From: Henry Martin Date: Wed, 2 Apr 2025 02:39:00 +0000 (+0800) Subject: dmaengine: ti: Add NULL check in udma_probe() X-Git-Tag: v5.10.239~267 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=ec1ea394c40523835bbedd8fc4934b77b461b6fe;p=thirdparty%2Fkernel%2Fstable.git dmaengine: ti: Add NULL check in udma_probe() [ Upstream commit fd447415e74bccd7362f760d4ea727f8e1ebfe91 ] devm_kasprintf() returns NULL when memory allocation fails. Currently, udma_probe() does not check for this case, which results in a NULL pointer dereference. Add NULL check after devm_kasprintf() to prevent this issue. Fixes: 25dcb5dd7b7c ("dmaengine: ti: New driver for K3 UDMA") Signed-off-by: Henry Martin Reviewed-by: Nathan Lynch Acked-by: Peter Ujfalusi Link: https://lore.kernel.org/r/20250402023900.43440-1-bsdhenrymartin@gmail.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index 1f01bd483c6ba..cade321095d20 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -3672,7 +3672,8 @@ 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 */ tasklet_setup(&uc->vc.task, udma_vchan_complete);