| Message ID | 20200615211855.GA32663@embeddedor |
|---|---|
| State | Accepted |
| Delegated to: | David Miller |
| Headers | show |
| Series | liquidio: Replace vmalloc_node + memset with vzalloc_node and use array_size | expand |
From: "Gustavo A. R. Silva" <gustavoars@kernel.org> Date: Mon, 15 Jun 2020 16:18:55 -0500 > Use vzalloc/vzalloc_node instead of the vmalloc/vzalloc_node and memset. > > Also, notice that vzalloc_node() function has no 2-factor argument form > to calculate the size for the allocation, so multiplication factors need > to be wrapped in array_size(). > > This issue was found with the help of Coccinelle and, audited and fixed > manually. > > Addresses-KSPP-ID: https://github.com/KSPP/linux/issues/83 > Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Applied to net-next, thanks.
diff --git a/drivers/net/ethernet/cavium/liquidio/request_manager.c b/drivers/net/ethernet/cavium/liquidio/request_manager.c index 6dd65f9b347c..8e59c2825533 100644 --- a/drivers/net/ethernet/cavium/liquidio/request_manager.c +++ b/drivers/net/ethernet/cavium/liquidio/request_manager.c @@ -95,12 +95,10 @@ int octeon_init_instr_queue(struct octeon_device *oct, /* Initialize a list to holds requests that have been posted to Octeon * but has yet to be fetched by octeon */ - iq->request_list = vmalloc_node((sizeof(*iq->request_list) * num_descs), - numa_node); + iq->request_list = vzalloc_node(array_size(num_descs, sizeof(*iq->request_list)), + numa_node); if (!iq->request_list) - iq->request_list = - vmalloc(array_size(num_descs, - sizeof(*iq->request_list))); + iq->request_list = vzalloc(array_size(num_descs, sizeof(*iq->request_list))); if (!iq->request_list) { lio_dma_free(oct, q_size, iq->base_addr, iq->base_addr_dma); dev_err(&oct->pci_dev->dev, "Alloc failed for IQ[%d] nr free list\n", @@ -108,8 +106,6 @@ int octeon_init_instr_queue(struct octeon_device *oct, return 1; } - memset(iq->request_list, 0, sizeof(*iq->request_list) * num_descs); - dev_dbg(&oct->pci_dev->dev, "IQ[%d]: base: %p basedma: %pad count: %d\n", iq_no, iq->base_addr, &iq->base_addr_dma, iq->max_count);
Use vzalloc/vzalloc_node instead of the vmalloc/vzalloc_node and memset. Also, notice that vzalloc_node() function has no 2-factor argument form to calculate the size for the allocation, so multiplication factors need to be wrapped in array_size(). This issue was found with the help of Coccinelle and, audited and fixed manually. Addresses-KSPP-ID: https://github.com/KSPP/linux/issues/83 Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> --- drivers/net/ethernet/cavium/liquidio/request_manager.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-)