Kernel 5.18 enabled -Werror=array-bounds globally with https://github.com/torvalds/linux/commit/b06a17583f6f810f620f95382b171cc5ce9848ee. Kernel Self-Protection Project was tracking remaining issues in https://github.com/KSPP/linux/issues/181. I think they may have missed covering arch-specific code, as 5.18.0 fails to compile on sparc64 as below: * >> Compiling 5.18.0-gentoo-sparc64 vmlinux ... COMMAND: nice -n10 make -j56 ARCH='sparc64' AS='sparc64-unknown-linux-gnu-as' AR='sparc64-unknown-linux-gnu-ar' CC='sparc64-unknown-linux-gnu-gcc' LD='sparc64-unknown-linux-gnu-ld' NM='sparc64-unknown-linux-gnu-nm' OBJCOPY='sparc64-unknown-linux-gnu-objcopy' OBJDUMP='sparc64-unknown-linux-gnu-objdump' READELF='sparc64-unknown-linux-gnu-readelf' STRIP='sparc64-unknown-linux-gnu-strip' HOSTAR='sparc64-unknown-linux-gnu-ar' HOSTCC='sparc64-unknown-linux-gnu-gcc' HOSTCXX='sparc64-unknown-linux-gnu-g++' HOSTLD='sparc64-unknown-linux-gnu-ld' vmlinux CALL scripts/atomic/check-atomics.sh CALL scripts/checksyscalls.sh <stdin>:1517:2: warning: #warning syscall clone3 not implemented [-Wcpp] CHK include/generated/compile.h CC arch/sparc/mm/init_64.o In function 'kernel_lds_init', inlined from 'report_memory' at arch/sparc/mm/init_64.c:3067:2: arch/sparc/mm/init_64.c:3055:31: error: array subscript -1 is outside array bounds of 'char[]' [-Werror=array-bounds] 3055 | code_resource.end = compute_kern_paddr(_etext - 1); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from ./arch/sparc/include/asm/sections.h:6, from ./include/linux/interrupt.h:21, from ./include/linux/kernel_stat.h:9, from ./include/linux/cgroup.h:26, from ./include/linux/hugetlb.h:9, from arch/sparc/mm/init_64.c:16: ./include/asm-generic/sections.h: In function 'report_memory': ./include/asm-generic/sections.h:35:32: note: at offset -1 into object '_etext' of size [0, 9223372036854775807] 35 | extern char _text[], _stext[], _etext[]; | ^~~~~~ In function 'kernel_lds_init', inlined from 'report_memory' at arch/sparc/mm/init_64.c:3067:2: arch/sparc/mm/init_64.c:3057:31: error: array subscript -1 is outside array bounds of 'char[]' [-Werror=array-bounds] 3057 | data_resource.end = compute_kern_paddr(_edata - 1); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ./include/asm-generic/sections.h: In function 'report_memory': ./include/asm-generic/sections.h:36:32: note: at offset -1 into object '_edata' of size [0, 9223372036854775807] 36 | extern char _data[], _sdata[], _edata[]; | ^~~~~~ In function 'kernel_lds_init', inlined from 'report_memory' at arch/sparc/mm/init_64.c:3067:2: arch/sparc/mm/init_64.c:3059:31: error: array subscript -1 is outside array bounds of 'char[]' [-Werror=array-bounds] 3059 | bss_resource.end = compute_kern_paddr(_end - 1); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ ./include/asm-generic/sections.h: In function 'report_memory': ./include/asm-generic/sections.h:41:13: note: at offset -1 into object '_end' of size [0, 9223372036854775807] 41 | extern char _end[]; | ^~~~ cc1: all warnings being treated as errors make[2]: *** [scripts/Makefile.build:288: arch/sparc/mm/init_64.o] Error 1 make[1]: *** [scripts/Makefile.build:550: arch/sparc/mm] Error 2 Reproducible: Always Portage 3.0.30 (python 3.10.4-final-0, default/linux/sparc/17.0/64ul, gcc-12.1.0, glibc-2.35-r5, 5.17.9-gentoo-sparc64 sparc64) ================================================================= System uname: