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misc: fastrpc: check return value of devm_kasprintf()

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[ 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: 3abe3ab3cd ("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.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Claudiu Beznea 2023-06-15 13:25:46 +03:00 • committed by Greg Kroah-Hartman
parent 7e3ee25e8c
commit 94f3bcfcd1
1 changed files with 3 additions and 0 deletions
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3
drivers/misc/fastrpc.c
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@ -2030,6 +2030,9 @@ static int fastrpc_device_register(struct device *dev, struct fastrpc_channel_ct
fdev->miscdev.fops = &fastrpc_fops; fdev->miscdev.fops = &fastrpc_fops;
fdev->miscdev.name = devm_kasprintf(dev, GFP_KERNEL, "fastrpc-%s%s", fdev->miscdev.name = devm_kasprintf(dev, GFP_KERNEL, "fastrpc-%s%s",
domain, is_secured ? "-secure" : ""); domain, is_secured ? "-secure" : "");
if (!fdev->miscdev.name)
return -ENOMEM;
err = misc_register(&fdev->miscdev); err = misc_register(&fdev->miscdev);
if (!err) { if (!err) {
if (is_secured) if (is_secured)