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| author | Jiasheng Jiang <jiasheng@iscas.ac.cn> | 2021-12-14 13:08:37 +0300 |
|---|---|---|
| committer | Liviu Dudau <liviu.dudau@arm.com> | 2022-04-11 20:30:18 +0300 |
| commit | 73c3ed7495c67b8fbdc31cf58e6ca8757df31a33 (patch) | |
| tree | 88d054672783c9a7fa1e64b33cbcc0bc11a70659 /drivers/gpu/drm/arm | |
| parent | b5c7d19736a17115f0c3489a2ebfa5c5181902b9 (diff) | |
| download | linux-73c3ed7495c67b8fbdc31cf58e6ca8757df31a33.tar.xz | |
drm: mali-dp: potential dereference of null pointer
The return value of kzalloc() needs to be checked.
To avoid use of null pointer '&state->base' in case of the
failure of alloc.
Fixes: 99665d072183 ("drm: mali-dp: add malidp_crtc_state struct")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: Brian Starkey <brian.starkey@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211214100837.46912-1-jiasheng@iscas.ac.cn
Diffstat (limited to 'drivers/gpu/drm/arm')
| -rw-r--r-- | drivers/gpu/drm/arm/malidp_crtc.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/arm/malidp_crtc.c b/drivers/gpu/drm/arm/malidp_crtc.c index 494075ddbef6..b5928b52e279 100644 --- a/drivers/gpu/drm/arm/malidp_crtc.c +++ b/drivers/gpu/drm/arm/malidp_crtc.c @@ -487,7 +487,10 @@ static void malidp_crtc_reset(struct drm_crtc *crtc) if (crtc->state) malidp_crtc_destroy_state(crtc, crtc->state); - __drm_atomic_helper_crtc_reset(crtc, &state->base); + if (state) + __drm_atomic_helper_crtc_reset(crtc, &state->base); + else + __drm_atomic_helper_crtc_reset(crtc, NULL); } static int malidp_crtc_enable_vblank(struct drm_crtc *crtc) |