Re: [PATCH 03/10] drm/msm: fix NULL-deref on snapshot tear down

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 06/03/2023 12:07, Johan Hovold wrote:
In case of early initialisation errors and on platforms that do not use
the DPU controller, the deinitilisation code can be called with the kms
pointer set to NULL.

Fixes: 98659487b845 ("drm/msm: add support to take dpu snapshot")
Cc: stable@xxxxxxxxxxxxxxx      # 5.14
Cc: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx>

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>

---
  drivers/gpu/drm/msm/msm_drv.c | 3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 9ded384acba4..17a59d73fe01 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -242,7 +242,8 @@ static int msm_drm_uninit(struct device *dev)
  		msm_fbdev_free(ddev);
  #endif
- msm_disp_snapshot_destroy(ddev);
+	if (kms)
+		msm_disp_snapshot_destroy(ddev);
drm_mode_config_cleanup(ddev);

--
With best wishes
Dmitry




[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [Linux for Sparc]     [IETF Annouce]     [Security]     [Bugtraq]     [Linux MIPS]     [ECOS]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux