npplayer doesn't work

[davidben]

Or at least, I haven't been able to get it to work, so I've avoided updating its NPAPI thunks. It also has a free bug when passing --plugin.

% ./npplayer --plugin
*** glibc detected *** ./npplayer: free(): invalid pointer: 0x00000000009fdae8 ***
======= Backtrace: =========
/lib/libc.so.6(+0x774b6)[0x7fdf798634b6]
/lib/libc.so.6(cfree+0x73)[0x7fdf79869c83]
/lib/libglib-2.0.so.0(g_get_charset+0x99)[0x7fdf7a5ec119]
/lib/libglib-2.0.so.0(g_log_default_handler+0x1c6)[0x7fdf7a5c4736]
/lib/libglib-2.0.so.0(g_logv+0x1b9)[0x7fdf7a5c4b89]
/lib/libglib-2.0.so.0(g_log+0x83)[0x7fdf7a5c4fa3]
./npplayer[0x4075a8]
/lib/libglib-2.0.so.0(+0x40b1b)[0x7fdf7a5bab1b]
/lib/libglib-2.0.so.0(g_main_context_dispatch+0x1f2)[0x7fdf7a5ba342]
/lib/libglib-2.0.so.0(+0x442a8)[0x7fdf7a5be2a8]
/lib/libglib-2.0.so.0(g_main_loop_run+0x195)[0x7fdf7a5be7b5]
/usr/lib/libgtk-x11-2.0.so.0(gtk_main+0xa7)[0x7fdf7b2943e7]
./npplayer[0x408855]
/lib/libc.so.6(__libc_start_main+0xfe)[0x7fdf7980ad8e]
./npplayer[0x404ec9]
======= Memory map: ========
00400000-00413000 r-xp 00000000 08:05 2371977                            /home/davidben/proj/nspluginwrapper/npplayer
00612000-00613000 r--p 00012000 08:05 2371977                            /home/davidben/proj/nspluginwrapper/npplayer
00613000-00614000 rw-p 00013000 08:05 2371977                            /home/davidben/proj/nspluginwrapper/npplayer
00614000-00615000 rw-p 00000000 00:00 0 
00913000-00a1b000 rw-p 00000000 00:00 0                                  [heap]
7fdf64000000-7fdf64021000 rw-p 00000000 00:00 0 
7fdf64021000-7fdf68000000 ---p 00000000 00:00 0 
7fdf6b728000-7fdf6b746000 r-xp 00000000 08:05 6187400                    /home/davidben/.mozilla/plugins/npwrapper.libflashplayer.so
7fdf6b746000-7fdf6b946000 ---p 0001e000 08:05 6187400                    /home/davidben/.mozilla/plugins/npwrapper.libflashplayer.so
7fdf6b946000-7fdf6b947000 r--p 0001e000 08:05 6187400                    /home/davidben/.mozilla/plugins/npwrapper.libflashplayer.so
7fdf6b947000-7fdf6b948000 rw-p 0001f000 08:05 6187400                    /home/davidben/.mozilla/plugins/npwrapper.libflashplayer.so
7fdf6b948000-7fdf6b966000 r-xp 00000000 08:05 6189490                    /home/davidben/.mozilla/plugins/npwrapper.libtest-plugin.so
7fdf6b966000-7fdf6bb66000 ---p 0001e000 08:05 6189490                    /home/davidben/.mozilla/plugins/npwrapper.libtest-plugin.so
7fdf6bb66000-7fdf6bb67000 r--p 0001e000 08:05 6189490                    /home/davidben/.mozilla/plugins/npwrapper.libtest-plugin.so
7fdf6bb67000-7fdf6bb68000 rw-p 0001f000 08:05 6189490                    /home/davidben/.mozilla/plugins/npwrapper.libtest-plugin.so
7fdf6bb68000-7fdf6bb83000 r-xp 00000000 08:05 1442598                    /var/lib/flashplugin-installer/npwrapper.libflashplayer.so
7fdf6bb83000-7fdf6bd83000 ---p 0001b000 08:05 1442598                    /var/lib/flashplugin-installer/npwrapper.libflashplayer.so
7fdf6bd83000-7fdf6bd84000 r--p 0001b000 08:05 1442598                    /var/lib/flashplugin-installer/npwrapper.libflashplayer.so
7fdf6bd84000-7fdf6bd85000 rw-p 0001c000 08:05 1442598                    /var/lib/flashplugin-installer/npwrapper.libflashplayer.so
7fdf6bd85000-7fdf6bde2000 r-xp 00000000 08:05 7733344                    /opt/google/talkplugin/libnpgoogletalk64.so
7fdf6bde2000-7fdf6bfe2000 ---p 0005d000 08:05 7733344                    /opt/google/talkplugin/libnpgoogletalk64.so
7fdf6bfe2000-7fdf6bfe6000 rw-p 0005d000 08:05 7733344                    /opt/google/talkplugin/libnpgoogletalk64.so
7fdf6bfe6000-7fdf6c02a000 r-xp 00000000 08:05 3123                       /usr/lib/libQtXml.so.4.7.0
