Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.15 423/667] soc: bcm: Check for NULL return of devm_kzalloc() | Date | Tue, 7 Jun 2022 19:01:28 +0200 |
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From: QintaoShen <unSimple1993@163.com>
[ Upstream commit b4bd2aafacce48db26b0a213d849818d940556dd ]
As the potential failure of allocation, devm_kzalloc() may return NULL. Then the 'pd->pmb' and the follow lines of code may bring null pointer dereference.
Therefore, it is better to check the return value of devm_kzalloc() to avoid this confusion.
Fixes: 8bcac4011ebe ("soc: bcm: add PM driver for Broadcom's PMB") Signed-off-by: QintaoShen <unSimple1993@163.com> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/soc/bcm/bcm63xx/bcm-pmb.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/soc/bcm/bcm63xx/bcm-pmb.c b/drivers/soc/bcm/bcm63xx/bcm-pmb.c index 774465c119be..2ac20084e5a5 100644 --- a/drivers/soc/bcm/bcm63xx/bcm-pmb.c +++ b/drivers/soc/bcm/bcm63xx/bcm-pmb.c @@ -314,6 +314,9 @@ static int bcm_pmb_probe(struct platform_device *pdev) for (e = table; e->name; e++) { struct bcm_pmb_pm_domain *pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL); + if (!pd) + return -ENOMEM; + pd->pmb = pmb; pd->data = e; pd->genpd.name = e->name; -- 2.35.1
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