[lvc-project] [PATCH v2 1/2] drm/msm/a6xx: fix use-after-free of OPP in a6xx_pm_resume

[Konrad Dybcio]

On 9/29/26 4:20 PM, Roman Demidov wrote:
> The OPP reference obtained via dev_pm_opp_find_freq_ceil() is dropped
> with dev_pm_opp_put() before being passed to dev_pm_opp_set_opp(). If
> the reference count reaches zero, the OPP object may be freed, leading
> to a use-after-free when dev_pm_opp_set_opp() dereferences it.
> 
> Fix the order of calls: first use the OPP to set the required
> performance state, then release the reference.
> 
> Fixes: 5a903a44a984 ("drm/msm/a6xx: Introduce GMU wrapper support")
> Signed-off-by: Roman Demidov <roman.demidov.nn at gmail.com>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio at oss.qualcomm.com>

Konrad