Linux-5.17.9-gentoo-sparc64-sparc64-sun4v-with-glibc2.35 KiB Mem: 32684336 total, 22271872 free KiB Swap: 0 total, 0 free Timestamp of repository gentoo: Mon, 23 May 2022 16:33:07 +0000 Head commit of repository gentoo: a0f58cba71636bd0532c4c80449079bf13fd6613 sh bash 5.1_p16 ld GNU ld (Gentoo 2.38 p4) 2.38 app-misc/pax-utils: 1.3.4::gentoo app-shells/bash: 5.1_p16::gentoo dev-lang/perl: 5.34.1-r3::gentoo dev-lang/python: 3.10.4_p1::gentoo dev-util/cmake: 3.23.1::gentoo dev-util/meson: 0.62.1::gentoo sys-apps/baselayout: 2.8::gentoo sys-apps/openrc: 0.44.10::gentoo sys-apps/sandbox: 2.29::gentoo sys-devel/autoconf: 2.71-r1::gentoo sys-devel/automake: 1.16.5::gentoo sys-devel/binutils: 2.38-r2::gentoo sys-devel/binutils-config: 5.4.1::gentoo sys-devel/gcc: 12.1.0::gentoo sys-devel/gcc-config: 2.5-r1::gentoo sys-devel/libtool: 2.4.7::gentoo sys-devel/make: 4.3::gentoo sys-kernel/linux-headers: 5.17-r1::gentoo (virtual/os-headers) sys-libs/glibc: 2.35-r5::gentoo Repositories: gentoo location: /var/db/repos/gentoo sync-type: git sync-uri: https://github.com/gentoo-mirror/gentoo sync-user: portage:portage priority: -1000 sync-git-verify-commit-signature: yes guru location: /var/lib/layman/guru sync-type: laymansync sync-uri: https://anongit.gentoo.org/git/repo/proj/guru.git masters: gentoo priority: 50 ACCEPT_KEYWORDS="sparc ~sparc" ACCEPT_LICENSE="@FREE" CBUILD="sparc64-unknown-linux-gnu" CFLAGS="-O3 -mcpu=native -mtune=native -pipe" CHOST="sparc64-unknown-linux-gnu" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-O3 -mcpu=native -mtune=native -pipe" DISTDIR="/var/cache/distfiles" EMERGE_DEFAULT_OPTS="--usepkg --autounmask=n --complete-graph --keep-going --with-bdeps=y" ENV_UNSET="CARGO_HOME 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--omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git" PORTAGE_TMPDIR="/var/tmp" SHELL="/bin/bash" USE="acl bash-completion big-endian bzip2 caps cli crypt dri elogind fortran gdbm gentoo-vm graphite headless-awt iconv ipv6 libbsd libglvnd libtirpc llvm-libunwind lto ncurses nls nptl openmp pam pcre pgo readline sparc split-usr ssl symlink threads udev unicode verify-sig vhosts vim-syntax xattr zlib" ADA_TARGET="gnat_2020" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="libinput" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LUA_SINGLE_TARGET="lua5-1" LUA_TARGETS="lua5-1" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-4 php8-0" POSTGRES_TARGETS="postgres12 postgres13" PYTHON_SINGLE_TARGET="python3_10" PYTHON_TARGETS="python3_10" RUBY_TARGETS="ruby27" USERLAND="GNU" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq proto steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: ADDR2LINE, AR, ARFLAGS, AS, ASFLAGS, CC, CCLD, CONFIG_SHELL, CPP, CPPFLAGS, CTARGET, CXX, CXXFILT, ELFEDIT, EXTRA_ECONF, F77FLAGS, FC, GCOV, GPROF, INSTALL_MASK, LC_ALL, LD, LEX, LFLAGS, LIBTOOL, LINGUAS, MAKE, MAKEFLAGS, NM, OBJCOPY, OBJDUMP, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, RANLIB, READELF, RUSTFLAGS, SIZE, STRINGS, STRIP, YACC, YFLAGS
Created attachment 780434 [details] genkernel.log
Thanks! Could you forward upstream?
(In reply to Sam James from comment #2) > Thanks! Could you forward upstream? Already working on it, this is just for tracking. Kees committed this and he has already used my boxes to solve a previous ia64 issue so shouldn't be too bad.
Linked to fix provided by Kees.
Fixed and released in gentoo-sources-5.18.1