devm_kasprintf() can return a NULL pointer on failure,but this
returned value udma_probe() is not checked.
Add NULL check in udma_probe(), to handle kernel NULL
pointer dereference error.
Fixes: 25dcb5dd7b7c ("dmaengine: ti: New driver for K3 UDMA")
Signed-off-by: Charles Han <hanchunchao@xxxxxxxxxx>
---
drivers/dma/ti/k3-udma.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
index b3f27b3f9209..e940753a8ab1 100644
--- a/drivers/dma/ti/k3-udma.c
+++ b/drivers/dma/ti/k3-udma.c
@@ -5566,6 +5566,8 @@ static int udma_probe(struct platform_device *pdev)
uc->config.dir = DMA_MEM_TO_MEM;
uc->name = devm_kasprintf(dev, GFP_KERNEL, "%s chan%d",
dev_name(dev), i);
+ if (!uc->name)
+ return -ENOMEM;
vchan_init(&uc->vc, &ud->ddev);
/* Use custom vchan completion handling */
--
2.31.1
