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Bug 694442 - >=dev-qt/qtwebengine-5.12.3 - QtWebEngineProc: segfault in libQt5WebEngineCore.so.5.12.3
Summary: >=dev-qt/qtwebengine-5.12.3 - QtWebEngineProc: segfault in libQt5WebEngineCor...
Status: RESOLVED WORKSFORME
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: AMD64 Linux
: Normal normal (vote)
Assignee: Qt Bug Alias
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-09-15 07:39 UTC by Erik Quaeghebeur
Modified: 2020-11-15 09:39 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


Attachments
backtrace of cordump (output of gdb ‘backtrace’ command) (backtrace.txt,4.28 KB, text/plain)
2019-09-18 10:54 UTC, Erik Quaeghebeur
Details

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Description Erik Quaeghebeur 2019-09-15 07:39:25 UTC
Since rebooting my laptop today, I noticed that qtwebengine-5.12.3 crashes (I use it in Falkon, because Firefox also crashes when not in safe mode, but that may be a different issue). From the log:

sep 15 09:27:55 sysoppad kernel: QtWebEngineProc[11483]: segfault at 77 ip 00007f28a00b82f4 sp 00007ffcdd5d6dd0 error 4 in libQt5WebEngineCore.so.5.12.3[7f289f1e9000+4c38000]
sep 15 09:27:55 sysoppad kernel: Code: 63 4c 24 48 48 89 ca 49 89 44 cc 08 5b 83 c2 01 83 e2 07 41 89 54 24 48 41 5c 5d c3 66 2e 0f 1f 84 00 00 00 00 00 48 8b 50 ff <66> 83 7a 0b 7f 77 ce 48 8b 50 ff 0f b7 52 0b 83 e2 07 66 83 fa 05
sep 15 09:27:55 sysoppad systemd[1]: Started Process Core Dump (PID 13099/UID 0).
sep 15 09:27:56 sysoppad systemd-coredump[13101]: Process 11483 (QtWebEngineProc) of user 1000 dumped core.
sep 15 09:27:56 sysoppad systemd[1]: systemd-coredump@2-13099-0.service: Succeeded.

The crash occurs for some, but not all webpages loaded in Falkon.

Reproducible: Always

Steps to Reproduce:
1. Load page in Falkon, e.g., https://stackoverflow.com/questions/54723598/
2. Falkon says that loading the page failed
3. Logs say that qtwebengine crashed
Actual Results:  
qtwebengine crashes, Falkon cannot be used for many webpages

Expected Results:  
no crash, Falkon works as it did before

See https://forums.gentoo.org/viewtopic-p-8370680.html where someone else reported the crash (and I responded)

emerge --info:

Portage 2.3.69 (python 3.6.5-final-0, default/linux/amd64/17.1/desktop/plasma/systemd, gcc-8.3.0, glibc-2.29-r2, 4.19.66-gentoo x86_64)
=================================================================
System uname: Linux-4.19.66-gentoo-x86_64-Intel-R-_Core-TM-_i7-2620M_CPU_@_2.70GHz-with-gentoo-2.6
KiB Mem:    16351692 total,  11560080 free
KiB Swap:   16777212 total,  16777212 free
Timestamp of repository gentoo: Sun, 15 Sep 2019 05:45:51 +0000
Head commit of repository gentoo: 7aca0a0aa4247cfaf10318c488821c990ff3475a

Timestamp of repository raiagent: Fri, 13 Sep 2019 19:43:20 +0000
Head commit of repository raiagent: c42a92f83381cc8c0fa1c5db4db499c57097163c

