cmake 3.16.5 generates a segmentation fault while calling uv_loop_close() (from dev-libs/libuv). It does this for something as simple as 'cmake --version'. I tried both libuv versions 1.35.0 and 1.37.0 with the same result. /var/tmp/portage/dev-util/cmake-3.16.5/image/usr/bin # gdb ./cmake GNU gdb (Gentoo 9.1 vanilla) 9.1 Copyright (C) 2020 Free Software Foundation, Inc. ... Reading symbols from ./cmake... (gdb) run --version Starting program: /var/tmp/portage/dev-util/cmake-3.16.5/image/usr/bin/cmake --version [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/libthread_db.so.1". cmake version 3.16.5 CMake suite maintained and supported by Kitware (kitware.com/cmake). Program received signal SIGSEGV, Segmentation fault. 0xb7de7296 in uv_loop_close (loop=0x0) at /usr/src/debug/dev-libs/libuv-1.35.0/libuv-1.35.0/src/uv-common.c:757 757 if (uv__has_active_reqs(loop)) (gdb) up #1 0x0053fab4 in main (ac=<optimized out>, av=0xb09a60) at /var/tmp/portage/dev-util/cmake-3.16.5/work/cmake-3.16.5/Source/cmakemain.cxx:706 706 uv_loop_close(uv_default_loop()); (gdb) up Initial frame selected; you cannot go up. (gdb)
Thank you for the report. We need to have all information at hand before ticket assignment. That is why I ask you to * recompile and attach the logs and * paste the emerge info as described on https://wiki.gentoo.org/wiki/Attach_the_logs_to_the_bug_ticket Please reopen this ticket (Status:UNCONFIRMED) afterwards.
Created attachment 643318 [details] cmake build log
Created attachment 643320 [details] emerge --info cmake
Created attachment 643322 [details] emerge --info libuv
Created attachment 643328 [details] libuv emerge console output
<begin cmake emerge --info> Portage 2.3.99 (python 3.7.7-final-0, default/linux/x86/17.0/desktop/gnome/systemd, gcc-9.3.0, glibc-2.30-r8, 4.4.223.pentiumm-laptop i686) ================================================================= System Settings ================================================================= System uname: Linux-4.4.223.pentiumm-laptop-i686-Intel-R-_Pentium-R-_M_processor_1.80GHz-with-gentoo-2.6 KiB Mem: 772596 total, 88188 free KiB Swap: 523928 total, 514924 free Timestamp of repository gentoo: Sat, 30 May 2020 16:00:01 +0000 Head commit of repository gentoo: db145202cebf184b2f8131a4e3be5da7ba577765 sh bash 5.0_p17 ld GNU ld (Gentoo 2.33.1 p2) 2.33.1 app-shells/bash: 5.0_p17::gentoo dev-lang/perl: 5.30.1::gentoo dev-lang/python: 2.7.18::gentoo, 3.7.7-r2::gentoo, 3.8.2-r2::gentoo dev-util/cmake: 3.9.6::gentoo sys-apps/baselayout: 2.6-r1::gentoo sys-apps/sandbox: 2.13::gentoo sys-devel/autoconf: 2.13-r1::gentoo, 2.69-r4::gentoo sys-devel/automake: 1.16.1-r1::gentoo sys-devel/binutils: 2.33.1-r1::gentoo sys-devel/gcc: 9.3.0::gentoo sys-devel/gcc-config: 2.2.1::gentoo sys-devel/libtool: 2.4.6-r6::gentoo sys-devel/make: 4.2.1-r4::gentoo sys-kernel/linux-headers: 5.4::gentoo (virtual/os-headers) sys-libs/glibc: 2.30-r8::gentoo Repositories: gentoo location: /var/db/repos/gentoo sync-type: rsync sync-uri: rsync://rsync.gentoo.org/gentoo-portage priority: -1000 sync-rsync-verify-max-age: 24 sync-rsync-verify-metamanifest: yes sync-rsync-extra-opts: sync-rsync-verify-jobs: 1 ACCEPT_KEYWORDS="x86" ACCEPT_LICENSE="@FREE" CBUILD="i686-pc-linux-gnu" CFLAGS="-O2 -march=pentium-m -pipe -ggdb -frecord-gcc-switches" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-O2 -march=pentium-m -pipe -ggdb -frecord-gcc-switches" DISTDIR="/var/cache/distfiles" ENV_UNSET="DBUS_SESSION_BUS_ADDRESS DISPLAY GOBIN PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR" FCFLAGS="-O2 -march=pentium-m -pipe -ggdb -frecord-gcc-switches" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news parallel-fetch pid-sandbox preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -march=pentium-m -pipe -ggdb -frecord-gcc-switches" GENTOO_MIRRORS="https://mirrors.rit.edu/gentoo/" LANG="en_US.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j1" 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" USE="X a52 aac acl acpi alsa berkdb bluetooth branding bzip2 cairo cdda cdr cli colord crypt cups dbus dri dts dvd dvdr eds emboss encode evo exif flac fortran gdbm gif gnome gnome-keyring gnome-online-accounts gpm gstreamer gtk iconv icu introspection ipv6 jpeg lcms ldap libnotify libsecret libtirpc mad mng mp3 mp4 mpeg nautilus ncurses networkmanager nls nptl ogg opengl openmp pam pango pcre pdf png policykit ppds pulseaudio qt5 readline sdl seccomp spell split-usr ssl startup-notification svg systemd tcpd tiff tracker truetype udev udisks unicode upower usb vorbis wxwidgets x264 