diff options
| author | Ma Ke <make24@iscas.ac.cn> | 2024-06-25 11:18:28 +0300 |
|---|---|---|
| committer | Lyude Paul <lyude@redhat.com> | 2024-06-25 22:30:50 +0300 |
| commit | 66edf3fb331b6c55439b10f9862987b0916b3726 (patch) | |
| tree | a96f6defd3109354dc3eaeb3d66a491e556cbdeb /drivers/gpu | |
| parent | 6d411c8ccc0137a612e0044489030a194ff5c843 (diff) | |
| download | linux-66edf3fb331b6c55439b10f9862987b0916b3726.tar.xz | |
drm/nouveau/dispnv04: fix null pointer dereference in nv17_tv_get_ld_modes
In nv17_tv_get_ld_modes(), the return value of drm_mode_duplicate() is
assigned to mode, which will lead to a possible NULL pointer dereference
on failure of drm_mode_duplicate(). Add a check to avoid npd.
Cc: stable@vger.kernel.org
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240625081828.2620794-1-make24@iscas.ac.cn
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/nouveau/dispnv04/tvnv17.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c b/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c index 9c3dc9a5bb46..2033214c4b78 100644 --- a/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c +++ b/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c @@ -209,6 +209,8 @@ static int nv17_tv_get_ld_modes(struct drm_encoder *encoder, struct drm_display_mode *mode; mode = drm_mode_duplicate(encoder->dev, tv_mode); + if (!mode) + continue; mode->clock = tv_norm->tv_enc_mode.vrefresh * mode->htotal / 1000 * |