Your message dated Thu, 04 Aug 2016 07:48:37 +0000 with message-id <[email protected]> and subject line Bug#662860: fixed in ctwm 3.7-4 has caused the Debian Bug report #662860, regarding ctwm: SIGSEGV when changing workspaces 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.) -- 662860: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=662860 Debian Bug Tracking System Contact [email protected] with problems
--- Begin Message ---Package: ctwm Version: 3.7-3.2 Severity: important Tags: upstream patch Dear Maintainer, I'm a longtime CTWM user who finally got tired of the random crashes that occur, typically when I'm switching workspaces. I can sometimes go for a month without seeing them and sometimes it happens several times a day. I've analyzed this to the point where I can see that code in DispatchEvent() is occasionally leaving the global Scr pointer NULL which causes a SIGSEGV on our next pass through the loop in HandleEvents(). I've provided a patch that adds a few lines of defensive code which seems to have improved the situation, though I have not analyzed the root cause, which appears to be that, for unknown reasons, either XFindContext() or FindScreenInfo() seem to be unable to return the answer expected of them. --Michael O'Donnell BEGIN PATCH: --- events.c.b0rken 2012-03-06 15:10:42.093677349 -0500 +++ events.c 2012-03-06 15:19:52.369161662 -0500 @@ -435,21 +435,25 @@ */ Bool DispatchEvent2 (void) { Window w = Event.xany.window; StashEventTime (&Event); + ScreenInfo *lastScr = Scr; /* XXX_MIKE - assume Scr OK on entry... */ if (XFindContext (dpy, w, TwmContext, (XPointer *) &Tmp_win) == XCNOENT) Tmp_win = NULL; if (XFindContext (dpy, w, ScreenContext, (XPointer *)&Scr) == XCNOENT) { Scr = FindScreenInfo (WindowOfEvent (&Event)); } dumpevent(&Event); - if (!Scr) return False; + if (!Scr) { + Scr = lastScr; /* XXX_MIKE - try not to leave Scr NULL */ + return False; + } if (Scr->Root != Scr->RealRoot) FixRootEvent (&Event); #ifdef SOUNDS play_sound(Event.type); #endif @@ -473,21 +477,25 @@ */ Bool DispatchEvent (void) { Window w = Event.xany.window; StashEventTime (&Event); + ScreenInfo *lastScr = Scr; /* XXX_MIKE - assume Scr OK on entry... */ if (XFindContext (dpy, w, TwmContext, (XPointer *) &Tmp_win) == XCNOENT) Tmp_win = NULL; if (XFindContext (dpy, w, ScreenContext, (XPointer *)&Scr) == XCNOENT) { Scr = FindScreenInfo (WindowOfEvent (&Event)); } dumpevent(&Event); - if (!Scr) return False; + if (!Scr) { + Scr = lastScr; /* XXX_MIKE - try not to leave Scr NULL */ + return False; + } if (captive) { if ((Event.type == ConfigureNotify) && (Event.xconfigure.window == Scr->CaptiveRoot)) { ConfigureRootWindow (&Event); return (False); END PATCH -- System Information: Debian Release: wheezy/sid APT prefers testing APT policy: (990, 'testing'), (500, 'unstable') Architecture: i386 (i686) Kernel: Linux 3.1.0 (SMP w/2 CPU cores) Locale: LANG=en_US, LC_CTYPE=en_US (charmap=ISO-8859-1) Shell: /bin/sh linked to /bin/bash Versions of packages ctwm depends on: ii libc6 2.13-26 ii libice6 2:1.0.7-2 ii libjpeg8 8d-1 ii librplay3 3.3.2-14 ii libsm6 2:1.2.0-2 ii libx11-6 2:1.4.4-4 ii libxext6 2:1.3.0-3 ii libxmu6 2:1.1.0-3 ii libxpm4 1:3.5.9-4 ii libxt6 1:1.1.1-2 ii m4 1.4.16-2 ii x11-common 1:7.6+11 ctwm recommends no packages. ctwm suggests no packages. -- Configuration Files: /etc/X11/ctwm/system.ctwmrc [Errno 2] No such file or directory: u'/etc/X11/ctwm/system.ctwmrc' -- no debconf information -- debsums errors found: debsums: missing file /usr/bin/ctwm (from ctwm package) Note that the above mentioned debsums errors are due to my having built and installed a private version during debug....
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--- Begin Message ---Source: ctwm Source-Version: 3.7-4 We believe that the bug you reported is fixed in the latest version of ctwm, 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. Adam Borowski <[email protected]> (supplier of updated ctwm 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: SHA256 Format: 1.8 Date: Thu, 04 Aug 2016 09:33:17 +0200 Source: ctwm Binary: ctwm Architecture: source Version: 3.7-4 Distribution: unstable Urgency: medium Maintainer: Debian QA Group <[email protected]> Changed-By: Adam Borowski <[email protected]> Description: ctwm - Claude's Tab window manager Closes: 367356 585693 649671 662860 817322 817416 Changes: ctwm (3.7-4) unstable; urgency=medium . * QA upload. * Orphan the package. * Source format 3.0 (quilt). * Debhelper compat 9; closes: #817322, #817416. * Drop readme.vms; closes: #367356. * Fix a segfault on workspace switch; closes: #662860. * Don't ignore errors from make. * Drop vim droppings from the end of the changelog. * Fix a crash on showing the windowlist; closes: #649671. * Pick an upstream fix for workspace manager drag; closes: #585693. Checksums-Sha1: c4e6b750923b4356f13db7d87c7e0d8a38e025ec 1418 ctwm_3.7-4.dsc 92e7848c2c05141eed1fd1cb4fab8e0a70b0c874 20704 ctwm_3.7-4.debian.tar.xz Checksums-Sha256: 12fbc2872141c28ef7b376929e7c8ed99942a37902cb1621f0efcb424e21b684 1418 ctwm_3.7-4.dsc ae64dfca067186efb41ba1129ff8e25f172f55cc2528eba350ba8d3b49ac9cca 20704 ctwm_3.7-4.debian.tar.xz Files: 7e459da25ec1093c8b0a88c927846fe3 1418 x11 optional ctwm_3.7-4.dsc d25ed6f2a0e18ea6e1f31bcce0221aad 20704 x11 optional ctwm_3.7-4.debian.tar.xz -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJXovEtAAoJECw7Q2/qxoEBHwIIAKWzNzJaGSaVdzygazSo/AaS R1nfPa7nawZH3buhsXmuiQTZWCTr0/iMDMWGNO4uM3QnD3XzwadFNxHPHi029kOM 1hPdRY/H8NhAwQ63Tf9aM/w3tYF0n4ShaOwa9TWO3geZCEfiuiekdY5rxtKyaP9i XT8mz+q7CQ58b43slubrSsa9Ql3VC0MC0Yb+99yCTww06JZwvU82lvaT+feaCZS1 /8eM09eh46cUU57Fcp786cePuvJuauyb70hdhWBPJEi0SiAAGk1g3hjRyadLbRbB wgyqg4osoE90KHMNcXsXebE/k2fQBx94Bjg8uey2/606zHEP8bZE6l4HQoQD+HA= =52M7 -----END PGP SIGNATURE-----
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