[Xfce-bugs] [Bug 9709] periodic crashes of xfce4-session

[bugzilla-daemon at xfce.org]

https://bugzilla.xfce.org/show_bug.cgi?id=9709

--- Comment #20 from Natanael Copa <natanael.copa at gmail.com> ---
(In reply to comment #18)
> I can confirm the errors seen here, since I upgraded glib to 2.36.1. I've
> never encountered those problems with 2.34.x or earlier versions.

...

> ---
> GLib-WARNING **: GChildWatchSource: Exit status of a child process was
> requested but ECHILD was received by waitpid(). Most likely the process is
> ignoring SIGCHLD, or some other thread is invoking waitpid() with a
> nonpositive first argument; either behavior can break applications that use
> g_child_watch_add()/g_spawn_sync() either directly or indirectly.

I have a feeling that whatever causes this warning causes a memory corruption
or a double free. I could not find any reason to *why* this warning shows up so
I think something fishy here is going on.

I have the following suggestions to move forward on this:

1) fix the above ECHILD warning and see if problem still happens.

2) git bisect glib and find the exact glib commit that introduces this error.

A wild guess would be:
https://git.gnome.org/browse/glib/commit/glib/?id=ce0022933c255313e010b27f977f4ae02aad1e7e
(which seems to be partially reverted recently)

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