From: Jiasheng Jiang <jiasheng@xxxxxxxxxxx> [ Upstream commit 115906ca7b535afb1fe7b5406c566ccd3873f82b ] Add check for the return value of alloc_ordered_workqueue as it may return NULL pointer and cause NULL pointer dereference. Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx> Reviewed-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx> Patchwork: https://patchwork.freedesktop.org/patch/517646/ Link: https://lore.kernel.org/r/20230110021651.12770-1-jiasheng@xxxxxxxxxxx Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/gpu/drm/msm/dsi/dsi_host.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index 51e8318cc8ff4..5a76aa1389173 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -1913,6 +1913,9 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi) /* setup workqueue */ msm_host->workqueue = alloc_ordered_workqueue("dsi_drm_work", 0); + if (!msm_host->workqueue) + return -ENOMEM; + INIT_WORK(&msm_host->err_work, dsi_err_worker); INIT_WORK(&msm_host->hpd_work, dsi_hpd_worker); -- 2.39.0
