[0/2] drm/amd/display: Fix Null Pointer Dereference Issues

Message

Zicheng Qu Nov. 5, 2024, 2:01 p.m. UTC

Hi all,

I am submitting two patches to fix null pointer dereference issues in
the AMD display driver.

1. Patch 1/2 (Fixes: 8e4ed3cf1642): Add null checks in
dcn20_program_pipe() to prevent potential crashes when accessing
plane_state.

2. Patch 2/2 (Fixes: 0baae6246307): Ensures pipe_ctx->plane_state is
checked in hwss_setup_dpp() to improve function stability.

Thanks for reviewing!

Zicheng Qu (2):
  drm/amd/display: Fix null check for pipe_ctx->plane_state in
    dcn20_program_pipe
  drm/amd/display: Fix null check for pipe_ctx->plane_state in
    hwss_setup_dpp

 drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c   | 3 +++
 drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c | 6 +++---
 2 files changed, 6 insertions(+), 3 deletions(-)

Comments

Zicheng Qu Nov. 10, 2024, 7:26 a.m. UTC | #1

Hi,

Gentle ping.

The patch link is: [PATCH 0/2] drm/amd/display: Fix Null Pointer 
Dereference Issues - Zicheng Qu (kernel.org) 
<https://lore.kernel.org/linux-kernel/[e-mail]/>


Best regards,
Zicheng


On 2024/11/5 22:01, Zicheng Qu wrote:
> Hi all,
>
> I am submitting two patches to fix null pointer dereference issues in
> the AMD display driver.
>
> 1. Patch 1/2 (Fixes: 8e4ed3cf1642): Add null checks in
> dcn20_program_pipe() to prevent potential crashes when accessing
> plane_state.
>
> 2. Patch 2/2 (Fixes: 0baae6246307): Ensures pipe_ctx->plane_state is
> checked in hwss_setup_dpp() to improve function stability.
>
> Thanks for reviewing!
>
> Zicheng Qu (2):
>    drm/amd/display: Fix null check for pipe_ctx->plane_state in
>      dcn20_program_pipe
>    drm/amd/display: Fix null check for pipe_ctx->plane_state in
>      hwss_setup_dpp
>
>   drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c   | 3 +++
>   drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c | 6 +++---
>   2 files changed, 6 insertions(+), 3 deletions(-)
>