Re: [OE-core] [meta-xfce][master][PATCH] tumbler: fix segfault on startup when built without any plugins

[Peng Zhang <peng.zhang1.cn@windriver.com>]

Sorry for the noise. This patch was sent to the wrong mailing list.
I have resent it to openembedded-devel.

Please ignore this one.

On 2/26/26 14:44, Zhang, Peng (Paul) (CN) via lists.openembedded.org wrote:
> From: Zhang Peng <peng.zhang1.cn@windriver.com>
>
> tumbler default build without any plugins. In this situation, when
> xfce desktop startup, tumblerd will segfault as following:
>
> ```
> tumblerd[1138]: segfault at 30 ip 00007fc5dc169fb0 sp 00007ffd03ee3be8 error 4 in libglib-2.0.so.0.8600.3
> [aefb0,7fc5dc0da000+a0000] likely on CPU 2 (core 4, socket 0)
> ```
> Backport upstream fix to handle cases where there are no plugins gracefully
>
> Signed-off-by: Zhang Peng <peng.zhang1.cn@windriver.com>
> ---
>   ...here-there-are-no-plugins-gracefully.patch | 58 +++++++++++++++++++
>   .../recipes-xfce/tumbler/tumbler_4.20.1.bb    |  1 +
>   2 files changed, 59 insertions(+)
>   create mode 100644 meta-xfce/recipes-xfce/tumbler/files/0001-Handle-cases-where-there-are-no-plugins-gracefully.patch
>
> diff --git a/meta-xfce/recipes-xfce/tumbler/files/0001-Handle-cases-where-there-are-no-plugins-gracefully.patch b/meta-xfce/recipes-xfce/tumbler/files/0001-Handle-cases-where-there-are-no-plugins-gracefully.patch
> new file mode 100644
> index 0000000000..a4e60f998a
> --- /dev/null
> +++ b/meta-xfce/recipes-xfce/tumbler/files/0001-Handle-cases-where-there-are-no-plugins-gracefully.patch
> @@ -0,0 +1,58 @@
> +From 95244ee0d1f3184e2c2cae9d33095dc03829b10e Mon Sep 17 00:00:00 2001
> +From: =?UTF-8?q?Ga=C3=ABl=20Bonithon?= <gael@xfce.org>
> +Date: Fri, 20 Feb 2026 17:07:56 +0100
> +Subject: [PATCH] Handle cases where there are no plugins gracefully
> +
> +Not sure it makes much sense to allow the cache plugin not to be built,
> +but then again, why not? It could be replaced by a customized
> +implementation, and it has always been possible not to build it, so we
> +might as well leave it as it is.
> +
> +Fixes: #109
> +(cherry picked from commit b4f4db4bfc1a45f0a405c4516e38394a44c90fcf)
> +
> +Upstream-Status: Backport [https://gitlab.xfce.org/xfce/tumbler/-/commit/95244ee0d1f3184e2c2cae9d33095dc03829b10e]
> +
> +Signed-off-by: Zhang Peng <peng.zhang1.cn@windriver.com>
> +---
> + tumbler/tumbler-cache-plugin.c | 5 ++++-
> + tumblerd/tumbler-registry.c    | 7 ++++++-
> + 2 files changed, 10 insertions(+), 2 deletions(-)
> +
> +diff --git a/tumbler/tumbler-cache-plugin.c b/tumbler/tumbler-cache-plugin.c
> +index 50700a3..e308638 100644
> +--- a/tumbler/tumbler-cache-plugin.c
> ++++ b/tumbler/tumbler-cache-plugin.c
> +@@ -188,7 +188,10 @@ tumbler_cache_plugin_get_default (void)
> +       g_object_add_weak_pointer (G_OBJECT (plugin), (gpointer) &plugin);
> +
> +       if (!g_type_module_use (G_TYPE_MODULE (plugin)))
> +-        return NULL;
> ++        {
> ++          g_object_unref (plugin);
> ++          return NULL;
> ++        }
> +     }
> +
> +   return G_TYPE_MODULE (plugin);
> +diff --git a/tumblerd/tumbler-registry.c b/tumblerd/tumbler-registry.c
> +index 705dbc9..b58e831 100644
> +--- a/tumblerd/tumbler-registry.c
> ++++ b/tumblerd/tumbler-registry.c
> +@@ -534,7 +534,12 @@ tumbler_registry_update_supported (TumblerRegistry *registry)
> +
> +   /* abort if there are no thumbnailers */
> +   if (thumbnailers == NULL)
> +-    return;
> ++    {
> ++      /* we need NULL-terminated arrays for the _get_supported() dbus call anyway */
> ++      registry->uri_schemes = g_new0 (gchar *, 1);
> ++      registry->mime_types = g_new0 (gchar *, 1);
> ++      return;
> ++    }
> +
> +   /* clear visited flag of all thumbnailers */
> +   for (lp = thumbnailers; lp != NULL; lp = lp->next)
> +--
> +2.50.0
> +
> diff --git a/meta-xfce/recipes-xfce/tumbler/tumbler_4.20.1.bb b/meta-xfce/recipes-xfce/tumbler/tumbler_4.20.1.bb
> index 7a01882d57..3cbc43fc20 100644
> --- a/meta-xfce/recipes-xfce/tumbler/tumbler_4.20.1.bb
> +++ b/meta-xfce/recipes-xfce/tumbler/tumbler_4.20.1.bb
> @@ -7,6 +7,7 @@ DEPENDS = "xfce4-dev-tools-native libxfce4util"
>   
>   inherit xfce gtk-doc systemd
>   
> +SRC_URI += " file://0001-Handle-cases-where-there-are-no-plugins-gracefully.patch"
>   SRC_URI[sha256sum] = "87b90df8f30144a292d70889e710c8619d8b8803f0e1db3280a4293367a42eae"
>   
>   INSANE_SKIP:${PN} = "dev-so"
>
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