Re: nm-applet SIGSEGV

[Jirka Klimes <jklimes redhat com>]

On Tue, 1 Dec 2015 10:12:11 +0100
poma <pomidorabelisima gmail com> wrote:

> 你好
>
> network-manager-applet-1.2.0-0.9.20151119gitbc8a795.fc24.x86_64
>
> coredumpctl gdb:
>
>            PID: 1676 (nm-applet)
>         Signal: 11 (SEGV)
>   Command Line: nm-applet
>     Executable: /usr/bin/nm-applet
>        Message: Process 1676 (nm-applet) of user 1000 dumped core.
>                 
>                 Stack trace of thread 1676:
>                 #0  0x00007fb4349630bd
> g_type_check_instance_is_fundamentally_a (libgobject-2.0.so.0) #1
> 0x00007fb4349427e7 g_object_unref (libgobject-2.0.so.0) #2
> 0x0000558638143747 nma_clear_icon (/usr/bin/nm-applet (deleted)) #3
> 0x00005586381443be nma_icons_free (/usr/bin/nm-applet (deleted)) #4
> 0x00007fb43493d995 g_closure_invoke (libgobject-2.0.so.0) #5
> 0x00007fb434950511 signal_emit_unlocked_R (libgobject-2.0.so.0) #6
> 0x00007fb4349594c0 g_signal_emit_valist (libgobject-2.0.so.0) #7
> 0x00007fb43495988f g_signal_emit (libgobject-2.0.so.0) #8
> 0x00007fb4364f2de4 theme_changed_idle (libgtk-3.so.0) #9
> 0x00007fb43606f188 gdk_threads_dispatch (libgdk-3.so.0) #10
> 0x00007fb43443907a g_main_context_dispatch (libglib-2.0.so.0) #11
> 0x00007fb434439410 g_main_context_iterate.isra.29 (libglib-2.0.so.0)
> #12 0x00007fb434439732 g_main_loop_run (libglib-2.0.so.0) #13
> 0x000055863814358d main (/usr/bin/nm-applet (deleted)) #14
> 0x00007fb433e2b780 __libc_start_main (libc.so.6) #15
> 0x00005586381435e9 _start (/usr/bin/nm-applet (deleted))
>
> Core was generated by `nm-applet'.
> Program terminated with signal SIGSEGV, Segmentation fault.
>
> #2  0x0000558638143747 in nma_clear_icon (icon=0x558639673c68,
> applet=<optimized out>) at applet.c:3058 __FUNCTION__ =
> "nma_clear_icon" #3  0x00005586381443be in nma_icons_free
> (applet=<optimized out>) at applet.c:3068 i = 1
> #4  nma_icons_reload (applet=0x558639673b90) at applet.c:3113
>         error = 0x0
>         loader = <optimized out>
>         __FUNCTION__ = "nma_icons_reload"
>
> #9  0x00007fb4364f2de4 in theme_changed_idle (user_data=<optimized
> out>) at gtkicontheme.c:770 icon_theme = <optimized out>
>         priv = 0x558639673b20
> #10 0x00007fb43606f188 in gdk_threads_dispatch (data=0x55863972de40)
> at gdk.c:719 dispatch = 0x55863972de40
>         ret = 0
> #14 0x000055863814358d in main (argc=1, argv=0x7ffe943ebf48) at
> main.c:84 applet = 0x5586396630a0
>         i = <optimized out>
>
>
> How to reproduce,
> sometimes it's enough to re-log,
> sometimes intermediate step "xfwm4 --replace &" is involved.

Thanks for posting, it should be investigated. It might be related to
XFCE and icon themes. There is already a bug opened for Fedora:
https://bugzilla.redhat.com/show_bug.cgi?id=1279937

Anyway it would help if you could run
$ gdb /usr/bin/nm-applet
reproduce the crash and then looking around why *icon object is
incorrect in nma_clear_icon()

(gdb) print *icon

Jirka