sh bash 4.4_p23-r1
ld GNU ld (Gentoo 2.32 p2) 2.32.0
app-shells/bash:          4.4_p23-r1::gentoo
dev-java/java-config:     2.2.0-r4::gentoo
dev-lang/perl:            5.28.2-r1::gentoo
dev-lang/python:          2.7.15::gentoo, 3.6.5::gentoo
dev-util/cmake:           3.14.6::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:       1.11.6-r3::gentoo, 1.16.1-r1::gentoo
sys-devel/binutils:       2.32-r1::gentoo
sys-devel/gcc:            8.3.0-r1::gentoo
sys-devel/gcc-config:     2.0::gentoo
sys-devel/libtool:        2.4.6-r3::gentoo
sys-devel/make:           4.2.1-r4::gentoo
sys-kernel/linux-headers: 4.19::gentoo (virtual/os-headers)
sys-libs/glibc:           2.29-r2::gentoo
Repositories:

gentoo
    location: /var/db/repos/gentoo
    sync-type: git
    sync-uri: https://github.com/gentoo-mirror/gentoo.git
    priority: -1000
    sync-git-verify-commit-signature: true

ownDevel
    location: /usr/local/portage
    masters: gentoo

raiagent
    location: /var/db/repos/raiagent
    sync-type: git
    sync-uri: https://github.com/gentoo-mirror/raiagent.git
    masters: gentoo

Installed sets: @openmdao-requirements
ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="@FREE"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=native -O2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/config /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 /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c"
CXXFLAGS="-march=native -O2 -pipe"
DISTDIR="/var/cache/distfiles"
EMERGE_DEFAULT_OPTS="--misspell-suggestions=n --with-bdeps=y"
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 -pipe"
FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs candy cgroup 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 sandbox sfperms split-elog split-log strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="ftp://mirror.leaseweb.com/gentoo/ ftp://ftp.snt.utwente.nl/pub/os/linux/gentoo ftp://ftp.halifax.rwth-aachen.de/gentoo/ ftp://ftp.free.fr/mirrors/ftp.gentoo.org/"
LANG="nl_BE.UTF-8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
LINGUAS="nl en_US en"
MAKEOPTS="-j3"
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 activities alsa amd64 berkdb bluetooth branding bzip2 cairo cdda cdr cli crypt cups cxx dbus declarative dri dts dvd dvdr egl emboss encode eselect-ldso exif fam fftw flac fortran gdbm gif glamor gmp gpm iconv icu ipv6 jpeg kde kipi kwallet lcms ldap libnotify libtirpc mad mmap mng mp3 mp4 mpeg multilib ncurses networkmanager nls nptl ogg opengl openmp opus pam pango pch pcre pdf phonon plasma png policykit ppds pulseaudio qml qt5 readline resolvconf sdl seccomp semantic-desktop spell split-usr ssl startup-notification svg system-harfbuzz system-icu system-jpeg system-libevent system-libvpx system-sqlite systemd tcpd tiff truetype udev udisks unicode upower usb vaapi vorbis wayland widgets wifi x264 xattr xcb xcomposite xml xv xvid zeroconf zlib" ABI_X86="64" ADA_TARGET="gnat_2018" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" 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" CPU_FLAGS_X86="aes avx mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="evdev synaptics" KERNEL="linux" L10N="nl en-US en" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" NETBEANS_MODULES="apisupport cnd groovy gsf harness ide identity j2ee java mobility nb php profiler soa visualweb webcommon websvccommon xml" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-2" POSTGRES_TARGETS="postgres10 postgres11" PYTHON_SINGLE_TARGET="python3_6" PYTHON_TARGETS="python2_7 python3_6" RUBY_TARGETS="ruby24 ruby25" USERLAND="GNU" VIDEO_CARDS="fbdev intel modesetting vesa" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset:  CC, CPPFLAGS, CTARGET, CXX, INSTALL_MASK, LC_ALL, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
Comment 1 Jeroen Roovers (RETIRED) gentoo-dev 2019-09-15 08:40:11 UTC
You forgot to attach the output of your gdb backtrace.
Comment 2 robin 2019-09-15 13:59:17 UTC
I get a similar problem using Konqueror, Firefox is OK.

