#990 Crash when trying to access 'Sound & Video' in menu

[Andreas E]

Lubuntu Xenial here, still LXDE (thank goodness).
Messed up something in my start menu, hence I have to use PcManFM to access my menu manually. (it's not that tragic)

menu://applications/

Once I try to access 'Sound & Video' sub-folder, PcManFM closes.
Though I personally call it a crash, there was nothing in gdb even though I installed pcmanfm-dbg.

That the structure of my menu is not at fault can be proved by pcmanfm-qt, because in the Qt version it works without problems even with said folder.

[Lonely Stranger]

Thank you very much for reporting this. How do you run PCManFM, is it using gdb? Does it exit once you enter said folder? Could you read, please, Wiki page http://wiki.lxde.org/en/LXDE:PCManFM_build_and_setup_guide#Bug_Reporting_and_How_to_Help_Debug_PCManFM and give some more details to reproduce your issue?

[Andreas E]

How do you run PCManFM, is it using gdb?

• Right.

Does it exit once you enter said folder?

• Exactly.

gdb pcmanfm, then it loaded debug symbols and once I launched run, I accessed "Sound & Video" folder and main window auto-closed, seemingly exiting gracefully.
There was nothing notorious like SIGSEGV or anything of that sort.
bt full didn't return anything either - that is what was so peculiar!

(Update) But now debugging works!

This time I was able to get some BT and also some possibly very useful error message:

pcmanfm: ../../../../src/cairo-surface.c:928: cairo_surface_reference: Assertion `(_cairo_atomic_int_get (&(&surface->ref_count)->ref_count) > 0)' failed.

Program received signal SIGABRT, Aborted.
0xb7fdbbe8 in __kernel_vsyscall ()

MORE: http://pastebin.com/mUDKg56J

(warning: very long)

This is on version 1.2.3-1.1.

[Lonely Stranger]

This is very much interesting case. It appears something went wrong in librsvg, it would be good to debug further but unfortunately neither your libfm-gtk nor libgtk-x11 have debug symbols installed in your system so further investigation isn't possible. Could you, please, install them and get your backtrace again? Thank you in advance!