x86 xattr xcb xml xv xvid zlib" ABI_X86="32" ELIBC="glibc" KERNEL="linux" USERLAND="GNU" Unset: CC, CPPFLAGS, CTARGET, CXX, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS ================================================================= Package Settings ================================================================= dev-util/cmake-3.9.6::gentoo was built with the following: USE="ncurses -doc -emacs -qt5 -server -system-jsoncpp -test" CHOST="i486-pc-linux-gnu" CFLAGS="-O2 -march=i486 -pipe" CXXFLAGS="-O2 -march=i486 -pipe" FEATURES="assume-digests binpkg-logs buildpkg config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync multilib-strict news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" <end cmake emerge --info> <begin libuv emerge --info> Portage 2.3.99 (python 3.7.7-final-0, default/linux/x86/17.0/desktop/gnome/systemd, gcc-9.3.0, glibc-2.30-r8, 4.4.223.pentiumm-laptop i686) ================================================================= System Settings ================================================================= System uname: Linux-4.4.223.pentiumm-laptop-i686-Intel-R-_Pentium-R-_M_processor_1.80GHz-with-gentoo-2.6 KiB Mem: 772596 total, 88016 free KiB Swap: 523928 total, 514940 free Timestamp of repository gentoo: Sat, 30 May 2020 16:00:01 +0000 Head commit of repository gentoo: db145202cebf184b2f8131a4e3be5da7ba577765 sh bash 5.0_p17 ld GNU ld (Gentoo 2.33.1 p2) 2.33.1 app-shells/bash: 5.0_p17::gentoo dev-lang/perl: 5.30.1::gentoo dev-lang/python: 2.7.18::gentoo, 3.7.7-r2::gentoo, 3.8.2-r2::gentoo dev-util/cmake: 3.9.6::gentoo sys-apps/baselayout: 2.6-r1::gentoo sys-apps/sandbox: 2.13::gentoo sys-devel/autoconf: 2.13-r1::gentoo, 2.69-r4::gentoo sys-devel/automake: 1.16.1-r1::gentoo sys-devel/binutils: 2.33.1-r1::gentoo sys-devel/gcc: 9.3.0::gentoo sys-devel/gcc-config: 2.2.1::gentoo sys-devel/libtool: 2.4.6-r6::gentoo sys-devel/make: 4.2.1-r4::gentoo sys-kernel/linux-headers: 5.4::gentoo (virtual/os-headers) sys-libs/glibc: 2.30-r8::gentoo Repositories: gentoo location: /var/db/repos/gentoo sync-type: rsync sync-uri: rsync://rsync.gentoo.org/gentoo-portage priority: -1000 sync-rsync-verify-jobs: 1 sync-rsync-verify-metamanifest: yes sync-rsync-verify-max-age: 24 sync-rsync-extra-opts: ACCEPT_KEYWORDS="x86" ACCEPT_LICENSE="@FREE" CBUILD="i686-pc-linux-gnu" CFLAGS="-O2 -march=pentium-m -pipe -ggdb -frecord-gcc-switches" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-O2 -march=pentium-m -pipe -ggdb -frecord-gcc-switches" DISTDIR="/var/cache/distfiles" ENV_UNSET="DBUS_SESSION_BUS_ADDRESS DISPLAY GOBIN PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR" FCFLAGS="-O2 -march=pentium-m -pipe -ggdb -frecord-gcc-switches" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news parallel-fetch pid-sandbox preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -march=pentium-m -pipe -ggdb -frecord-gcc-switches" GENTOO_MIRRORS="https://mirrors.rit.edu/gentoo/" LANG="en_US.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j1" 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" USE="X a52 aac acl acpi alsa berkdb bluetooth branding bzip2 cairo cdda cdr cli colord crypt cups dbus dri dts dvd dvdr eds emboss encode evo exif flac fortran gdbm gif gnome gnome-keyring gnome-online-accounts gpm gstreamer gtk iconv icu introspection ipv6 jpeg lcms ldap libnotify libsecret libtirpc mad mng mp3 mp4 mpeg nautilus ncurses networkmanager nls nptl ogg opengl openmp pam pango pcre pdf png policykit ppds pulseaudio qt5 readline sdl seccomp spell split-usr ssl startup-notification svg systemd tcpd tiff tracker truetype udev udisks unicode upower usb vorbis wxwidgets x264 x86 xattr xcb xml xv xvid zlib" ABI_X86="32" ELIBC="glibc" KERNEL="linux" USERLAND="GNU" Unset: CC, CPPFLAGS, CTARGET, CXX, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS ================================================================= Package Settings ================================================================= dev-libs/libuv-1.37.0::gentoo was built with the following: USE="-static-libs" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs buildpkg compressdebug config-protect-if-modified distlocks ebuild-locks fixlafiles installsources ipc-sandbox merge-sync multilib-strict network-sandbox news parallel-fetch pid-sandbox preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms splitdebug strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" <end libuv emerge --info>
(In reply to Jonas Stein from comment #1) > We need to have all information at hand before ticket assignment. No, we don't.