7fdf6c02a000-7fdf6c22a000 ---p 00044000 08:05 3123                       /usr/lib/libQtXml.so.4.7.0
7fdf6c22a000-7fdf6c22c000 r--p 00044000 08:05 3123                       /usr/lib/libQtXml.so.4.7.0
7fdf6c22c000-7fdf6c22d000 rw-p 00046000 08:05 3123                       /usr/lib/libQtXml.so.4.7.0
7fdf6c22d000-7fdf6c245000 r-xp 00000000 08:05 2730                       /usr/lib/libaudio.so.2.4
7fdf6c245000-7fdf6c444000 ---p 00018000 08:05 2730                       /usr/lib/libaudio.so.2.4
7fdf6c444000-7fdf6c445000 r--p 00017000 08:05 2730                       /usr/lib/libaudio.so.2.4
7fdf6c445000-7fdf6c446000 rw-p 00018000 08:05 2730                       /usr/lib/libaudio.so.2.4
7fdf6c446000-7fdf6c4bf000 r-xp 00000000 08:05 3221                       /usr/lib/libQtDBus.so.4.7.0
7fdf6c4bf000-7fdf6c6bf000 ---p 00079000 08:05 3221                       /usr/lib/libQtDBus.so.4.7.0
7fdf6c6bf000-7fdf6c6c0000 r--p 00079000 08:05 3221                       /usr/lib/libQtDBus.so.4.7.0
7fdf6c6c0000-7fdf6c6c1000 rw-p 0007a000 08:05 3221                       /usr/lib/libQtDBus.so.4.7.0
7fdf6c6c1000-7fdf6d160000 r-xp 00000000 08:05 709                        /usr/lib/libQtGui.so.4.7.0
7fdf6d160000-7fdf6d35f000 ---p 00a9f000 08:05 709                        /usr/lib/libQtGui.so.4.7.0
7fdf6d35f000-7fdf6d3a0000 r--p 00a9e000 08:05 709                        /usr/lib/libQtGui.so.4.7.0
7fdf6d3a0000-7fdf6d3a6000 rw-p 00adf000 08:05 709                        /usr/lib/libQtGui.so.4.7.0
7fdf6d3a6000-7fdf6d3a9000 rw-p 00000000 00:00 0 
7fdf6d3a9000-7fdf6d638000 r-xp 00000000 08:05 4023                       /usr/lib/libQtCore.so.4.7.0
7fdf6d638000-7fdf6d838000 ---p 0028f000 08:05 4023                       /usr/lib/libQtCore.so.4.7.0
7fdf6d838000-7fdf6d843000 r--p 0028f000 08:05 4023                       /usr/lib/libQtCore.so.4.7.0
7fdf6d843000-7fdf6d844000 rw-p 0029a000 08:05 4023                       /usr/lib/libQtCore.so.4.7.0
7fdf6d844000-7fdf6d845000 rw-p 00000000 00:00 0 
7fdf6d845000-7fdf6d856000 r-xp 00000000 08:05 133962                     /usr/lib/mozilla/plugins/skypebuttons.so
7fdf6d856000-7fdf6da55000 ---p 00011000 08:05 133962                     /usr/lib/mozilla/plugins/skypebuttons.so
7fdf6da55000-7fdf6da56000 r--p 00010000 08:05 133962                     /usr/lib/mozilla/plugins/skypebuttons.so
7fdf6da56000-7fdf6da57000 rw-p 00011000 08:05 133962                     /usr/lib/mozilla/plugins/skypebuttons.so
7fdf6da57000-7fdf6da58000 r-xp 00000000 08:05 133934                     /usr/lib/mozilla/plugins/librhythmbox-itms-detection-plugin.so
7fdf6da58000-7fdf6dc57000 ---p 00001000 08:05 133934                     /usr/lib/mozilla/plugins/librhythmbox-itms-detection-plugin.sozsh: abort      ./npplayer --plugin

[davidben]

valgrind says the address glib is trying to free was allocated by the Google Talk plugin. It's trying to free some structure that, in glib, pointed to by thread-local storage. Is it possible they're stomping on each other somehow?

[davidben]

Someone's stomping on the thread-local storage used to store the pointer to the glib thread structure. g_thread_self keeps changing as we dlopen modules, so presumably it's stuff in the _init of those modules. Both /usr/lib/mozilla/plugins/libnpgoogletalk64.so and /usr/lib/mozilla/plugins/skypebuttons.so seem to be causing problems.

[davidben]

Actually, this appears to be skypebuttons.so's fault. While on its own it doesn't cause the crash, it does mess up g_thread_self.

[davidben]

Qt's fault. Caused by this bug.

http://bugreports.qt.nokia.com/browse/QTBUG-10861

[davidben]

Don't unload plugins from the process

Unfortunately, some libraries are broken and corrupt internal state when
they are unloaded. Closed by 0ff78b2.