Linux EFI stub major version number to #1
>
> Regressions in current branch:
>
> drivers/firmware/efi/libstub/file.c:81 efi_open_volume() error: potentially dereferencing uninitialized 'io'.
> drivers/firmware/efi/libstub/x86-stub.c:183 retrieve_apple_device_properties() error: potentially dereferencing uninitialized 'p'.
> drivers/firmware/efi/libstub/x86-stub.c:387 efi_pe_entry() error: potentially dereferencing uninitialized 'image'.
>

For the record, these are all false positives: in each case, the
pointer is guaranteed to have been initialized by a previous EFI boot
service call that takes a pointer to the pointer as an argument, and
guarantees that it is initialized if EFI_SUCCESS is returned, and the
code is not executed otherwise.


> Error ids grouped by kconfigs:
>
> recent_errors
> `-- x86_64-defconfig
>     |-- drivers-firmware-efi-libstub-file.c-efi_open_volume()-error:potentially-dereferencing-uninitialized-io-.
>     |-- drivers-firmware-efi-libstub-x86-stub.c-efi_pe_entry()-error:potentially-dereferencing-uninitialized-image-.
>     `-- drivers-firmware-efi-libstub-x86-stub.c-retrieve_apple_device_properties()-error:potentially-dereferencing-uninitialized-p-.
>
> TIMEOUT after 861m
>
>
> Sorry we cannot finish the testset for your branch within a reasonable time.
> It's our fault -- either some build server is down or some build worker is busy
> doing bisects for _other_ trees. The branch will get more complete coverage and
> possible error reports when our build infrastructure is restored or catches up.
> There will be no more build success notification for this branch head, but you
> can expect reasonably good test coverage after waiting for 1 day.
>
> configs timed out: 1
>
> x86_64                            allnoconfig
>
> configs tested: 145
> configs skipped: 0
>
> arm                              allmodconfig
> arm                               allnoconfig
> arm                              allyesconfig
> arm64                            allmodconfig
> arm64                             allnoconfig
> arm64                            allyesconfig
> arm                         at91_dt_defconfig
> arm                           efm32_defconfig
> arm                          exynos_defconfig
> arm                        multi_v5_defconfig
> arm                        multi_v7_defconfig
> arm                        shmobile_defconfig
> arm                           sunxi_defconfig
> arm64                               defconfig
> sparc                            allyesconfig
> i386                             allyesconfig
> i386                             alldefconfig
> i386                                defconfig
> i386                              allnoconfig
> ia64                             alldefconfig
> ia64                             allmodconfig
> ia64                              allnoconfig
> ia64                             allyesconfig
> ia64                                defconfig
> nios2                         3c120_defconfig
> nios2                         10m50_defconfig
> c6x                        evmc6678_defconfig
> xtensa                          iss_defconfig
> c6x                              allyesconfig
> xtensa                       common_defconfig
> openrisc                 simple_smp_defconfig
> openrisc                    or1ksim_defconfig
> alpha                               defconfig
> csky                                defconfig
> nds32                             allnoconfig
> nds32                               defconfig
> h8300                     edosk2674_defconfig
> h8300                    h8300h-sim_defconfig
> h8300                       h8s-sim_defconfig
> m68k                             allmodconfig
> m68k                       m5475evb_defconfig
> m68k                          multi_defconfig
> m68k                           sun3_defconfig
> arc                                 defconfig
> arc                              allyesconfig
> powerpc                             defconfig
> powerpc                       ppc64_defconfig
> powerpc                          rhel-kconfig
> microblaze                      mmu_defconfig
> microblaze                    nommu_defconfig
> powerpc                           allnoconfig
> mips                           32r2_defconfig
> mips                         64r6el_defconfig
> mips                             allmodconfig
> mips                              allnoconfig
> mips                             allyesconfig
> mips                      fuloong2e_defconfig
> mips                      malta_kvm_defconfig
> parisc                            allnoconfig
> parisc                           allyesconfig
> parisc                generic-32bit_defconfig
> parisc                generic-64bit_defconfig
> x86_64               randconfig-a001-20200221
> x86_64               randconfig-a002-20200221
> x86_64               randconfig-a003-20200221
> i386                 randconfig-a001-20200221
> i386                 randconfig-a002-20200221
> i386                 randconfig-a003-20200221
> alpha                randconfig-a001-20200222
> m68k                 randconfig-a001-20200222
> mips                 randconfig-a001-20200222
> nds32                randconfig-a001-20200222
> parisc               randconfig-a001-20200222
> riscv                randconfig-a001-20200222
> nios2                randconfig-a001-20200221
> c6x                  randconfig-a001-20200221
> microblaze           randconfig-a001-20200221
> sparc64              randconfig-a001-20200221
> h8300                randconfig-a001-20200221
> csky                 randconfig-a001-20200222
> openrisc             randconfig-a001-20200222
> s390                 randconfig-a001-20200222
> sh                   randconfig-a001-20200222
> xtensa               randconfig-a001-20200222
> csky                 randconfig-a001-20200221
> openrisc             randconfig-a001-20200221
> s390                 randconfig-a001-20200221
> sh                   randconfig-a001-20200221
> xtensa               randconfig-a001-20200221
> x86_64               randconfig-b001-20200221
> x86_64               randconfig-b002-20200221
> x86_64               randconfig-b003-20200221
> i386                 randconfig-b001-20200221
> i386                 randconfig-b002-20200221
> i386                 randconfig-b003-20200221
> x86_64               randconfig-d001-20200221
> x86_64               randconfig-d002-20200221
> x86_64               randconfig-d003-20200221
> i386                 randconfig-d001-20200221
> i386                 randconfig-d002-20200221
> i386                 randconfig-d003-20200221
> x86_64               randconfig-h001-20200221
> x86_64               randconfig-h002-20200221
> x86_64               randconfig-h003-20200221
> i386                 randconfig-h001-20200221
> i386                 randconfig-h002-20200221
> i386                 randconfig-h003-20200221
> arc                  randconfig-a001-20200221
> arm                  randconfig-a001-20200221
> arm64                randconfig-a001-20200221
> ia64                 randconfig-a001-20200221
> powerpc              randconfig-a001-20200221
> sparc                randconfig-a001-20200221
> riscv                            allmodconfig
> riscv                             allnoconfig
> riscv                            allyesconfig
> riscv                               defconfig
> riscv                    nommu_virt_defconfig
> riscv                          rv32_defconfig
> s390                             alldefconfig
> s390                             allmodconfig
> s390                              allnoconfig
> s390                             allyesconfig
> s390                          debug_defconfig
> s390                                defconfig
> s390                       zfcpdump_defconfig
> sh                               allmodconfig
> sh                                allnoconfig
> sh                          rsk7269_defconfig
> sh                  sh7785lcr_32bit_defconfig
> sh                            titan_defconfig
> sparc                               defconfig
> sparc64                          allmodconfig
> sparc64                           allnoconfig
> sparc64                          allyesconfig
> sparc64                             defconfig
> um                                  defconfig
> um                             i386_defconfig
> um                           x86_64_defconfig
> x86_64                              fedora-25
> x86_64                                  kexec
> x86_64                                    lkp
> x86_64                                   rhel
> x86_64                         rhel-7.2-clear
> x86_64                               rhel-7.6
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx



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