Sep 15 20:54:20 localhost kernel QtWebEngineProc[17596]: segfault at 77 ip 00007f4e303f2d7c sp 00007ffeeb6e4420
error 4 in libQt5WebEngineCore.so.5.12.5[7f4e2f475000+5065000]
Sep 15 20:54:20 localhost kernel Code: 02 00 00 00 75 20 48 63 4b 48 48 89 ca 48 89 44 cb 08 83 c2
01 83 e2 07 89 53 48 5b 41 5c 5d c3 66 0f 1f 44 00 00 48 8b 50 ff <66> 83 7a 0b
7f 77 d5 48 8b 50 ff 0f b7 52 0b 83 e2 07 66 83 fa 05

I don't get a core dump. Using Qt-5.12.5.
Comment 3 Erik Quaeghebeur 2019-09-18 10:54:34 UTC
Created attachment 590202 [details]
backtrace of cordump (output of gdb ‘backtrace’ command)

I hope this helps; it does look non-informative though.
Comment 4 Dennis Schridde 2020-01-27 19:14:52 UTC
Here kmail is crashing since 2019-12-21:

Process 25980 (kmail) of user 1000 dumped core.

Stack trace of thread 26052:
#0  0x00007f84dfbd1ad1 _ZN4base9RandBytesEPvm (libQt5WebEngineCore.so.5 + 0x309dad1)
#1  0x00007f84dfba6896 _ZN4base5Token12CreateRandomEv (libQt5WebEngineCore.so.5 + 0x3072896)
#2  0x00007f84dfbc01b9 _ZN4base16UnguessableToken6CreateEv (libQt5WebEngineCore.so.5 + 0x308c1b9)
#3  0x00007f84dfbdb0ad _ZN4base6subtle26PlatformSharedMemoryRegion6CreateENS1_4ModeEmb (libQt5WebEngineCore.so.5 + 0x30a70ad)
#4  0x00007f84dfb535ac _ZN4base6subtle26PlatformSharedMemoryRegion14CreateWritableEm (libQt5WebEngineCore.so.5 + 0x301f5ac)
#5  0x00007f84dfb5572b _ZN4base26WritableSharedMemoryRegion6CreateEm (libQt5WebEngineCore.so.5 + 0x302172b)
#6  0x00007f84de031d40 _ZN4mojo4core14NodeController18CreateSharedBufferEm (libQt5WebEngineCore.so.5 + 0x14fdd40)
#7  0x00007f84de03ac8b _ZN4mojo4core22SharedBufferDispatcher6CreateERK29MojoCreateSharedBufferOptionsPNS0_14NodeControllerEmP13scoped_refptrIS1_E (libQt5WebEngineCore.so.5 + 0x1506c8b)
#8  0x00007f84de028528 _ZN4mojo4core4Core18CreateSharedBufferEmPK29MojoCreateSharedBufferOptionsPj (libQt5WebEngineCore.so.5 + 0x14f4528)
