[Pkg-xfce-devel] Bug#478566: thunar: thunar runs amok on /proc, wasting lots of CPU time

Hilko Bengen bengen at debian.org
Tue Apr 29 19:36:51 UTC 2008


Package: thunar
Version: 0.9.0-7
Severity: grave

While moving a few empty files from my home directory to the trash, I
noticed that thunar became unresponsive to user input and didn't even
redraw its window.

Attaching strace to the process revealed the following:

        access("/proc/net/packet", X_OK)        = -1 EACCES (Permission denied)
        lstat64("/proc/net/igmp6", {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
        access("/proc/net/igmp6", R_OK)         = 0
        open("/proc/net/igmp6", O_RDONLY|O_LARGEFILE) = 11
        fgetxattr(11, "user.mime_type", 0x0, 0) = -1 EOPNOTSUPP (Operation not supported)
        fstat64(11, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
        read(11, "", 0)                         = 0
        close(11)                               = 0
        access("/proc/net/igmp6", X_OK)         = -1 EACCES (Permission denied)
        lstat64("/proc/net/mcfilter6", {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
        access("/proc/net/mcfilter6", R_OK)     = 0
        open("/proc/net/mcfilter6", O_RDONLY|O_LARGEFILE) = 11
        fgetxattr(11, "user.mime_type", 0x0, 0) = -1 EOPNOTSUPP (Operation not supported)
        fstat64(11, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
        read(11, "", 0)                         = 0
        close(11)                               = 0
        access("/proc/net/mcfilter6", X_OK)     = -1 EACCES (Permission denied)
        lstat64("/proc/net/raw6", {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
        access("/proc/net/raw6", R_OK)          = 0
        open("/proc/net/raw6", O_RDONLY|O_LARGEFILE) = 11
        fgetxattr(11, "user.mime_type", 0x0, 0) = -1 EOPNOTSUPP (Operation not supported)
        fstat64(11, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
        read(11, "", 0)                         = 0
        close(11)                               = 0
        access("/proc/net/raw6", X_OK)          = -1 EACCES (Permission denied)
        lstat64("/proc/net/tcp6", {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
        access("/proc/net/tcp6", R_OK)          = 0
        open("/proc/net/tcp6", O_RDONLY|O_LARGEFILE) = 11
        fgetxattr(11, "user.mime_type", 0x0, 0) = -1 EOPNOTSUPP (Operation not supported)
        fstat64(11, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
        read(11, "", 0)                         = 0
        close(11)                               = 0

[ad nauseam]

Apparently, thunar crawled /proc in a futile attempt to fetch that
"user.mime_type" attribute from every "file" it finds there. Because
thunar becomes unresponsive for lengthy periods of time, it becomes
quite unresponsive.

-Hilko

-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 2.6.24-ataraxia (PREEMPT)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages thunar depends on:
ii  desktop-file-utils          0.15-1       Utilities for .desktop files
ii  libatk1.0-0                 1.22.0-1     The ATK accessibility toolkit
ii  libc6                       2.7-10       GNU C Library: Shared libraries
ii  libcairo2                   1.6.4-1+b1   The Cairo 2D vector graphics libra
ii  libdbus-1-3                 1.2.1-2      simple interprocess messaging syst
ii  libdbus-glib-1-2            0.74-2       simple interprocess messaging syst
ii  libexo-0.3-0                0.3.4-5      Library with extensions for Xfce
ii  libfreetype6                2.3.5-1+b1   FreeType 2 font engine, shared lib
ii  libglib2.0-0                2.16.3-2     The GLib library of C routines
ii  libgtk2.0-0                 2.12.9-3     The GTK+ graphical user interface 
ii  libice6                     2:1.0.4-1    X11 Inter-Client Exchange library
ii  libpango1.0-0               1.20.2-2     Layout and rendering of internatio
ii  libsm6                      2:1.0.3-1+b1 X11 Session Management library
ii  libthunar-vfs-1-2           0.9.0-7      VFS abstraction used in thunar
ii  libx11-6                    2:1.0.3-7    X11 client-side library
ii  libxfce4util4               4.4.2-2      Utility functions library for Xfce
ii  shared-mime-info            0.23-5       FreeDesktop.org shared MIME databa
ii  thunar-data                 0.9.0-7      Provides thunar documentation, ico

Versions of packages thunar recommends:
ii  dbus                        1.2.1-2      simple interprocess messaging syst
ii  gamin                       0.1.9-2      File and directory monitoring syst
ii  hal                         0.5.11~rc2-1 Hardware Abstraction Layer
ii  xfce4-panel                 4.4.2-4      The Xfce4 desktop environment pane

-- no debconf information





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