Buildresult: linus/um-allyesconfig/um-x86_64 built on Dec 9 2020, 18:22

kisskb

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Status:	Failed
Date/Time:	Dec 9 2020, 18:22
Duration:	0:03:41.191732
Builder:	ka2
Revision:	mm/madvise: remove racy mm ownership check (`a68a0262abdaa251e12c53715f48e698a18ef402)`
Target:	linus/um-allyesconfig/um-x86_64
Branch:	linus
Compiler:	um-x86_64 (x86_64-linux-gcc.br_real (Buildroot 2017.05) 5.4.0 / GNU ld (GNU Binutils) 2.27)
Config:	allyesconfig (download)
Log:	Download original Possible errors make[5]: * [Makefile:287: elfdep] Error 1 make[4]: * [kernel/bpf/preload/Makefile:8: kernel/bpf/preload/libbpf.a] Error 2 make[3]: * [scripts/Makefile.build:496: kernel/bpf/preload] Error 2 make[2]: * [scripts/Makefile.build:496: kernel/bpf] Error 2 make[1]: * [Makefile:1805: kernel] Error 2 make: * [Makefile:185: __sub-make] Error 2 Possible warnings (11) WARNING: unmet direct dependencies detected for MFD_CORE .config:4387:warning: override: reassigning to symbol UML_NET_ETHERTAP .config:4389:warning: override: reassigning to symbol UML_NET_SLIP .config:4392:warning: override: reassigning to symbol UML_NET_MCAST .config:4394:warning: override: reassigning to symbol UML_NET_SLIRP WARNING: unmet direct dependencies detected for MFD_CORE WARNING: unmet direct dependencies detected for MFD_CORE WARNING: unmet direct dependencies detected for MFD_CORE WARNING: unmet direct dependencies detected for MFD_CORE arch/um/os-Linux/signal.c:51:1: warning: the frame size of 2976 bytes is larger than 2048 bytes [-Wframe-larger-than=] arch/um/os-Linux/signal.c:95:1: warning: the frame size of 2960 bytes is larger than 2048 bytes [-Wframe-larger-than=] Full Log # git rev-parse -q --verify a68a0262abdaa251e12c53715f48e698a18ef402^{commit} a68a0262abdaa251e12c53715f48e698a18ef402 already have revision, skipping fetch # git checkout -q -f -B kisskb a68a0262abdaa251e12c53715f48e698a18ef402 # git clean -qxdf # < git log -1 # commit a68a0262abdaa251e12c53715f48e698a18ef402 # Author: Minchan Kim <minchan@kernel.org> # Date: Tue Dec 8 20:57:18 2020 -0800 # # mm/madvise: remove racy mm ownership check # # Jann spotted the security hole due to race of mm ownership check. # # If the task is sharing the mm_struct but goes through execve() before # mm_access(), it could skip process_madvise_behavior_valid check. That # makes any advice hint to reach into the remote process. # # This patch removes the mm ownership check. With it, it will lose the # ability that local process could give any advice hint with vector # interface for some reason (e.g., performance). Since there is no # concrete example in upstream yet, it would be better to remove the # abiliity at this moment and need to review when such new advice comes # up. # # Fixes: ecb8ac8b1f14 ("mm/madvise: introduce process_madvise() syscall: an external memory hinting API") # Reported-by: Jann Horn <jannh@google.com> # Suggested-by: Jann Horn <jannh@google.com> # Signed-off-by: Minchan Kim <minchan@kernel.org> # Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-gcc --version # < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-ld --version # < git log --format=%s --max-count=1 a68a0262abdaa251e12c53715f48e698a18ef402 # < make -s -j 8 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 allyesconfig WARNING: unmet direct dependencies detected for MFD_CORE Depends on [n]: