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[ Upstream commit83d18e9d9c] adreno_show_object() is a trap! It will re-allocate the pointer it is passed on first call, when the data is ascii85 encoded, using kvmalloc/ kvfree(). Which means the data *passed* to it must be kvmalloc'd, ie. we cannot use the state_kcalloc() helper. This partially reverts commitec8f1813bf("drm/msm/a6xx: Replace kcalloc() with kvzalloc()"), but adds the missing kvfree() to fix the memory leak that was present previously. And adds a warning comment. Fixes:ec8f1813bf("drm/msm/a6xx: Replace kcalloc() with kvzalloc()") Closes: https://gitlab.freedesktop.org/drm/msm/-/issues/20 Signed-off-by: Rob Clark <robdclark@chromium.org> Reviewed-by: Chia-I Wu <olvaffe@gmail.com> Reviewed-by: Akhil P Oommen <quic_akhilpo@quicinc.com> Patchwork: https://patchwork.freedesktop.org/patch/507014/ Link: https://lore.kernel.org/r/20221013225520.371226-2-robdclark@gmail.com Signed-off-by: Sasha Levin <sashal@kernel.org>