Messages in this thread | | | Date | Tue, 31 May 2022 10:51:55 -0700 | Subject | Re: [PATCH] drm/msm/dpu: Fix pointer dereferenced before checking | From | Abhinav Kumar <> |
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On 5/29/2022 7:19 PM, Haowen Bai wrote: > The phys_enc->wb_idx is dereferencing before null checking, so move > it after checking. > > Signed-off-by: Haowen Bai <baihaowen@meizu.com>
Fixes: d7d0e73f7de33 ("drm/msm/dpu: introduce the dpu_encoder_phys_* for writeback")
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
> --- > drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c > index 4829d1ce0cf8..59da348ff339 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c > @@ -574,11 +574,11 @@ static void dpu_encoder_phys_wb_disable(struct dpu_encoder_phys *phys_enc) > */ > static void dpu_encoder_phys_wb_destroy(struct dpu_encoder_phys *phys_enc) > { > - DPU_DEBUG("[wb:%d]\n", phys_enc->wb_idx - WB_0); > - > if (!phys_enc) > return; > > + DPU_DEBUG("[wb:%d]\n", phys_enc->wb_idx - WB_0); > + > kfree(phys_enc); > } >
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