drm/msm/dpu: don't allow overriding data from catalog

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The data from catalog is marked as const, so it is a part of the RO
segment. Allowing userspace to write to it through debugfs can cause
protection faults. Set debugfs file mode to read-only for debug entries
corresponding to perf_cfg coming from catalog.

Fixes: abda0d925f ("drm/msm/dpu: Mark various data tables as const")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/582844/
Link: https://lore.kernel.org/r/20240314-dpu-perf-rework-v3-1-79fa4e065574@linaro.org
Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>

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Dmitry Baryshkov 2024-03-14 03:10:41 +02:00 • committed by Abhinav Kumar

parent c588f7d670

commit 4f3b77ae5f

1 changed files with 5 additions and 5 deletions

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drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c

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