[kbuild-all] [ojeda-linux:doc 955/959] init/Kconfig:2084: syntax error

tree: https://github.com/ojeda/linux.git doc head: 2fc4925b38062461996c9ae2bdf227d1383117ce commit: cf009425efb0d9533b5bf09ebd304b938e4e5dc2 [955/959] rust: rework Rust toolchain detection config: microblaze-buildonly-randconfig-r005-20220116 compiler: microblaze-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/ojeda/linux/commit/cf009425efb0d9533b5bf09ebd304b938e4... git remote add ojeda-linux https://github.com/ojeda/linux.git git fetch --no-tags ojeda-linux doc git checkout cf009425efb0d9533b5bf09ebd304b938e4e5dc2 COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=microblaze buildonly-randconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=microblaze If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): error: no override and no default toolchain set init/Kconfig:2083: invalid statement init/Kconfig:2089: syntax error init/Kconfig:2088: invalid statement make[2]: *** [scripts/kconfig/Makefile:77: oldconfig] Error 1 make[1]: *** [Makefile:666: oldconfig] Error 2 make: *** [Makefile:226: __sub-make] Error 2 make: Target 'oldconfig' not remade because of errors. -- error: no override and no default toolchain set init/Kconfig:2083: invalid statement init/Kconfig:2089: syntax error init/Kconfig:2088: invalid statement make[2]: *** [scripts/kconfig/Makefile:77: olddefconfig] Error 1 make[1]: *** [Makefile:666: olddefconfig] Error 2 make: *** [Makefile:226: __sub-make] Error 2 make: Target 'olddefconfig' not remade because of errors. vim +2084 init/Kconfig 1944 1945 config SLAB_MERGE_DEFAULT 1946 bool "Allow slab caches to be merged" 1947 default y 1948 help 1949 For reduced kernel memory fragmentation, slab caches can be 1950 merged when they share the same size and other characteristics. 1951 This carries a risk of kernel heap overflows being able to 1952 overwrite objects from merged caches (and more easily control 1953 cache layout), which makes such heap attacks easier to exploit 1954 by attackers. By keeping caches unmerged, these kinds of exploits 1955 can usually only damage objects in the same cache. To disable 1956 merging at runtime, "slab_nomerge" can be passed on the kernel 1957 command line. 1958 1959 config SLAB_FREELIST_RANDOM 1960 bool "Randomize slab freelist" 1961 depends on SLAB || SLUB 1962 help 1963 Randomizes the freelist order used on creating new pages. This 1964 security feature reduces the predictability of the kernel slab 1965 allocator against heap overflows. 1966 1967 config SLAB_FREELIST_HARDENED 1968 bool "Harden slab freelist metadata" 1969 depends on SLAB || SLUB 1970 help 1971 Many kernel heap attacks try to target slab cache metadata and 1972 other infrastructure. This options makes minor performance 1973 sacrifices to harden the kernel slab allocator against common 1974 freelist exploit methods. Some slab implementations have more 1975 sanity-checking than others. This option is most effective with 1976 CONFIG_SLUB. 1977 1978 config SHUFFLE_PAGE_ALLOCATOR 1979 bool "Page allocator randomization" 1980 default SLAB_FREELIST_RANDOM && ACPI_NUMA 1981 help 1982 Randomization of the page allocator improves the average 1983 utilization of a direct-mapped memory-side-cache. See section 1984 5.2.27 Heterogeneous Memory Attribute Table (HMAT) in the ACPI 1985 6.2a specification for an example of how a platform advertises 1986 the presence of a memory-side-cache. There are also incidental 1987 security benefits as it reduces the predictability of page 1988 allocations to compliment SLAB_FREELIST_RANDOM, but the 1989 default granularity of shuffling on the "MAX_ORDER - 1" i.e, 1990 10th order of pages is selected based on cache utilization 1991 benefits on x86. 1992 1993 While the randomization improves cache utilization it may 1994 negatively impact workloads on platforms without a cache. For 1995 this reason, by default, the randomization is enabled only 1996 after runtime detection of a direct-mapped memory-side-cache. 1997 Otherwise, the randomization may be force enabled with the 1998 'page_alloc.shuffle' kernel command line parameter. 1999 2000 Say Y if unsure. 2001 2002 config SLUB_CPU_PARTIAL 2003 default y 2004 depends on SLUB && SMP 2005 bool "SLUB per cpu partial cache" 2006 help 2007 Per cpu partial caches accelerate objects allocation and freeing 2008 that is local to a processor at the price of more indeterminism 2009 in the latency of the free. On overflow these caches will be cleared 2010 which requires the taking of locks that may cause latency spikes. 2011 Typically one would choose no for a realtime system. 2012 2013 config MMAP_ALLOW_UNINITIALIZED 2014 bool "Allow mmapped anonymous memory to be uninitialized" 2015 depends on EXPERT && !MMU 2016 default n 2017 help 2018 Normally, and according to the Linux spec, anonymous memory obtained 2019 from mmap() has its contents cleared before it is passed to 2020 userspace. Enabling this config option allows you to request that 2021 mmap() skip that if it is given an MAP_UNINITIALIZED flag, thus 2022 providing a huge performance boost. If this option is not enabled, 2023 then the flag will be ignored. 2024 2025 This is taken advantage of by uClibc's malloc(), and also by 2026 ELF-FDPIC binfmt's brk and stack allocator. 2027 2028 Because of the obvious security issues, this option should only be 2029 enabled on embedded devices where you control what is run in 2030 userspace. Since that isn't generally a problem on no-MMU systems, 2031 it is normally safe to say Y here. 2032 2033 See Documentation/admin-guide/mm/nommu-mmap.rst for more information. 2034 2035 config SYSTEM_DATA_VERIFICATION 2036 def_bool n 2037 select SYSTEM_TRUSTED_KEYRING 2038 select KEYS 2039 select CRYPTO 2040 select CRYPTO_RSA 2041 select ASYMMETRIC_KEY_TYPE 2042 select ASYMMETRIC_PUBLIC_KEY_SUBTYPE 2043 select ASN1 2044 select OID_REGISTRY 2045 select X509_CERTIFICATE_PARSER 2046 select PKCS7_MESSAGE_PARSER 2047 help 2048 Provide PKCS#7 message verification using the contents of the system 2049 trusted keyring to provide public keys. This then can be used for 2050 module verification, kexec image verification and firmware blob 2051 verification. 2052 2053 config PROFILING 2054 bool "Profiling support" 2055 help 2056 Say Y here to enable the extended profiling support mechanisms used 2057 by profilers. 2058 2059 config RUST 2060 bool "Rust support" 2061 depends on RUST_IS_AVAILABLE 2062 depends on ARM64 || CPU_32v6 || CPU_32v6K || (PPC64 && CPU_LITTLE_ENDIAN) || X86_64 || RISCV 2063 depends on !COMPILE_TEST 2064 depends on !MODVERSIONS 2065 depends on !GCC_PLUGIN_RANDSTRUCT 2066 default n 2067 help 2068 Enables Rust support in the kernel. 2069 2070 This allows other Rust-related options, like drivers written in Rust, 2071 to be selected. 2072 2073 It is also required to be able to load external kernel modules 2074 written in Rust. 2075 2076 See Documentation/rust/ for more information. 2077 2078 If unsure, say N. 2079 2080 config RUSTC_VERSION_TEXT 2081 depends on RUST 2082 string 2083 default $(shell,$(RUSTC) --version) --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org