[PATCH AUTOSEL 5.17 12/48] soc: ti: ti_sci_pm_domains: Check for null return of devm_kcalloc
From: Sasha Levin
Date: Wed Jun 01 2022 - 09:57:37 EST
From: QintaoShen <unSimple1993@xxxxxxx>
[ Upstream commit ba56291e297d28aa6eb82c5c1964fae2d7594746 ]
The allocation funciton devm_kcalloc may fail and return a null pointer,
which would cause a null-pointer dereference later.
It might be better to check it and directly return -ENOMEM just like the
usage of devm_kcalloc in previous code.
Signed-off-by: QintaoShen <unSimple1993@xxxxxxx>
Signed-off-by: Nishanth Menon <nm@xxxxxx>
Link: https://lore.kernel.org/r/1648107843-29077-1-git-send-email-unSimple1993@xxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/soc/ti/ti_sci_pm_domains.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/soc/ti/ti_sci_pm_domains.c b/drivers/soc/ti/ti_sci_pm_domains.c
index 8afb3f45d263..a33ec7eaf23d 100644
--- a/drivers/soc/ti/ti_sci_pm_domains.c
+++ b/drivers/soc/ti/ti_sci_pm_domains.c
@@ -183,6 +183,8 @@ static int ti_sci_pm_domain_probe(struct platform_device *pdev)
devm_kcalloc(dev, max_id + 1,
sizeof(*pd_provider->data.domains),
GFP_KERNEL);
+ if (!pd_provider->data.domains)
+ return -ENOMEM;
pd_provider->data.num_domains = max_id + 1;
pd_provider->data.xlate = ti_sci_pd_xlate;
--
2.35.1