From: Claudiu Beznea claudiu.beznea@microchip.com
[ Upstream commit af2e19d82a116bc622eea84c9faadd5f7e20bec4 ]
devm_kasprintf() returns a pointer to dynamically allocated memory. Pointer could be NULL in case allocation fails. Check pointer validity. Identified with coccinelle (kmerr.cocci script).
Fixes: 3abe3ab3cdab ("misc: fastrpc: add secure domain support") Signed-off-by: Claudiu Beznea claudiu.beznea@microchip.com Link: https://lore.kernel.org/r/20230615102546.581899-1-claudiu.beznea@microchip.c... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/misc/fastrpc.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c index 30d4d0476248f..9051551d99373 100644 --- a/drivers/misc/fastrpc.c +++ b/drivers/misc/fastrpc.c @@ -2225,6 +2225,9 @@ static int fastrpc_device_register(struct device *dev, struct fastrpc_channel_ct fdev->miscdev.fops = &fastrpc_fops; fdev->miscdev.name = devm_kasprintf(dev, GFP_KERNEL, "fastrpc-%s%s", domain, is_secured ? "-secure" : ""); + if (!fdev->miscdev.name) + return -ENOMEM; + err = misc_register(&fdev->miscdev); if (!err) { if (is_secured)