HAS_IOMEM [=n] Selected by [y]: - MFD_HI6421_SPMI [=y] && STAGING [=y] && OF [=y] && SPMI [=y] # Added to kconfig CONFIG_STANDALONE=y # Added to kconfig CONFIG_KCOV=n # Added to kconfig CONFIG_GCC_PLUGINS=n # Added to kconfig CONFIG_GCC_PLUGIN_CYC_COMPLEXITY=n # Added to kconfig CONFIG_GCC_PLUGIN_SANCOV=n # Added to kconfig CONFIG_GCC_PLUGIN_LATENT_ENTROPY=n # Added to kconfig CONFIG_GCC_PLUGIN_STRUCTLEAK=n # Added to kconfig CONFIG_GCC_PLUGIN_RANDSTRUCT=n # Added to kconfig CONFIG_UML_NET=n # Added to kconfig CONFIG_UML_NET_ETHERTAP=n # Added to kconfig CONFIG_UML_NET_TUNTAP=n # Added to kconfig CONFIG_UML_NET_SLIP=n # Added to kconfig CONFIG_UML_NET_DAEMON=n # Added to kconfig CONFIG_UML_NET_VDE=n # Added to kconfig CONFIG_UML_NET_MCAST=n # Added to kconfig CONFIG_UML_NET_PCAP=n # Added to kconfig CONFIG_UML_NET_SLIRP=n # Added to kconfig CONFIG_GCOV_KERNEL=n # Added to kconfig CONFIG_DEBUG_INFO_BTF=n # < make -s -j 8 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 help # make -s -j 8 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 olddefconfig .config:4387:warning: override: reassigning to symbol UML_NET_ETHERTAP .config:4389:warning: override: reassigning to symbol UML_NET_SLIP .config:4392:warning: override: reassigning to symbol UML_NET_MCAST .config:4394:warning: override: reassigning to symbol UML_NET_SLIRP WARNING: unmet direct dependencies detected for MFD_CORE Depends on [n]: HAS_IOMEM [=n] Selected by [y]: - MFD_HI6421_SPMI [=y] && STAGING [=y] && OF [=y] && SPMI [=y] # make -s -j 8 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 WARNING: unmet direct dependencies detected for MFD_CORE Depends on [n]: HAS_IOMEM [=n] Selected by [y]: - MFD_HI6421_SPMI [=y] && STAGING [=y] && OF [=y] && SPMI [=y] WARNING: unmet direct dependencies detected for MFD_CORE Depends on [n]: HAS_IOMEM [=n] Selected by [y]: - MFD_HI6421_SPMI [=y] && STAGING [=y] && OF [=y] && SPMI [=y] WARNING: unmet direct dependencies detected for MFD_CORE Depends on [n]: HAS_IOMEM [=n] Selected by [y]: - MFD_HI6421_SPMI [=y] && STAGING [=y] && OF [=y] && SPMI [=y] /kisskb/src/arch/um/os-Linux/signal.c: In function 'sig_handler_common': /kisskb/src/arch/um/os-Linux/signal.c:51:1: warning: the frame size of 2976 bytes is larger than 2048 bytes [-Wframe-larger-than=] } ^ /kisskb/src/arch/um/os-Linux/signal.c: In function 'timer_real_alarm_handler': /kisskb/src/arch/um/os-Linux/signal.c:95:1: warning: the frame size of 2960 bytes is larger than 2048 bytes [-Wframe-larger-than=] } ^ Auto-detecting system features: ... libelf: [ [31mOFF[m ] ... zlib: [ [31mOFF[m ] ... bpf: [ [32mon[m ] No libelf found make[5]: * [Makefile:287: elfdep] Error 1 make[4]: * [/kisskb/src/kernel/bpf/preload/Makefile:8: kernel/bpf/preload/libbpf.a] Error 2 make[3]: * [/kisskb/src/scripts/Makefile.build:496: kernel/bpf/preload] Error 2 make[3]: * Waiting for unfinished jobs.... make[2]: * [/kisskb/src/scripts/Makefile.build:496: kernel/bpf] Error 2 make[2]: * Waiting for unfinished jobs.... make[1]: * [/kisskb/src/Makefile:1805: kernel] Error 2 make[1]: * Waiting for unfinished jobs.... make: *** [Makefile:185: __sub-make] Error 2 Command 'make -s -j 8 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 ' returned non-zero exit status 2 # rm -rf /kisskb/build/linus_um-allyesconfig_um-x86_64 # Build took: 0:03:41.191732

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