#9  0x00007f84dffd6e1c _ZN4mojo18SharedBufferHandle6CreateEm (libQt5WebEngineCore.so.5 + 0x34a2e1c)
#10 0x00007f84ddc4600e _ZN3gpu27GpuProcessHostActivityFlagsC2Ev (libQt5WebEngineCore.so.5 + 0x111200e)
#11 0x00007f84e08b097f _ZN3viz11GpuHostImplC2EPNS0_8DelegateEN4mojo23PendingAssociatedRemoteINS_5mojom7VizMainEEENS0_10InitParamsE (libQt5WebEngineCore.so.5 + 0x3d7c97f)
#12 0x00007f84df21d795 _ZN7content14GpuProcessHost4InitEv (libQt5WebEngineCore.so.5 + 0x26e9795)
#13 0x00007f84df21dc35 _ZN7content14GpuProcessHost3GetENS_14GpuProcessKindEb (libQt5WebEngineCore.so.5 + 0x26e9c35)
#14 0x00007f84df20bcc1 _ZN7content28BrowserGpuChannelHostFactory16EstablishRequest13EstablishOnIOEv (libQt5WebEngineCore.so.5 + 0x26d7cc1)
#15 0x00007f84dfb8345e _ZN4base13TaskAnnotator7RunTaskEPKcPNS_11PendingTaskE (libQt5WebEngineCore.so.5 + 0x304f45e)
#16 0x00007f84dfb94509 _ZN4base16sequence_manager8internal35ThreadControllerWithMessagePumpImpl10DoWorkImplEPNS0_7LazyNowEPb (libQt5WebEngineCore.so.5 + 0x3060509)
#17 0x00007f84dfb94a07 _ZN4base16sequence_manager8internal35ThreadControllerWithMessagePumpImpl10DoSomeWorkEv (libQt5WebEngineCore.so.5 + 0x3060a07)
#18 0x00007f84dfbd9f26 _ZN4base19MessagePumpLibevent3RunEPNS_11MessagePump8DelegateE (libQt5WebEngineCore.so.5 + 0x30a5f26)
#19 0x00007f84dfb939ef _ZN4base16sequence_manager8internal35ThreadControllerWithMessagePumpImpl3RunEbNS_9TimeDeltaE (libQt5WebEngineCore.so.5 + 0x305f9ef)
#20 0x00007f84dfb70f99 _ZN4base7RunLoop14RunWithTimeoutENS_9TimeDeltaE (libQt5WebEngineCore.so.5 + 0x303cf99)
#21 0x00007f84df017c74 _ZN7content23BrowserProcessSubThread11IOThreadRunEPN4base7RunLoopE (libQt5WebEngineCore.so.5 + 0x24e3c74)
#22 0x00007f84dfba29e8 _ZN4base6Thread10ThreadMainEv (libQt5WebEngineCore.so.5 + 0x306e9e8)
#23 0x00007f84dfbd5505 _ZN4base12_GLOBAL__N_110ThreadFuncEPv (libQt5WebEngineCore.so.5 + 0x30a1505)
#24 0x00007f84e59a342a start_thread (libpthread.so.0 + 0x842a)
#25 0x00007f84e82254bf __clone (libc.so.6 + 0x10c4bf)

