| Message ID | e8017bbe72a9cd7f663fb42ada5eb1e174b807bd.1628716867.git.christophe.jaillet@wanadoo.fr (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | media: venus: core: Fix a potential NULL pointer dereference in an error handling path | expand |
Le 12/08/2021 à 07:14, Christophe JAILLET a écrit : > The normal path of the function makes the assumption that > 'pm_ops->core_power' may be NULL. > We should make the same assumption in the error handling path or a NULL > pointer dereference may occur. > > Add the missing test before calling 'pm_ops->core_power' > > Fixes: 9e8efdb57879 ("media: venus: core: vote for video-mem path") > Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> > --- > drivers/media/platform/qcom/venus/core.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c > index 91b15842c555..84cd92628cfd 100644 > --- a/drivers/media/platform/qcom/venus/core.c > +++ b/drivers/media/platform/qcom/venus/core.c > @@ -472,7 +472,8 @@ static __maybe_unused int venus_runtime_suspend(struct device *dev) > err_video_path: > icc_set_bw(core->cpucfg_path, kbps_to_icc(1000), 0); > err_cpucfg_path: > - pm_ops->core_power(core, POWER_ON); > + if (pm_ops->core_power) > + pm_ops->core_power(core, POWER_ON); > > return ret; > } > Hi, this was sent duing the summer holidays. Since then, a few other patches have been merged in linux-next for this file. So, this is a polite reminder. CJ
diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c index 91b15842c555..84cd92628cfd 100644 --- a/drivers/media/platform/qcom/venus/core.c +++ b/drivers/media/platform/qcom/venus/core.c @@ -472,7 +472,8 @@ static __maybe_unused int venus_runtime_suspend(struct device *dev) err_video_path: icc_set_bw(core->cpucfg_path, kbps_to_icc(1000), 0); err_cpucfg_path: - pm_ops->core_power(core, POWER_ON); + if (pm_ops->core_power) + pm_ops->core_power(core, POWER_ON); return ret; }
The normal path of the function makes the assumption that 'pm_ops->core_power' may be NULL. We should make the same assumption in the error handling path or a NULL pointer dereference may occur. Add the missing test before calling 'pm_ops->core_power' Fixes: 9e8efdb57879 ("media: venus: core: vote for video-mem path") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> --- drivers/media/platform/qcom/venus/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)