Your message dated Wed, 19 Oct 2016 19:28:58 +0000 with message-id <[email protected]> and subject line Bug#823460: fixed in lightdm 1.18.2-3 has caused the Debian Bug report #823460, regarding lightdm: SIGPIPE ignored in session to be marked as done.
This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact [email protected] immediately.) -- 823460: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=823460 Debian Bug Tracking System Contact [email protected] with problems
--- Begin Message ---Package: lightdm Version: 1.18.1-1 Severity: serious I have just discovered that my entire X session is running with SIGPIPE ignored. I think this is the fault of lightdm - see below. All Unix programs are entitled to assume that they start with reasonable signal dispositions, which (with a few exceptions) means everything set to SIG_DFL. I have marked this bug "serious" on the grounds that I think this is a release-critical bug. More details: In an xterm: zealot:~> perl -e 'print $SIG{PIPE},"\n"' IGNORE zealot:~> By grepping /proc I have discovered this: * Several processes spawned directly from init (including secnet, a program of which I am the maintainer, which does not mess with SIGPIPE) do not have SIGPIPE ignored: root(ian)@zealot:~> for f in `pidof secnet`; do grep SigIgn /proc/$f/status; done SigIgn: 0000000000000002 SigIgn: 0000000000000002 root(ian)@zealot:~> So I don't think init (sysvinit, in my case) is responsible. * lightdm has SIGPIPE ignored: root(ian)@zealot:~> for f in `pidof lightdm`; do grep SigIgn /proc/$f/status; done SigIgn: 0000000000001000 SigIgn: 0000000000001000 root(ian)@zealot:~> lightdm is of course entitled to run with whatever SIGPIPE disposition it likes, but this is suggestive. * My .xsession script has SIGPIPE ignored: root 4144 3371 0 11:24 ? 00:00:00 lightdm --session-child 13 22 ian 4154 4144 0 11:24 ? 00:00:00 /bin/bash /home/ian/.xsession root(ian)@zealot:~> grep SigIgn /proc/4154/status SigIgn: 0000000000001004 root(ian)@zealot:~> My .xsession script is fairly complicated but does not mention PIPE, and hasn't changed since Decmeber; on another machine running jessie and gdm it has SIGPIPE set to DFL. So this isn't something my .xsession script has done. I have a .dmrc containing this: [Desktop] Language=en_GB.utf8 Layout=gb Session=lightdm-xsession The bad SIGPIPE disposition is inherited by the primary xterm which my xsession runs, and its children including my main session script, my window manager, all my xterms, etc. Thanks for your attention. Ian. -8<- ~/.xession -8<- #!/bin/bash exec >>.configs/xsession-errors 2>&1 echo xsession running . .configs/setenvir rm .configs/mini-desktop-window-id eval `.configs/configure` set if [ -x .configs/xmodmap-kb=$kb ] then .configs/xmodmap-kb=$kb | xmodmap - else xmodmap .configs/xmodmap-kb=$kb fi xrdb -merge .configs/Xresources xrdb -merge .configs/Xresources-colours=$colours xrdb -merge .configs/Xresources-font=$font xrdb -merge .configs/Xresources-size=$size xset b off ${lxtermpath}xterm -C $lxtermopts -T "login" -e .configs/xprofile echo xterm done logging out again rm .configs/xsession-errors .configs/eliforp -8<- -- System Information: Debian Release: stretch/sid APT prefers testing APT policy: (500, 'testing') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.5.0-1-amd64 (SMP w/4 CPU cores) Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.utf-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: sysvinit (via /sbin/init) Versions of packages lightdm depends on: ii adduser 3.114 ii dbus 1.10.8-1 ii debconf [debconf-2.0] 1.5.59 ii libaudit1 