Stack trace of thread 25982:
#0  0x00007f84e82191cb __poll (libc.so.6 + 0x1001cb)
#1  0x00007f84e4e23142 n/a (libxcb.so.1 + 0xc142)
#2  0x00007f84e4e24dea xcb_wait_for_event (libxcb.so.1 + 0xddea)
#3  0x00007f84d21ec1b8 _ZN14QXcbEventQueue3runEv (libQt5XcbQpa.so.5 + 0x6a1b8)
#4  0x00007f84e864d9af _ZN14QThreadPrivate5startEPv (libQt5Core.so.5 + 0xcb9af)
#5  0x00007f84e59a342a start_thread (libpthread.so.0 + 0x842a)
#6  0x00007f84e82254bf __clone (libc.so.6 + 0x10c4bf

Stack trace of thread 25980:
#0  0x00007f84e82147e8 __read (libc.so.6 + 0xfb7e8)
#1  0x00007f84e98b5a6e n/a (libKF5Crash.so.5 + 0x3a6e)
#2  0x00007f84e98b5d6a n/a (libKF5Crash.so.5 + 0x3d6a)
#3  0x00007f84e98b61e8 n/a (libKF5Crash.so.5 + 0x41e8)
#4  0x00007f84e98b6d81 n/a (libKF5Crash.so.5 + 0x4d81)
#5  0x00007f84e98b7232 _ZN6KCrash19defaultCrashHandlerEi (libKF5Crash.so.5 + 0x5232)
#6  0x00007f84e8153610 __restore_rt (libc.so.6 + 0x3a610)
#7  0x00007f84dfbc25d0 _ZNK4base5Value8FindPathENS_16BasicStringPieceINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEE (libQt5WebEngineCore.so.5 + 0x308e5d0)
#8  0x00007f84dd51c1d1 GenerateId (libQt5WebEngineCore.so.5 + 0x9e81d1)
#9  0x00007f84dd4b7bfd _ZN15QtWebEngineCore14ProfileAdapterC2ERK7QString (libQt5WebEngineCore.so.5 + 0x983bfd)
#10 0x00007f84e4aca8b1 _ZN17QWebEngineProfileC2EP7QObject (libQt5WebEngineWidgets.so.5 + 0x2e8b1)
#11 0x00007f84e7077522 _ZN15WebEngineViewer13WebEnginePageC2EP7QObject (libKF5WebEngineViewer.so.5 + 0x4e522)
#12 0x00007f84e7532b3f _ZN13MessageViewer17MailWebEnginePageC1EP7QObject (libKF5MessageViewer.so.5 + 0x148b3f)
#13 0x00007f84e7530f66 _ZN13MessageViewer17MailWebEngineViewC1EP17KActionCollectionP7QWidget (libKF5MessageViewer.so.5 + 0x146f66)
#14 0x00007f84e74d21af n/a (libKF5MessageViewer.so.5 + 0xe81af)
#15 0x00007f84e74dd921 n/a (libKF5MessageViewer.so.5 + 0xf3921)
#16 0x00007f84e74c84c2 _ZN13MessageViewer6ViewerC1EP7QWidgetS2_P17KActionCollection (libKF5MessageViewer.so.5 + 0xde4c2)
#17 0x00007f84e9a692d3 _ZN11KMReaderWinC2EP7QWidgetS1_P17KActionCollection (libkmailprivate.so.5 + 0xf82d3)
#18 0x00007f84e9ab67b9 _ZN12KMMainWidget13createWidgetsEv (libkmailprivate.so.5 + 0x1457b9)
#19 0x00007f84e9ac3409 _ZN12KMMainWidgetC2EP7QWidgetP13KXMLGUIClientP17KActionCollectionRK28QExplicitlySharedDataPointerI13KSharedConfigE (libkmailprivate.so.5 + 0x152409)
#20 0x00007f84e9a6597b _ZN9KMMainWinC1EP7QWidget (libkmailprivate.so.5 + 0xf497b)
#21 0x00007f84e9a7d367 _ZN8KMKernel10openReaderEbb (libkmailprivate.so.5 + 0x10c367)
#22 0x00007f84e9a8235f _ZN8KMKernel6actionEbbbRK7QStringS2_S2_S2_S2_RK4QUrlRK5QListIS3_ERK11QStringListS2_S2_S2_ (libkmailprivate.so.5 + 0x11135f)
#23 0x00007f84e9a83e24 _ZN8KMKernel17handleCommandLineEbRK11QStringListRK7QString (libkmailprivate.so.5 + 0x112e24)
#24 0x000055fc5abb2b02 _ZN16KMailApplication8activateERK11QStringListRK7QString (kmail + 0x3b02)
#25 0x000055fc5abb27d4 _ZN16KMailApplication23delayedInstanceCreationERK11QStringListRK7QString (kmail + 0x37d4)
#26 0x00007f84e813ce9b __libc_start_main (libc.so.6 + 0x23e9b)
#27 0x000055fc5abb28fa _start (kmail + 0x38fa)

Stack trace of thread 26076:
#0  0x00007f84e82254b1 __clone (libc.so.6 + 0x10c4b1)
#1  0x0000000000000000 n/a (n/a + 0x0)


Portage 2.3.85 (python 3.6.9-final-0, default/linux/amd64/17.1/desktop/plasma/systemd, gcc-9.2.0, glibc-2.30-r3, 5.4.14 x86_64)
=================================================================
                         System Settings
=================================================================
System uname: Linux-5.4.14-x86_64-AMD_Ryzen_5_2400G_with_Radeon_Vega_Graphics-with-gentoo-2.6
KiB Mem:    14132664 total,    471364 free
KiB Swap:          0 total,         0 free
Timestamp of repository gentoo: Sun, 26 Jan 2020 20:45:01 +0000
Head commit of repository gentoo: 4563b30e623ddcebc6e510bc51fb97af7ce9272e
Head commit of repository flatpak-overlay: c9991ea665dd52e4dc60912027da5a1c736ecd85

