From e88db3bd46801a9c2cd0ac5e46122d47c285faec Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Mon, 9 Aug 2010 21:49:36 +0000 Subject: [PATCH] qlcnic: using too much stack qlcnic_pci_info structs are 128 bytes so an array of 8 uses 1024 bytes. That's a lot if you run with 4K stacks. I allocated them with kcalloc() instead. Signed-off-by: Dan Carpenter Signed-off-by: David S. Miller --- drivers/net/qlcnic/qlcnic_main.c | 27 +++++++++++++++++++++------ 1 file changed, 21 insertions(+), 6 deletions(-) diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c index 6b8df55840c0..bf6d87adda4f 100644 --- a/drivers/net/qlcnic/qlcnic_main.c +++ b/drivers/net/qlcnic/qlcnic_main.c @@ -473,14 +473,20 @@ qlcnic_cleanup_pci_map(struct qlcnic_adapter *adapter) static int qlcnic_init_pci_info(struct qlcnic_adapter *adapter) { - struct qlcnic_pci_info pci_info[QLCNIC_MAX_PCI_FUNC]; + struct qlcnic_pci_info *pci_info; int i, ret = 0, err; u8 pfn; + pci_info = kcalloc(QLCNIC_MAX_PCI_FUNC, sizeof(*pci_info), GFP_KERNEL); + if (!pci_info) + return -ENOMEM; + adapter->npars = kzalloc(sizeof(struct qlcnic_npar_info) * QLCNIC_MAX_PCI_FUNC, GFP_KERNEL); - if (!adapter->npars) - return -ENOMEM; + if (!adapter->npars) { + err = -ENOMEM; + goto err_pci_info; + } adapter->eswitch = kzalloc(sizeof(struct qlcnic_eswitch) * QLCNIC_NIU_MAX_XG_PORTS, GFP_KERNEL); @@ -508,6 +514,7 @@ qlcnic_init_pci_info(struct qlcnic_adapter *adapter) for (i = 0; i < QLCNIC_NIU_MAX_XG_PORTS; i++) adapter->eswitch[i].flags |= QLCNIC_SWITCH_ENABLE; + kfree(pci_info); return 0; err_eswitch: @@ -516,6 +523,8 @@ err_eswitch: err_npars: kfree(adapter->npars); adapter->npars = NULL; +err_pci_info: + kfree(pci_info); return ret; } @@ -3362,15 +3371,21 @@ qlcnic_sysfs_read_pci_config(struct file *file, struct kobject *kobj, struct device *dev = container_of(kobj, struct device, kobj); struct qlcnic_adapter *adapter = dev_get_drvdata(dev); struct qlcnic_pci_func_cfg pci_cfg[QLCNIC_MAX_PCI_FUNC]; - struct qlcnic_pci_info pci_info[QLCNIC_MAX_PCI_FUNC]; + struct qlcnic_pci_info *pci_info; int i, ret; if (size != sizeof(pci_cfg)) return QL_STATUS_INVALID_PARAM; + pci_info = kcalloc(QLCNIC_MAX_PCI_FUNC, sizeof(*pci_info), GFP_KERNEL); + if (!pci_info) + return -ENOMEM; + ret = qlcnic_get_pci_info(adapter, pci_info); - if (ret) + if (ret) { + kfree(pci_info); return ret; + } for (i = 0; i < QLCNIC_MAX_PCI_FUNC ; i++) { pci_cfg[i].pci_func = pci_info[i].id; @@ -3381,8 +3396,8 @@ qlcnic_sysfs_read_pci_config(struct file *file, struct kobject *kobj, memcpy(&pci_cfg[i].def_mac_addr, &pci_info[i].mac, ETH_ALEN); } memcpy(buf, &pci_cfg, size); + kfree(pci_info); return size; - } static struct bin_attribute bin_attr_npar_config = { .attr = {.name = "npar_config", .mode = (S_IRUGO | S_IWUSR)}, -- 2.20.1