1:2.4.5-1+b1 ii libc6 2.22-7 ii libgcrypt20 1.7.0-2 ii libglib2.0-0 2.48.0-1 ii libpam-systemd 229-5 ii libpam0g 1.1.8-3.2 ii libxcb1 1.11.1-1 ii libxdmcp6 1:1.1.2-1.1 ii lightdm-gtk-greeter [lightdm-greeter] 2.0.1-2 Versions of packages lightdm recommends: ii xserver-xorg 1:7.7+15 Versions of packages lightdm suggests: pn accountsservice <none> ii upower 0.99.4-2 -- Configuration Files: /etc/lightdm/lightdm.conf changed: [LightDM] [Seat:*] xserver-command=X -retro [XDMCPServer] [VNCServer] -- debconf information: * shared/default-x-display-manager: lightdm lightdm/daemon_name: /usr/sbin/lightdm
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--- Begin Message ---Source: lightdm Source-Version: 1.18.2-3 We believe that the bug you reported is fixed in the latest version of lightdm, which is due to be installed in the Debian FTP archive. A summary of the changes between this version and the previous one is attached. Thank you for reporting the bug, which will now be closed. If you have further comments please address them to [email protected], and the maintainer will reopen the bug report if appropriate. Debian distribution maintenance software pp. Yves-Alexis Perez <[email protected]> (supplier of updated lightdm package) (This message was generated automatically at their request; if you believe that there is a problem with it please contact the archive administrators by mailing [email protected]) -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Format: 1.8 Date: Wed, 19 Oct 2016 20:56:07 +0200 Source: lightdm Binary: lightdm lightdm-vala liblightdm-gobject-1-0 liblightdm-qt-3-0 liblightdm-gobject-dev liblightdm-qt-dev gir1.2-lightdm-1 Architecture: source Version: 1.18.2-3 Distribution: unstable Urgency: medium Maintainer: Debian Xfce Maintainers <[email protected]> Changed-By: Yves-Alexis Perez <[email protected]> Description: gir1.2-lightdm-1 - Typelib file for liblightdm-1 liblightdm-gobject-1-0 - simple display manager (gobject library) liblightdm-gobject-dev - simple display manager (gobject development files) liblightdm-qt-3-0 - simple display manager (Qt library) liblightdm-qt-dev - simple display manager (Qt development files) lightdm - simple display manager lightdm-vala - simple display manager (Vala files) Closes: 823460 831298 Changes: lightdm (1.18.2-3) unstable; urgency=medium . * debian/control: - add Suggests on xserver-xephyr. closes: #831298 * debian/patches: - 08_reset-SIGPIPE-before-exec added, ignore SIGPIPE during LightDM life but reset it before exec()ing children. closes: #823460 Checksums-Sha1: 5a76eacb05530f3f38e1723d051e752bb11658a6 2401 lightdm_1.18.2-3.dsc d9d34abe7fbd4b0e894a14ea62d2f0a00f21d20c 36940 lightdm_1.18.2-3.debian.tar.xz Checksums-Sha256: e782b2f20eff662174af546db235893cf9b6dbf5b3dbeae8dc4804a5b49a34bc 2401 lightdm_1.18.2-3.dsc c16129a151f846bc0a36872e742166af6b101b30571dc815a09096d95f3d2c1b 36940 lightdm_1.18.2-3.debian.tar.xz Files: 53473aa8013e4fefb016c0238efe38a9 2401 x11 optional lightdm_1.18.2-3.dsc 0cc5ed63998b1f0cae2708ba7d1c723b 36940 x11 optional lightdm_1.18.2-3.debian.tar.xz -----BEGIN PGP SIGNATURE----- iQEcBAEBCgAGBQJYB8YPAAoJEG3bU/KmdcClXtAIAKafqINCLjDt+afrHq0Racih axcLshC4sEpthCZLBTIVJpzREX4m3fC2ym6UBS6vgE8u/enxdeVXoSVNneM/t/JR nKn3WSPHaoi85eYMtU/76h/D7RWJJQuyOgeI0GLDpp8QUKG/OHARF9y2XJxw661G WZZlvbHqtXY0oCpPc9mk9TaHn+xRaDdsh9vdByDDwQcIPVpk94OfMC15rE+lOtUj jYN35F+ksQVHSXBPh10uYh1H1qtQeyhtzOaE63+NvfMGYFDiXuxYUuAVFSujAz54 GY4m63R0JhQyUTdpxsKg4vtNpqGcnSfMR0AoI4OF2fBpShILbyGjaYt3xFPZ/gU= =JxGC -----END PGP SIGNATURE-----
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