From: Riyan Dhiman <riyandhiman14@xxxxxxxxx> [ Upstream commit a8a8b54350229f59c8ba6496fb5689a1632a59be ] The geoid is a module parameter that allows users to hardcode the slot number. A bound check for geoid was added in the probe function because only values between 0 and less than VME_MAX_SLOT are valid. Signed-off-by: Riyan Dhiman <riyandhiman14@xxxxxxxxx> Reviewed-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Link: https://lore.kernel.org/r/20240827125604.42771-2-riyandhiman14@xxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/staging/vme_user/vme_fake.c | 6 ++++++ drivers/staging/vme_user/vme_tsi148.c | 6 ++++++ 2 files changed, 12 insertions(+) diff --git a/drivers/staging/vme_user/vme_fake.c b/drivers/staging/vme_user/vme_fake.c index 7c53a8a7b79b8..95730d1270af8 100644 --- a/drivers/staging/vme_user/vme_fake.c +++ b/drivers/staging/vme_user/vme_fake.c @@ -1064,6 +1064,12 @@ static int __init fake_init(void) struct vme_slave_resource *slave_image; struct vme_lm_resource *lm; + if (geoid < 0 || geoid >= VME_MAX_SLOTS) { + pr_err("VME geographical address must be between 0 and %d (exclusive), but got %d\n", + VME_MAX_SLOTS, geoid); + return -EINVAL; + } + /* We need a fake parent device */ vme_root = root_device_register("vme"); if (IS_ERR(vme_root)) diff --git a/drivers/staging/vme_user/vme_tsi148.c b/drivers/staging/vme_user/vme_tsi148.c index 2f5eafd509340..4566e391d913f 100644 --- a/drivers/staging/vme_user/vme_tsi148.c +++ b/drivers/staging/vme_user/vme_tsi148.c @@ -2252,6 +2252,12 @@ static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id) struct vme_dma_resource *dma_ctrlr; struct vme_lm_resource *lm; + if (geoid < 0 || geoid >= VME_MAX_SLOTS) { + dev_err(&pdev->dev, "VME geographical address must be between 0 and %d (exclusive), but got %d\n", + VME_MAX_SLOTS, geoid); + return -EINVAL; + } + /* If we want to support more than one of each bridge, we need to * dynamically generate this so we get one per device */ -- 2.43.0