(In reply to tedheadster from comment #6) > <begin cmake emerge --info> > Portage 2.3.99 (python 3.7.7-final-0, > default/linux/x86/17.0/desktop/gnome/systemd, gcc-9.3.0, glibc-2.30-r8, > 4.4.223.pentiumm-laptop i686) > ================================================================= > System Settings > ================================================================= > System uname: > Linux-4.4.223.pentiumm-laptop-i686-Intel-R-_Pentium-R-_M_processor_1.80GHz- > with-gentoo-2.6 > KiB Mem: 772596 total, 88188 free > KiB Swap: 523928 total, 514924 free That is not a lot of RAM.
Comment on attachment 643318 [details] cmake build log > make: *** [Makefile:74: install] Segmentation fault That is not a segmentation fault in cmake or in libuv.
(In reply to Jeroen Roovers from comment #9) > Comment on attachment 643318 [details] > cmake build log > > > make: *** [Makefile:74: install] Segmentation fault > > That is not a segmentation fault in cmake or in libuv. That message is not the segmentation fault I was referring to. It faults when I run '/usr/bin/cmake --version' and also on the newly built binary run the same way.
I figured most of this out. A patch checking the return code of uv_default_loop() (in Source/cmakemain.cxx line 709) would probably fix it. The problem is in Source/cmakemain.cxx where it does not check for a returned error code from uv_default_loop(). uv_default_loop() returns an error code and the 'uv_loop_t* loop' parameter to uv_loop_close() is still set to NULL. 705 int ret = do_cmake(ac, av); 706 #ifndef CMAKE_BOOTSTRAP 707 cmDynamicLoader::FlushCache(); 708 #endif 709 uv_loop_close(uv_default_loop()); <---- no error code checking 710 return ret; 711 } uv_default_loop() calls up_loop_init(). In uv_loop_init() (libuv-1.37.0/src/unix/loop.c) line 88 it gets an error (-38) and it jumps to the fail_async_init() error handler: 88 err = uv_async_init(loop, &loop->wq_async, uv__work_done); 89 if (err) <---- An error is returned 90 goto fail_async_init; <---- Jump to error handler 91 (gdb) next 89 if (err) (gdb) print err $24 = -38 I will investigate the error code, but it cmake should not assume that the call to uv_default_loop() will always be successful.
To reproduce this bug, run with a kernel without CONFIG_EVENTFD enabled. You must check the return code of uv_default_loop() and not presume it is always successful.
It looks like this problem is not specific to Gentoo Linux. Did you report this upstream yet? https://gitlab.kitware.com/cmake/cmake/-/issues
Upstream now has an issue created. https://gitlab.kitware.com/cmake/cmake/-/issues/20899
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=756046b3193fbc055435914b252bed4eabf3c766 commit 756046b3193fbc055435914b252bed4eabf3c766 Author: Andreas Sturmlechner <asturm@gentoo.org> AuthorDate: 2020-09-05 16:10:47 +0000 Commit: Andreas Sturmlechner <asturm@gentoo.org> CommitDate: 2020-09-06 16:45:36 +0000 dev-util/cmake: Tolerate nullptr from uv_default_loop See also: https://discourse.cmake.org/t/cmake-3-16-5-segmentation-violation/1316 Thanks-to: <tedheadster@gmail.com> Bug: https://bugs.gentoo.org/726962 Package-Manager: Portage-3.0.5, Repoman-3.0.1 Signed-off-by: Andreas Sturmlechner <asturm@gentoo.org> ...{cmake-3.17.4.ebuild => cmake-3.17.4-r1.ebuild} | 1 + .../cmake/files/cmake-3.17.4-uv-check-return.patch | 46 ++++++++++++++++++++++ 2 files changed, 47 insertions(+)
arm64 done
ppc/ppc64 stable
sparc stable
hppa stable
amd64 done
arm done
x86 stable
s390 done all arches done
