This is a note to let you know that I've just added the patch titled drm/dp/mst: Always clear proposed vcpi table for port. to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-dp-mst-always-clear-proposed-vcpi-table-for-port.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From fd2d2bac6e79b0be91ab86a6075a0c46ffda658a Mon Sep 17 00:00:00 2001 From: Andrey Grodzovsky <Andrey.Grodzovsky@xxxxxxx> Date: Wed, 25 May 2016 16:45:43 -0400 Subject: drm/dp/mst: Always clear proposed vcpi table for port. From: Andrey Grodzovsky <Andrey.Grodzovsky@xxxxxxx> commit fd2d2bac6e79b0be91ab86a6075a0c46ffda658a upstream. Not clearing mst manager's proposed vcpis table for destroyed connectors when the manager is stopped leaves it pointing to unrefernced memory, this causes pagefault when the manager is restarted when plugging back a branch. Fixes: 91a25e463130 ("drm/dp/mst: deallocate payload on port destruction") Signed-off-by: Andrey Grodzovsky <Andrey.Grodzovsky@xxxxxxx> Reviewed-by: Lyude <cpaul@xxxxxxxxxx> Cc: Mykola Lysenko <Mykola.Lysenko@xxxxxxx> Cc: Alex Deucher <alexander.deucher@xxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/drm_dp_mst_topology.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -2874,11 +2874,9 @@ static void drm_dp_destroy_connector_wor drm_dp_port_teardown_pdt(port, port->pdt); if (!port->input && port->vcpi.vcpi > 0) { - if (mgr->mst_state) { - drm_dp_mst_reset_vcpi_slots(mgr, port); - drm_dp_update_payload_part1(mgr); - drm_dp_mst_put_payload_id(mgr, port->vcpi.vcpi); - } + drm_dp_mst_reset_vcpi_slots(mgr, port); + drm_dp_update_payload_part1(mgr); + drm_dp_mst_put_payload_id(mgr, port->vcpi.vcpi); } kref_put(&port->kref, drm_dp_free_mst_port); Patches currently in stable-queue which might be from Andrey.Grodzovsky@xxxxxxx are queue-4.4/drm-dp-mst-always-clear-proposed-vcpi-table-for-port.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html