The dev-lang/go-bootstrap binary (1.19.1 is the only keyworded version) is not functional on ARCH=loong, which means there is no way to emerge dev-lang/go. Repro's in clean stage3 chroot. + /usr/lib/go-bootstrap/bin/go build -o cmd/dist/dist ./cmd/dist ./make.bash: line 165: 2573 Segmentation fault GO111MODULE=off GOENV=off GOOS= GOARCH= GOEXPERIMENT= GOFLAGS= "$@" Reproducible: Always Portage 3.0.50 (python 3.11.4-final-0, default/linux/loong/22.0/la64v100/lp64d, gcc-13, glibc-2.37-r4, 6.4.10-gentoo-loongarch64 loongarch64) ================================================================= System uname: Linux-6.4.10-gentoo-loongarch64-loongarch64-with-glibc2.37 KiB Mem: 8202304 total, 3980864 free KiB Swap: 0 total, 0 free Timestamp of repository gentoo: Sat, 12 Aug 2023 03:31:32 +0000 sh bash 5.2_p15-r6 ld GNU ld (Gentoo 2.41 p2) 2.41.0 app-misc/pax-utils: 1.3.7::gentoo app-shells/bash: 5.2_p15-r6::gentoo dev-lang/perl: 5.38.0-r1::gentoo dev-lang/python: 3.11.4::gentoo, 3.12.0_rc1_p1::gentoo dev-util/meson: 1.2.1::gentoo sys-apps/baselayout: 2.14::gentoo sys-apps/openrc: 0.48::gentoo sys-apps/sandbox: 2.38::gentoo sys-devel/autoconf: 2.71-r7::gentoo sys-devel/automake: 1.16.5-r1::gentoo sys-devel/binutils: 2.41-r1::gentoo sys-devel/binutils-config: 5.5::gentoo sys-devel/gcc: 13.2.0::gentoo sys-devel/gcc-config: 2.11::gentoo sys-devel/libtool: 2.4.7-r1::gentoo sys-devel/make: 4.4.1-r1::gentoo sys-kernel/linux-headers: 6.4::gentoo (virtual/os-headers) sys-libs/glibc: 2.37-r4::gentoo Repositories: gentoo location: /var/db/repos/gentoo sync-type: rsync sync-uri: rsync://rsync.gentoo.org/gentoo-portage priority: -1000 volatile: False sync-rsync-extra-opts: sync-rsync-verify-jobs: 1 sync-rsync-verify-metamanifest: yes sync-rsync-verify-max-age: 24 ACCEPT_KEYWORDS="loong ~loong" ACCEPT_LICENSE="@FREE" CBUILD="loongarch64-unknown-linux-gnu" CFLAGS=" -pipe -O2" CHOST="loongarch64-unknown-linux-gnu" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/gconf /etc/gentoo-release /etc/sandbox.d /etc/terminfo" CXXFLAGS=" -pipe -O2" DISTDIR="/var/cache/distfiles" EMERGE_DEFAULT_OPTS="--autounmask=y --autounmask-continue=y" ENV_UNSET="CARGO_HOME DBUS_SESSION_BUS_ADDRESS DISPLAY GDK_PIXBUF_MODULE_FILE GOBIN GOPATH PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR XDG_STATE_HOME" FCFLAGS=" -pipe -O2" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs binpkg-multi-instance buildpkg-live config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync multilib-strict news preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS=" -pipe -O2" GENTOO_MIRRORS="http://distfiles.gentoo.org" LANG="en_US.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LEX="flex" MAKEOPTS="-j4" PKGDIR="/var/cache/binpkgs" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --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="/sbin/nologin" USE="acl bzip2 cli crypt dri fortran gdbm iconv ipv6 loong ncurses nls nptl openmp pam pcre readline seccomp split-usr ssl test-rust unicode xattr zlib" ADA_TARGET="gnat_2021" 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="php8-1" POSTGRES_TARGETS="postgres15" PYTHON_SINGLE_TARGET="python3_11" PYTHON_TARGETS="python3_11" RUBY_TARGETS="ruby31" VIDEO_CARDS="dummy fbdev v4l" 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, 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 867670 [details] build.log
Can you try get a bt for completeness?
(In reply to Sam James from comment #2) > Can you try get a bt for completeness? It crashes early. Either in libc or kernel. > During startup program terminated with signal SIGSEGV, Segmentation fault.
I think I've seen a similar problem some time before, but right now I can't reproduce this from a fresh systemd stage3. (I'm using linux-next so not sure if bumping your kernel version to at least 6.5 would help; I see 6.4 in the emerge --info output.)
(In reply to WANG Xuerui from comment #4) > I think I've seen a similar problem some time before, but right now I can't > reproduce this from a fresh systemd stage3. (I'm using linux-next so not > sure if bumping your kernel version to at least 6.5 would help; I see 6.4 in > the emerge --info output.) I just tested this on kernel 6.5.5 and it still occurs.
This still reproduces for me even in a fresh stage3 on kernel 6.6.0.
Triage: I still cannot reproduce with go-bootstrap 1.20.14. Is the bug still present on your hardware? If so, knowing the hardware model would help. I suspect it's a 3A5000 (LA464 uarch) and the Go compiler emitting less dbar's than necessary due to errata.
(In reply to WANG Xuerui from comment #7) > Triage: I still cannot reproduce with go-bootstrap 1.20.14. Is the bug still > present on your hardware? If so, knowing the hardware model would help. I > suspect it's a 3A5000 (LA464 uarch) and the Go compiler emitting less dbar's > than necessary due to errata. Yep, still happens for me with go-bootstrap-1.20.14 and go-1.23.4. On kernel 6.12. Yes, this is a 3A5000. I have all the kernel configs related to LSX turned on, is there anything else needed?
I still cannot reproduce on a Loongson 3C5000L (same uarch as 3A5000). Would you provide your kernel config for confirming this is indeed code-related?
Created attachment 918858 [details] kernel config Sure, here's the kernel config. I was pretty sure you had ssh access to this machine - if not, ping me in #isa-sandbox, should be able to look at it yourself then.
Update based on debugging with xen0n: This is due to the sysctl vm.mmap_min_addr, which on my system was somehow set to 98304. For loong, the max supported is 65536. The default value here is controlled by CONFIG_DEFAULT_MMAP_MIN_ADDR, which is set incorrectly in my kernel config. Changing it to 65536 resolves the issue.
