2019-10-01 18:52:32

by Stotland, Inga

[permalink] [raw]
Subject: [PATCH BlueZ] mesh: Fix segmentation fault on Join() call

From: Inga Stotland <[email protected]>

This fixes the following segfault:

node_init_cb (node=0x0, agent=0x0) at mesh/mesh.c:359
reply = dbus_error(join_pending->msg, MESH_ERROR_FAILED,

user_data=0x5555555be170) at mesh/node.c:1760
dbus=<optimized out>) at ell/dbus.c:216
user_data=0x5555555a6e00) at ell/dbus.c:279
user_data=0x5555555a7ef0) at ell/io.c:126
at ell/main.c:642
at mesh/main.c:205

The fault was caused by the premature deletion of preserved state.

This moves setup of disconnect watch for the application calling the Join()
method into the node_init_cb(), after a temporary node has been
successfully created.
---
mesh/mesh.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/mesh/mesh.c b/mesh/mesh.c
index b660a7ef2..9b2b2073b 100644
--- a/mesh/mesh.c
+++ b/mesh/mesh.c
@@ -377,6 +377,11 @@ static void node_init_cb(struct mesh_node *node, struct mesh_agent *agent)
l_dbus_send(dbus_get_bus(), reply);
join_pending->msg = NULL;

+ /* Setup disconnect watch */
+ join_pending->disc_watch = l_dbus_add_disconnect_watch(dbus_get_bus(),
+ join_pending->sender,
+ prov_disc_cb, NULL, NULL);
+
return;

fail:
@@ -423,8 +428,6 @@ static struct l_dbus_message *join_network_call(struct l_dbus *dbus,
sender = l_dbus_message_get_sender(msg);

join_pending->sender = l_strdup(sender);
- join_pending->disc_watch = l_dbus_add_disconnect_watch(dbus, sender,
- prov_disc_cb, NULL, NULL);
join_pending->msg = l_dbus_message_ref(msg);
join_pending->app_path = app_path;

--
2.20.1


2019-10-05 16:17:45

by Gix, Brian

[permalink] [raw]
Subject: Re: [PATCH BlueZ] mesh: Fix segmentation fault on Join() call

Applied

On Tue, 2019-10-01 at 11:51 -0700, Inga Stotland wrote:
> From: Inga Stotland <[email protected]>
>
> This fixes the following segfault:
>
> node_init_cb (node=0x0, agent=0x0) at mesh/mesh.c:359
> reply = dbus_error(join_pending->msg, MESH_ERROR_FAILED,
>
> user_data=0x5555555be170) at mesh/node.c:1760
> dbus=<optimized out>) at ell/dbus.c:216
> user_data=0x5555555a6e00) at ell/dbus.c:279
> user_data=0x5555555a7ef0) at ell/io.c:126
> at ell/main.c:642
> at mesh/main.c:205
>
> The fault was caused by the premature deletion of preserved state.
>
> This moves setup of disconnect watch for the application calling the Join()
> method into the node_init_cb(), after a temporary node has been
> successfully created.
> ---
> mesh/mesh.c | 7 +++++--
> 1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/mesh/mesh.c b/mesh/mesh.c
> index b660a7ef2..9b2b2073b 100644
> --- a/mesh/mesh.c
> +++ b/mesh/mesh.c
> @@ -377,6 +377,11 @@ static void node_init_cb(struct mesh_node *node, struct mesh_agent *agent)
> l_dbus_send(dbus_get_bus(), reply);
> join_pending->msg = NULL;
>
> + /* Setup disconnect watch */
> + join_pending->disc_watch = l_dbus_add_disconnect_watch(dbus_get_bus(),
> + join_pending->sender,
> + prov_disc_cb, NULL, NULL);
> +
> return;
>
> fail:
> @@ -423,8 +428,6 @@ static struct l_dbus_message *join_network_call(struct l_dbus *dbus,
> sender = l_dbus_message_get_sender(msg);
>
> join_pending->sender = l_strdup(sender);
> - join_pending->disc_watch = l_dbus_add_disconnect_watch(dbus, sender,
> - prov_disc_cb, NULL, NULL);
> join_pending->msg = l_dbus_message_ref(msg);
> join_pending->app_path = app_path;
>