Head commit of repository local: 9d7d1585ab48d2ebd84b7c8f64a3e6a7136a1fc5

sh bash 5.0_p11
ld GNU gold (Gentoo 2.32 p2 2.32.0) 1.16
ccache version 3.7.7 [disabled]
app-shells/bash:          5.0_p11::gentoo
dev-java/java-config:     2.2.0-r4::gentoo
dev-lang/perl:            5.30.1::gentoo
dev-lang/python:          2.7.17-r1::gentoo, 3.5.7::gentoo, 3.6.10::gentoo, 3.7.6::gentoo, 3.8.1::gentoo, 3.9.0_alpha2::gentoo
dev-util/ccache:          3.7.7::gentoo
dev-util/cmake:           3.16.3::gentoo
dev-util/pkgconfig:       0.29.2::gentoo
sys-apps/baselayout:      2.6-r1::gentoo
sys-apps/sandbox:         2.18::gentoo
sys-devel/autoconf:       2.13-r1::gentoo, 2.69-r5::gentoo
sys-devel/automake:       1.11.6-r3::gentoo, 1.13.4-r2::gentoo, 1.16.1-r2::gentoo
sys-devel/binutils:       2.32-r1::gentoo, 2.33.1-r1::gentoo
sys-devel/gcc:            9.2.0-r3::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-r3::gentoo
Repositories:

gentoo
    location: /var/cache/portage/gentoo
    sync-type: rsync
    sync-uri: rsync://rsync.de.gentoo.org/gentoo-portage
    priority: -1000
    sync-rsync-extra-opts: 
    sync-rsync-verify-jobs: 1
    sync-rsync-verify-max-age: 24
    sync-rsync-verify-metamanifest: yes

flatpak-overlay
    location: /var/db/repos/flatpak-overlay
    sync-type: git
    sync-uri: https://github.com/fosero/flatpak-overlay.git
    masters: gentoo

local
    location: /var/cache/portage/local
    sync-type: git
    sync-uri: https://github.com/devurandom/gentoo-overlay.git
    masters: gentoo
    priority: 1000

