[Pkg-xfce-devel] Bug#747340: Bug#747340: xfce4-taskmanager freezes on armhf architecture

[Moritz Strohm]

I have built xfce4-taskmanager from source and ran the self-build
xfce4-taskmanager with gdb (and the debug symbols).
When I do a backtrace in gdb after xfce4-taskmanager has frozen I got
more output from gdb than before:

#0  0xb682362c in read () from /lib/arm-linux-gnueabihf/libc.so.6
#1  0xb67eb66c in _IO_file_underflow () from
/lib/arm-linux-gnueabihf/libc.so.6
#2  0xb67ec1f8 in _IO_default_uflow () from
/lib/arm-linux-gnueabihf/libc.so.6
#3  0xb67ec118 in __uflow () from /lib/arm-linux-gnueabihf/libc.so.6
#4  0xb67e6148 in getc () from /lib/arm-linux-gnueabihf/libc.so.6
#5  0x00013454 in get_task_cmdline (task=0xbeffe108)
    at task-manager-linux.c:138
#6  get_task_details (task=0xbeffe108, pid=<optimized out>)
    at task-manager-linux.c:291
#7  get_task_list (task_list=0x1484e0) at task-manager-linux.c:312
#8  0x00011c84 in xtm_task_manager_update_model (manager=0x77da0)
    at task-manager.c:473
#9  0x0000dabc in init_timeout () at main.c:117
#10 0xb68d3ad8 in ?? () from /lib/arm-linux-gnueabihf/libglib-2.0.so.0
#11 0xb68d3ad8 in ?? () from /lib/arm-linux-gnueabihf/libglib-2.0.so.0
Backtrace stopped: previous frame identical to this frame (corrupt stack?)



I have analysed the problem a bit more:

xfce4-taskmanager iterates continuously over all available PIDs, as it
is supposed to. I found out by adding the following line before the
for-loop at line 138 in task-manager-linux.c:
fprintf(stderr, "task->pid=%d\n", task->pid);


The main window of xfce4-taskmanager was refreshed once after some
amount of time (~10 seconds). The GUI was like frozen for the rest of
the time while xfce4-taskmanager continues to iterate over all PIDs.

I think that there is a problem with the GUI or some components from it
since the core functionality of xfce4-taskmanager seems to work.



On 07. mai 2014 20:32, Yves-Alexis Perez wrote:
> 
> It might help to check what is the 7 fd.
> 

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