Package: thunderbird Version: 1:52.2.1-4 Severity: normal Dear Maintainer,
Sometimes, after clicking to "send" in order to send a message, thunderbird hangs and the process ~100% CPU. With strace, I see a lot of futex() calls. I tried to remove some memory segments using ipcrm, and thunderbird no longer hangs and the sending seems to be cancelled (the message editing window is shown). This bug occurs randomly, I cannot identify a way to always reproduce it. I can send the same message one second later. Thanks, -- Denis Dordoigne -- System Information: Debian Release: buster/sid APT prefers unstable APT policy: (500, 'unstable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.9.0-2-amd64 (SMP w/4 CPU cores) Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8), LANGUAGE=fr_FR.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages thunderbird depends on: ii debianutils 4.8.1.1 ii fontconfig 2.12.3-0.2 ii libatk1.0-0 2.24.0-1 ii libc6 2.24-12 ii libcairo-gobject2 1.14.10-1 ii libcairo2 1.14.10-1 ii libdbus-1-3 1.10.20-1 ii libdbus-glib-1-2 0.108-2 ii libevent-2.0-5 2.0.21-stable-3 ii libffi6 3.2.1-6 ii libfontconfig1 2.12.3-0.2 ii libfreetype6 2.8-0.2 ii libgcc1 1:7.1.0-9 ii libgdk-pixbuf2.0-0 2.36.5-2 ii libglib2.0-0 2.52.3-1 ii libgtk-3-0 3.22.16-1 ii libhunspell-1.6-0 1.6.1-2 ii libpango-1.0-0 1.40.6-1 ii libpangocairo-1.0-0 1.40.6-1 ii libpangoft2-1.0-0 1.40.6-1 ii libpixman-1-0 0.34.0-1 ii libstartup-notification0 0.12-4+b2 ii libstdc++6 7.1.0-9 ii libvpx4 1.6.1-3 ii libx11-6 2:1.6.4-3 ii libx11-xcb1 2:1.6.4-3 ii libxcb-shm0 1.12-1 ii libxcb1 1.12-1 ii libxcomposite1 1:0.4.4-2 ii libxdamage1 1:1.1.4-2+b3 ii libxext6 2:1.3.3-1+b2 ii libxfixes3 1:5.0.3-1 ii libxrender1 1:0.9.10-1 ii libxt6 1:1.1.5-1 ii psmisc 23.1-1 ii x11-utils 7.7+3+b1 ii zlib1g 1:1.2.8.dfsg-5 Versions of packages thunderbird recommends: ii hunspell-en-us [hunspell-dictionary] 20070829-7 ii hunspell-fr-classical [hunspell-dictionary] 1:6.1-1 ii lightning 1:52.2.1-4 Versions of packages thunderbird suggests: pn apparmor <none> pn fonts-lyx <none> ii libgssapi-krb5-2 1.15.1-1 -- no debconf information