ACCEPT_KEYWORDS="amd64 ~amd64"
ACCEPT_LICENSE="@FREE"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-pipe -O2 -march=znver1"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /etc/grs/systems.conf /usr/lib64/libreoffice/program/sofficerc /usr/share/config /usr/share/gnupg/qualified.txt /usr/share/maven-bin-3.6/conf"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php7.3/ext-active/ /etc/php/apache2-php7.4/ext-active/ /etc/php/cgi-php7.3/ext-active/ /etc/php/cgi-php7.4/ext-active/ /etc/php/cli-php7.3/ext-active/ /etc/php/cli-php7.4/ext-active/ /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="-pipe -O2 -march=znver1"
DISTDIR="/var/cache/portage/distfiles"
EMERGE_DEFAULT_OPTS="--keep-going --nospinner --verbose-conflicts"
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 -pipe"
FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs buildsyspkg cgroup compressdebug config-protect-if-modified distlocks ebuild-locks fakeroot fixlafiles ipc-sandbox merge-sync mount-sandbox multilib-strict network-sandbox news parallel-fetch parallel-install pid-sandbox preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="http://ftp.spline.inf.fu-berlin.de/mirrors/gentoo/ http://ftp-stud.hs-esslingen.de/pub/Mirrors/gentoo/ http://distfiles.gentoo.org"
LANG="en_US.UTF-8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,--hash-style=gnu"
MAKEOPTS="-j6 -l4"
PKGDIR="/var/cache/portage/packages"
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="/tmp"
USE="7z 7zip X a52 aac aacplus aacs acl acpi activities aio alsa amd64 appindicator appstream archive audit avahi ayatana bash-completion bdplus berkdb blake2 bluetooth bluray branding brotli bs2b btrfs bzip2 cairo caps cdda cddb cdio cdr celt chromaprint cjk clang cli clipboard color-management colord conntrack crypt cups cxx d3d9 dav1d dbus declarative device-mapper dirac djvu dri drm dts dvb dvd dvdr ed25519 editorconfig egl elf emboss encode epub evdev exif faudio fax fbcon ffmpeg fftw filecaps firefox firewalld fish-completion fits flac fontconfig fontforge fortran fribidi gamepad gbm gdal gdbm geoclue geolocation gif git gmp gnupg google googledrive gpg gps graphicsmagick gstreamer gtk gtk3 gzip harfbuzz hdf5 heif http2 ibus iconv icu idn imlib inotify introspection ipv6 jemalloc jpeg jpeg2k json kde kipi kms kwallet ladspa latex lcms ldap libatomic libglvnd libidn2 libinput libnotify libproxy libsecret libsoxr libtirpc libvirt lm-sensors lrz lv2 lvm lz4 lzma lzo mad mariadb markdown mbim mercurial mjpeg mng mobi modemmanager modplug mp3 mp4 mpeg mplayer mpris mtp multilib mysql ncurses netlink networkmanager nls nptl office ofx ogg openal opencl opencv openexr opengl openh264 openmax openmp opus pam pango pcap pch pcre pcre2 pdf pgo phonon pixman pkcs7 plasma pm-utils png policykit postscript ppds prison pulseaudio python qml qrcode qt5 raw rdp readline redfish samba sasl scanner schroedinger screencast sctp sdl sdl2 seccomp semantic-desktop share smartcard snappy sparse speech speex spell ssl startup-notification steamruntime stemmer svg systemd systemtap tbb tcpd teamd telepathy tga theora threads thunderbolt tiff timezone tmux truetype tslib udev udisks uinput unicode unwind upnp upnp-av upower usb utempter v4l v4l2 vaapi vdpau vkd3d vorbis vpx vulkan wasm wavpack wayland webchannel webengine webkit webp widgets wmf wps x264 x265 xattr xcb xcomposite xinerama xkb xml xmp xrandr xscreensaver xv xvid xwayland xz yaml zeroconf zeromq zimg zlib zstd" ABI_X86="64" ADA_TARGET="gnat_2018" ALSA_CARDS="hda-intel" 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" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx avx2 f16c fma3 mmx mmxext pclmul popcnt sha sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3" ELIBC="glibc" ENLIGHTENMENT_MODULES="*" 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" GRUB_PLATFORMS="efi-64" INPUT_DEVICES="joystick libinput" KERNEL="linux" L10N="de de-DE en en-GB ar fa tr ja ko zh zh-CN zh-TW" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="nlpsolver scripting-javascript wiki-publisher" LIRC_DEVICES="devinput" LLVM_TARGETS="AMDGPU BPF RISCV WebAssembly" LUA_TARGET="lua5-2" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-2" POSTGRES_TARGETS="postgres10 postgres11" PYTHON_SINGLE_TARGET="python3_6" PYTHON_TARGETS="python2_7 python3_6 pypy pypy3" QEMU_SOFTMMU_TARGETS="riscv32 riscv64 x86_64" QEMU_USER_TARGETS="riscv32 riscv64" RUBY_TARGETS="ruby24 ruby25" USERLAND="GNU" VIDEO_CARDS="amdgpu virgl" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset:  CC, CPPFLAGS, CTARGET, CXX, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

=================================================================
                        Package Settings
=================================================================

kde-apps/kmail-19.12.1::gentoo was built with the following:
USE="handbook -debug -test" ABI_X86="(64)"
CFLAGS="-pipe -O2 -march=znver1 -g"
CXXFLAGS="-pipe -O2 -march=znver1 -g"
FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs buildsyspkg cgroup compressdebug config-protect-if-modified distlocks ebuild-locks fakeroot fixlafiles ipc-sandbox merge-sync mount-sandbox multilib-strict network-sandbox news parallel-fetch parallel-install pid-sandbox preserve-libs protect-owned sandbox sfperms splitdebug strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"


dev-qt/qtwebengine-5.14.0::gentoo was built with the following:
USE="alsa pulseaudio system-ffmpeg system-icu widgets -bindist -debug -designer -jumbo-build -pax_kernel -test" ABI_X86="(64)"


The issue has been reported upstream: https://bugs.kde.org/show_bug.cgi?id=415403